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Al-Shawwa A, Ost K, Anderson D, Cho N, Evaniew N, Jacobs WB, Martin AR, Gaekwad R, Tripathy S, Bouchard J, Casha S, Cho R, duPlessis S, Lewkonia P, Nicholls F, Salo PT, Soroceanu A, Swamy G, Thomas KC, Yang MMH, Cohen-Adad J, Cadotte DW. Advanced MRI metrics improve the prediction of baseline disease severity for individuals with degenerative cervical myelopathy. Spine J 2024:S1529-9430(24)00193-1. [PMID: 38679077 DOI: 10.1016/j.spinee.2024.04.028] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 04/05/2024] [Accepted: 04/23/2024] [Indexed: 05/01/2024]
Abstract
BACKGROUND CONTEXT Degenerative cervical myelopathy (DCM) is the most common form of atraumatic spinal cord injury globally. Degeneration of spinal discs, bony osteophyte growth and ligament pathology results in physical compression of the spinal cord contributing to damage of white matter tracts and grey matter cellular populations. This results in an insidious neurological and functional decline in patients which can lead to paralysis. Magnetic resonance imaging (MRI) confirms the diagnosis of DCM and is a prerequisite to surgical intervention, the only known treatment for this disorder. Unfortunately, there is a weak correlation between features of current commonly acquired MRI scans ("community MRI, cMRI") and the degree of disability experienced by a patient. PURPOSE This study examines the predictive ability of current MRI sequences relative to "advanced MRI" (aMRI) metrics designed to detect evidence of spinal cord injury secondary to degenerative myelopathy. We hypothesize that the utilization of higher fidelity aMRI scans will increase the effectiveness of machine learning models predicting DCM severity and may ultimately lead to a more efficient protocol for identifying patients in need of surgical intervention. STUDY DESIGN/SETTING Single institution analysis of imaging registry of patients with DCM. PATIENT SAMPLE 296 patients in the cMRI group and 228 patients in the aMRI group. OUTCOME MEASURES Physiologic measures: Accuracy of machine learning algorithms to detect severity of DCM assessed clinically based on the modified Japanese Orthopedic Association (mJOA) scale. METHODS Patients enrolled in the Canadian Spine Outcomes Research Network registry with DCM were screened and 296 cervical spine MRIs acquired in cMRI were compared with 228 aMRI acquisitions. aMRI acquisitions consisted of diffusion tensor imaging, magnetization transfer, T2-weighted, and T2*-weighted images. The cMRI group consisted of only T2-weighted MRI scans. Various machine learning models were applied to both MRI groups to assess accuracy of prediction of baseline disease severity assessed clinically using the mJOA scale for cervical myelopathy. RESULTS Through the utilization of Random Forest Classifiers, disease severity was predicted with 41.8% accuracy in cMRI scans and 73.3% in the aMRI scans. Across different predictive model variations tested, the aMRI scans consistently produced higher prediction accuracies compared to the cMRI counterparts. CONCLUSIONS aMRI metrics perform better in machine learning models at predicting disease severity of patients with DCM. Continued work is needed to refine these models and address DCM severity class imbalance concerns, ultimately improving model confidence for clinical implementation.
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Affiliation(s)
- Abdul Al-Shawwa
- Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Kalum Ost
- Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - David Anderson
- Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Newton Cho
- Department of Neurosurgery, University of Toronto, Toronto, ON, Canada
| | - Nathan Evaniew
- Combined Orthopedic and Neurosurgery Spine Program, University of Calgary, Calgary, AB, Canada; Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - W Bradley Jacobs
- Combined Orthopedic and Neurosurgery Spine Program, University of Calgary, Calgary, AB, Canada; Department of Clinical Neurosciences, Section of Neurosurgery, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Allan R Martin
- Department of Neurological Surgery, University of California - Davis, Sacramento, CA
| | - Ranjeet Gaekwad
- Department of Clinical Neurosciences, Section of Neurosurgery, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Saswati Tripathy
- Combined Orthopedic and Neurosurgery Spine Program, University of Calgary, Calgary, AB, Canada
| | - Jacques Bouchard
- Combined Orthopedic and Neurosurgery Spine Program, University of Calgary, Calgary, AB, Canada; Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - Steven Casha
- Combined Orthopedic and Neurosurgery Spine Program, University of Calgary, Calgary, AB, Canada; Department of Clinical Neurosciences, Section of Neurosurgery, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Roger Cho
- Combined Orthopedic and Neurosurgery Spine Program, University of Calgary, Calgary, AB, Canada; Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - Stephen duPlessis
- Combined Orthopedic and Neurosurgery Spine Program, University of Calgary, Calgary, AB, Canada; Department of Clinical Neurosciences, Section of Neurosurgery, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Peter Lewkonia
- Combined Orthopedic and Neurosurgery Spine Program, University of Calgary, Calgary, AB, Canada; Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - Fred Nicholls
- Combined Orthopedic and Neurosurgery Spine Program, University of Calgary, Calgary, AB, Canada; Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - Paul T Salo
- Combined Orthopedic and Neurosurgery Spine Program, University of Calgary, Calgary, AB, Canada; Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - Alex Soroceanu
- Combined Orthopedic and Neurosurgery Spine Program, University of Calgary, Calgary, AB, Canada; Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - Ganesh Swamy
- Combined Orthopedic and Neurosurgery Spine Program, University of Calgary, Calgary, AB, Canada; Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - Kenneth C Thomas
- Combined Orthopedic and Neurosurgery Spine Program, University of Calgary, Calgary, AB, Canada; Section of Orthopaedic Surgery, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - Michael M H Yang
- Combined Orthopedic and Neurosurgery Spine Program, University of Calgary, Calgary, AB, Canada; Department of Clinical Neurosciences, Section of Neurosurgery, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada
| | - Julien Cohen-Adad
- NeuroPoly Lab, Institute of Biomedical Engineering, Polytechnique Montreal, Montreal, QC, Canada; Functional Neuroimaging Unit, CRIUGM, Université de Montréal, Montreal, QC, Canada; Mila - Quebec AI Institute, Montrèal, QC, Canada
| | - David W Cadotte
- Hotchkiss Brain Institute, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Combined Orthopedic and Neurosurgery Spine Program, University of Calgary, Calgary, AB, Canada; Department of Biochemistry and Molecular Biology, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada; Department of Clinical Neurosciences, Section of Neurosurgery, Cumming School of Medicine, University of Calgary, Calgary, AB, Canada.
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Aldahamsheh O, Alhammoud A, Halayqeh S, Jacobs WB, Thomas KC, Nicholls F, Evaniew N. Stand-Alone Anchored Spacer vs Anterior Plate Construct in the Management of Adjacent Segment Disease after Anterior Cervical Discectomy and Fusion: A Systematic Review and Meta-Analysis of Comparative Studies. Global Spine J 2024; 14:1038-1051. [PMID: 37705344 DOI: 10.1177/21925682231201787] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 09/15/2023] Open
Abstract
STUDY DESIGN Systematic Review and Meta-Analysis. OBJECTIVES This study aimed to evaluate the clinical and radiological outcomes of surgically treated adjacent segment disease (ASDis) following ACDF with either anterior plate construct (APC) or stand-alone anchored spacers (SAAS). METHOD Multiple databases were searched until December 2022 for pertinent studies. The primary outcome was health-related quality of life outcomes [JOA, NDI, and VAS], whereas, the secondary outcomes included operative characteristics [estimated blood loss (EBL) and operative time (OT)], radiological outcomes [C2-C7 Cobb angle, disc height index (DHI) changes, fusion rate], and complications. RESULTS A total of 5 studies were included, comprising 210 patients who had been surgically treated for cervical ASDis. Among them, 113 received APC, and 97 received SAAS. Postoperative dysphagia was significantly higher in the APC group [47% vs 11%, OR = 7.7, 95% CI = 3.1-18.9, P < .05]. Similarly, operative time and blood loss were higher in the APC group compared to the SAAS group; [MD = 16.96, 95% CI = 7.87-26.06, P < .05] and [MD = 5.22, 95% CI = .35 - 10.09, P < .05], respectively. However, there was no difference in the rate of prolonged dysphagia and clinical outcomes in terms of JOA, NDI, and VAS. Furthermore, there was no difference in the radiological parameters including the C2-7 Cobb angle and DHI as well as the fusion rate. CONCLUSION Our meta-analysis demonstrated that both surgical techniques (APC and SAAS) are effective in treating ASDis. However, with low certainty of the evidence, considering patients are at high risk of dysphagia following revision cervical spine surgery SAAS may be the preferred choice.
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Affiliation(s)
- Osama Aldahamsheh
- Division of Orthopedic Surgery Spine Program, Department of Surgery, University of Calgary, Calgary, AB, Canada
- Department of Special Surgery, Orthopedic Surgery, Faculty of Medicine, Al- Balqa' Applied University, Al-Salt, Jordan
| | - Abduljabbar Alhammoud
- Department of Orthopaedic Surgery, University of Arizona College of Medicine, Tucson, AZ, USA
| | | | - W Bradley Jacobs
- Division of Orthopedic Surgery Spine Program, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - Kenneth C Thomas
- Division of Orthopedic Surgery Spine Program, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - Fred Nicholls
- Division of Orthopedic Surgery Spine Program, Department of Surgery, University of Calgary, Calgary, AB, Canada
| | - Nathan Evaniew
- Division of Orthopedic Surgery Spine Program, Department of Surgery, University of Calgary, Calgary, AB, Canada
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Singh V, Oppermann M, Evaniew N, Soroceanu A, Nicholls F, Jacobs WB, Thomas K, Swamy G. Lateral Lumbar Interbody Fusion With rhBMP-2 can Achieve High Fusion Rates in Adult Spine Deformity Surgeries. Global Spine J 2024; 14:244-256. [PMID: 35586905 PMCID: PMC10676168 DOI: 10.1177/21925682221103512] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
STUDY DESIGN An ambispective, observational study of the prospective, institutional adult spine deformity (ASD) database. OBJECTIVES The study investigates the clinical and radiographic fusion rates with lateral interbody approach and rhBMP-2 in multiple-level lumbar fusion in the ASD population. Previous studies have reported over 10% pseudoarthrosis rate with multiple segment fusions. Lateral lumbar interbody fusion (LLIF) allows multiple-level, less-invasive access to the anterior lumbar spine. We hypothesized that fusion rates with lateral approach with rhBMP-2 use are superior to the published data on lumbar fusion in ASD patients. METHODS The institutional ASD database was searched to identify eligible patients with two or more levels of LLIF (T12-L5), >4 levels of posterior instrumentations and >2 years of follow-up between the years 2010 and 2018. Antero-posterior and lateral 36-inch standing radiographs for each patient and computed tomography scans in select patients were studied to ascertain fusion status and patients were divided into two groups based on fusion status. RESULTS The study included 179 patients with a mean age of 65.3 years and 74% female patients. The median number of interbody fusions was performed at 3 (IQR 3-4) levels. The mean follow-up duration was 4.4 years (SD = 1.9). 169 patients (94.5%) had successful arthrodesis, while 10 patients (5.5%) had radiological pseudoarthrosis at one level. Of the 10 patients, 8 (4.4%) were either clinically asymptomatic or had manageable back pain. Two patients (1.1%) required revision surgery for symptomatic pseudoarthrosis. CONCLUSION This is the largest known series of ASD patients investigating the fusion rates with multiple-level LLIFs. LLIF along with rhBMP-2 can achieve high fusion success across interbody fusion levels in multi-segmental ASD surgeries.
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Affiliation(s)
- Vishwajeet Singh
- Division of Orthopedic Surgery Spine Program, Department of Surgery, University of Calgary, Calgary, Alberta, Canada
| | - Marcelo Oppermann
- Division of Orthopedic Surgery Spine Program, Department of Surgery, University of Alberta, Edmonton, Alberta, Canada
| | - Nathan Evaniew
- Division of Orthopedic Surgery Spine Program, Department of Surgery, University of Calgary, Calgary, Alberta, Canada
| | - Alex Soroceanu
- Division of Orthopedic Surgery Spine Program, Department of Surgery, University of Calgary, Calgary, Alberta, Canada
| | - Fred Nicholls
- Division of Orthopedic Surgery Spine Program, Department of Surgery, University of Calgary, Calgary, Alberta, Canada
| | - W. Bradley Jacobs
- Division of Neurosurgery Spine Program, Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada
| | - Ken Thomas
- Division of Orthopedic Surgery Spine Program, Department of Surgery, University of Calgary, Calgary, Alberta, Canada
| | - Ganesh Swamy
- Division of Orthopedic Surgery Spine Program, Department of Surgery, University of Calgary, Calgary, Alberta, Canada
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Birk M, Sidhu K, Filezio MR, Singh V, Ferri-de-Barros F, Chan V, Shumilak G, Nataraj A, Langston H, Yee NJ, Iorio C, Shkumat N, Rocos B, Ertl-Wagner B, Lebel D, Camp MW, Dimentberg E, Saran N, Laflamme M, Ouellet JA, Wenghofer J, Livock H, Beaton L, Tice A, Smit K, Graham R, Duarte MP, Roy-Beaudry M, Turgeon I, Joncas J, Mac-Thiong JM, Labelle H, Barchi S, Parent S, Gholamian T, Livock H, Tice A, Smit K, Yoon S, Zulfiqar A, Rocos B, Murphy A, Bath N, Moll S, Sorbara J, Lebel D, Camp MW, Nallet JA, Rocos B, Lebel DE, Zeller R, Dermott JA, Kim DJ, Anthony A, Zeller R, Lebel DE, Wang Z, Shen J, Kamel Y, Liu J, Shedid D, Al-Shakfa F, Yuh SJ, Boubez G, Rizkallah M, Rizkallah M, Shen J, Boubez G, Kamel Y, Liu J, Shedid D, Al-Shakfa F, Lavoie F, Yug SJ, Wang Z, Alavi F, Nielsen C, Rampersaud R, Lewis S, Cheung AM, Cadieux C, Fernandes R, Brzozowski P, Zdero R, Bailey C, Rasoulinejad P, Cherry A, Manoharan R, Xu M, Srikandarajah N, Iorio C, Raj A, Nielsen C, Rampersaud R, Lewis S, Beange K, Graham R, Livock H, Smit K, Manoharan R, Cherry A, Srikandarajah N, Raj A, Xu M, Iorio C, Nielsen CJ, Rampersaud YR, Lewis SJ, Nasrabadi AAM, Moammer G, Phee JM, Walker T, Urquhart JC, Glennie RA, Rampersaud YR, Fisher CG, Bailey CS, Herrington BJ, Fernandes RR, Urquhart JC, Rasoulinejad P, Siddiqi F, Bailey CS, Urquhart J, Fernandes RR, Glennie RA, Rampersaud YR, Fisher CG, Bailey CS, Yang MMH, Riva-Cambrin J, Cunningham J, Casha S, Cadieux CN, Urquhart J, Fernandes R, Glennie A, Fisher C, Rampersaud R, Xu M, Manoharan R, Cherry A, Raj A, Srikandarajah N, Iorio C, Nielsen C, Lewis S, Rampersaud R, Cherry A, Raj A, McIntosh G, Manoharan R, Murray JC, Nielsen C, Xu M, Srikandarajah N, Iorio C, Perruccio A, Canizares M, Rampersaud R, El-Mughayyar D, Bigney E, Richardson E, Manson N, Abraham E, Attabib N, Small C, Kolyvas G, LeRoux A, Outcomes CS, Investigators RN, Hebert J, Baisamy V, Rizkallah M, Shen J, Cresson T, Vazquez C, Wang Z, Boubez G, Lung T, Canizares M, Perruccio A, Rampersaud R, Crawford EJ, Ravinsky RA, Perruccio AV, Rampersaud YR, Coyte PC, Bond M, Street J, Fisher C, Charest-Morin R, Sutherland JM, Bartolozzi AR, Barzilai O, Chou D, Laufer I, Verlaan JJ, Sahgal A, Rhines LD, Scuibba DM, Lazary A, Weber MH, Schuster JM, Boriani S, Bettegowda C, Arnold PM, Clarke MJ, Fehlings MG, Reynolds JJ, Gokaslan ZL, Fisher CG, Dea N, Versteeg AL, Charest-Morin R, Laufer I, Teixeira W, Barzilai O, Gasbarrini A, Fehlings MG, Chou D, Johnson MG, Gokaslan ZL, Dea N, Verlaan JJ, Goldschlager T, Shin JH, O'Toole JE, Sciubba DM, Bettegowda C, Clarke MJ, Weber MH, Mesfin A, Kawahara N, Goodwin R, Disch A, Lazary A, Boriani S, Sahgal A, Rhines L, Fisher CG, Versteeg AL, Gal R, Reich L, Tsang A, Aludino A, Sahgal A, Verlaan JJ, Fisher CG, Verkooijen L, Rizkallah M, Wang Z, Yuh SJ, Shedid D, Shen J, Al-Shakfa F, Belguendouz C, AlKafi R, Boubez G, MacLean MA, Georgiopoulos M, Charest-Morin R, Germscheid N, Goodwin CR, Weber M, International AS, Rizkallah M, Boubez G, Zhang H, Al-Shakfa F, Brindamour P, Boule D, Shen J, Shedid D, Yuh SJ, Wang Z, Correale MR, Soever LJ, Rampersaud R, Malic CC, Dubreuil M, Duke K, Kingwell SP, Lin Z, MacLean MA, Julien LC, Patriquin G, LeBlanc J, Green R, Alant J, Barry S, Glennie RA, Oxney W, Christie SD, Sarraj M, Alqahtani A, Thornley P, Koziarz F, Bailey CS, Freire-Archer M, Bhanot K, Kachur E, Bhandari M, Oitment C, Malhotra AK, Balas M, Jaja BNR, Harrington EM, Hofereiter J, Jaffe RH, He Y, Byrne JP, Wilson JR, Witiw CD, Brittain KCM, Christie S, Pillai S, Dvorak MF, Evaniew N, Chen M, Waheed Z, Rotem-Kohavi N, Fallah N, Noonan VK, Fisher CG, Charest-Morin R, Dea N, Ailon T, Street J, Kwon BK, Sandarage RV, Galuta A, Ghinda D, Kwan JCS, TsaI EC, Hachem LD, Hong J, Velumian A, Mothe AJ, Tator CH, Fehlings MG, Shakil H, Jaja BNR, Zhang P, Jaffe R, Malhotra AK, Wilson JR, Witiw CD, Rotem-Kohavi N, Dvorak MF, Dea N, Evaniew N, Chen M, Waheed Z, Xu J, Fallah N, Noonan V, Kwon B, Dandurand C, Muijs S, Dvorak M, Schnake K, Cumhur, Ouml Ner, Greene R, Furlong B, Smith-Forrester J, Swab M, Christie SD, Hall A, Leck E, Marshall E, Christie S, Dvorak MF, Cumhur F, Ouml Ner, Vaccaro AR, Benneker LM, Rajasekaran S, El-Sharkawi M, Popescu EC, Tee JW, Paquet J, France JC, Allen R, Lavelle WF, Hirschfeld M, Pneumaticos S, Dandurand C, Cumhur, Ouml Ner, Muijs S, Schnake K, Dvorak M, Fernandes RR, Thornley P, Urquhart J, Kelly S, Alenezi N, Alahmari A, Siddiqi F, Singh S, Rasoulinejad P, Bailey C, Evaniew N, Burger LD, Dea N, Cadotte DW, McIntosh G, Jacobs B, St-Laurent-Lebeux L, Bourassa-Moreau É, Sarraj M, Majeed M, Guha D, Pahuta M, Laflamme M, McIntosh G, Dea N, Bak AB, Alvi MA, Moghaddamjou A, Fehlings MG, Silva YGMD, Goulet J, McIntosh G, Bedard S, Pimenta N, Blanchard J, Couture J, LaRue B, Investigators C, Adams T, Cunningham E, El-Mughayyar D, Bigney E, Vandewint A, Manson N, Abraham E, Small C, Attabib N, Richardson E, Hebert J, Bond M, Street J, Fisher C, Charest-Morin R, Sutherland JM, Hillier T, Bailey CS, Fisher C, Rampersaud R, Koto P, Glennie RA, Soroceanu A, Nicholls F, Thomas K, Evaniew N, Lewkonia P, Bouchard J, Jacobs B, Ben-Israel D, Crawford EJ, Fisher C, Dea N, Spackman E, Rampersaud R, Thomas KC, Srikandarajah N, Murray JC, Nielsen C, Manoharan R, Cherry A, Raj A, Xu M, Iorio C, Bailey C, Dea N, Fisher C, Hall H, Manson N, Thomas K, Canizares M, Rampersaud YR, Urquhart J, Fernandes RR, Glennie RA, Rampersaud YR, Fisher CG, Bailey C, Yang MMH, Far R, Sajobi T, Riva-Cambrin J, Casha S, Bond M, Street J, Fisher C, Charest-Morin R, Sutherland JM, Silva Y, Pimenta NG, LaRue B, Bedard S, Oviedo SC, Goulet J, Couture J, Blanchard J, McDonald J, Al-Jahdali F, Urquhart J, Alahmari A, Rampersaud R, Fisher C, Bailey C, Glennie A, Evaniew N, Coyle M, Rampersaud YR, Bailey CS, Jacobs WB, Cadotte DW, Thomas KC, Attabib N, Paquet J, Nataraj A, Christie SD, Weber MH, Phan P, Charest-Morin R, Fisher CG, Hall H, McIntosh G, Dea N, Malhotra AK, Davis AM, He Y, Harrington EM, Jaja BNR, Zhu MP, Shakil H, Dea N, Jacobs WB, Cadotte DW, Paquet J, Weber MH, Phan P, Christie SD, Nataraj A, Bailey CS, Johnson MG, Fisher CG, Manson N, Rampersaud YR, Thomas KC, Hall H, Fehlings MG, Ahn H, Ginsberg HJ, Witiw CD, Wilson JR, Althagafi A, McIntosh G, Charest-Morin R, Rizzuto MA, Ailon T, Dea N, Evaniew N, Jacobs BW, Paquet J, Rampersaud R, Hall H, Bailey CS, Weber M, Johnson MG, Nataraj A, Attabib N, Cadotte DW, Manson N, Stratton A, Christie SD, Thomas KC, Wilson JR, Fisher CG, Charest-Morin R, Bak AB, Alvi MA, Moghaddamjou A, Fehlings MG, Bak AB, Alvi MA, Moghaddamjou A, Fehlings MG, Soroceanu A, Nicholls F, Thomas K, Evaniew N, Salo P, Bouchard J, Jacobs B, Dandurand C, Laghaei PF, Ailon T, Charest-Morin R, Dea N, Dvorak M, Fisher C, Kwon BK, Paquette S, Street J, Soroceanu A, Nicholls F, Thomas K, Evaniew N, Bouchard J, Salo P, Jacobs B, Varshney VP, Sahjpaul R, Paquette S, Osborn J, Bak AB, Moghaddamjou A, Fehlings MG, Leck E, Marshall E, Christie S, Elkaim LM, Lasry OJ, Raj A, Murray JC, Cherry A, McIntosh G, Nielsen C, Srikandarajah N, Manoharan R, Iorio C, Xu M, Perruccio A, Canizares M, Rampersaud YR, Stratton A, Tierney S, Wai EK, Phan P, Kingwell S, Magnan MC, Soroceanu A, Nicholls F, Thomas K, Evaniew N, Salo P, Bouchard J, Jacobs B, Spanninga B, Hoelen TCA, Johnson S, Arts JJC, Bailey CS, Urquhart JC, Glennie RA, Rampersaud YR, Fisher CG, Levett JJ, Elkaim LM, Alotaibi NM, Weber MH, Dea N, Abd-El-Barr MM, Cherry A, Yee A, Jaber N, Fehlings M, Cunningham E, Adams T, El-Mughayyar D, Bigney E, Vandewint A, Manson N, Abraham E, Small C, Attabib N, Richardson E, Hebert J, Werier J, Smit K, Villeneuve J, Sachs A, Abdelbary H, Al-Mosuli YK, Rakhra K, Phan P, Nagata K, Gum JL, Brown ME, Daniels CL, Carreon LY, Bonello JP, Koucheki R, Abbas A, Lex J, Nucci N, Whyne C, Larouche J, Ahn H, Finkelstein J, Lewis S, Toor J, Lee NJ, Orosz LD, Gum JL, Poulter GT, Jazini E, Haines CM, Good CR, Lehman RA, Crawford EJ, Ravinsky RA, Perruccio AV, Coyte PC, Rampersaud YR, Freire-Archer M, Sarraj M, AlShaalan F, Koziarz A, Thornley P, Alnemari H, Oitment C, Bharadwaj L, El-Mughayyar D, Bigney E, Manson N, Abraham E, Small C, Attabib N, Richardson E, Kearney J, Kundap U, Investigators C, Hebert J, Elkaim LM, Levett JJ, Niazi F, Bokhari R, Alotaibi NM, Lasry OJ, Bissonnette V, Yen D, Muddaluru VS, Gandhi P, Mastrolonardo A, Guha D, Pahuta MA, Christie SD, Vandertuin T, Ritcey G, Rainham D, Alhawsawi M, Mumtaz R, Abdelnour M, Qumquji F, Soroceanu A, Swamy G, Thomas K, Wai E, Phan P, Bhatt FR, Orosz LD, Yamout T, Good CR, Schuler TC, Nguyen T, Jazini E, Haines CM, Oppermann M, Gupta S, Ramjist J, Oppermann PS, Yang VXD, Levett JJ, Elkaim LM, Niazi F, Weber MH, Ioro-Morin C, Bonizzato M, Weil AG, Oppermann M, Ramjist J, Gupta S, Oppermann PS, Yang VXD, Jung Y, Muddalaru V, Gandhi P, Guha D, Koucheki R, Bonello JP, Abbas A, Lex JR, Nucci N, Whyne C, Yee A, Ahn H, Finkelstein J, Larouche J, Lewis S, Toor J, Dhawan A, Dhawan J, Sharma AN, Azzam DB, Cherry A, Fehlings MG, Orosz LD, Lee NJ, Yamout T, Gum JL, Lehman RA, Poulter GT, Haines CM, Jazini E, Good CR, Ridha BB, Persad A, Fourney D, Byers E, Gallagher M, Sugar J, Brown JL, Wang Z, Shen J, Boubez G, Al-Shakfa F, Yuh SJ, Shedid D, Rizkallah M, Singh M, Singh PK, Lawrence PL, Dell S, Goodluck-Tyndall R, Wade K, Morgan M, Bruce C, Silva YGMD, Pimenta N, LaRue B, Aldakhil S, Blanchard J, Couture J, Goulet J, Bednar DA, Raj R, Urquhart J, Bailey C, Christie SD, Greene R, Chaves JPG, Zarrabian M, Sigurdson L, Manoharan R, Cherry A, Iorio C, Srikandarajah N, Xu M, Raj A, Nielsen CJ, Rampersaud YR, Lewis SJ. Canadian Spine Society: 23rd Annual Scientific Conference, Wednesday, March 1 - Saturday, March 4, Fairmont Le Château Frontenac, Québec, Que., Canada. Can J Surg 2023; 66:S1-S53. [PMID: 37567613 DOI: 10.1503/cjs.006523] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 08/13/2023] Open
Affiliation(s)
| | | | | | | | | | - Vivien Chan
- Division of Neurosurgery, University of Alberta, Edmonton, Alta
- UCLA Health, Los Angeles, Calif
| | - Geoffrey Shumilak
- Division of Neurosurgery, University of Alberta, Edmonton, Alta
- Division of Neurosurgery, University of Saskatchewan, Saskatoon, Sask
| | - Andrew Nataraj
- Division of Neurosurgery, University of Alberta, Edmonton, Alta
| | | | - Nicholas J Yee
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Ont
- Hospital for Sick Children, Toronto, Ont
| | | | | | | | | | - David Lebel
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Ont
- Hospital for Sick Children, Toronto, Ont
| | - Mark W Camp
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Ont
- Hospital for Sick Children, Toronto, Ont
| | | | - Neil Saran
- Division of Orthopaedic Surgery, McGill University, Montréal, Que
| | | | - Jean A Ouellet
- Division of Orthopaedic Surgery, McGill University, Montréal, Que
| | | | - Holly Livock
- Children's Hospital of Eastern Ontario, Ottawa, Ont
| | - Luke Beaton
- Children's Hospital of Eastern Ontario, Ottawa, Ont
| | - Andrew Tice
- Children's Hospital of Eastern Ontario, Ottawa, Ont
| | - Kevin Smit
- Children's Hospital of Eastern Ontario, Ottawa, Ont
| | - Ryan Graham
- Health Science Department, University of Ottawa, Ottawa, Ont
| | - Matias Pereira Duarte
- Centre hospitalier universitaire Sainte-Justine, Montréal, Que
- Division of Orthopaedic Surgery, Université de Montréal, Montréal, Que
| | | | | | - Julie Joncas
- Centre hospitalier universitaire Sainte-Justine, Montréal, Que
| | - Jean-Marc Mac-Thiong
- Centre hospitalier universitaire Sainte-Justine, Montréal, Que
- Division of Orthopaedic Surgery, Université de Montréal, Montréal, Que
| | - Hubert Labelle
- Centre hospitalier universitaire Sainte-Justine, Montréal, Que
- Division of Orthopaedic Surgery, Université de Montréal, Montréal, Que
| | - Soraya Barchi
- Centre hospitalier universitaire Sainte-Justine, Montréal, Que
| | - Stefan Parent
- Centre hospitalier universitaire Sainte-Justine, Montréal, Que
- Division of Orthopaedic Surgery, Université de Montréal, Montréal, Que
| | - Tara Gholamian
- Faculty of Medicine, University of Ottawa, Ottawa, Ont
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ont
| | - Holly Livock
- Department of Orthopaedic Surgery, Children's Hospital of Eastern Ontario, Ottawa, Ont
| | - Andrew Tice
- Department of Orthopaedic Surgery, Children's Hospital of Eastern Ontario, Ottawa, Ont
| | - Kevin Smit
- Children's Hospital of Eastern Ontario Research Institute, Ottawa, Ont
- Department of Orthopaedic Surgery, Children's Hospital of Eastern Ontario, Ottawa, Ont
| | - Samuel Yoon
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Ont
- Hospital for Sick Children, Toronto, Ont
| | | | | | | | | | | | | | - David Lebel
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Ont
- Hospital for Sick Children, Toronto, Ont
| | - Mark W Camp
- Hospital for Sick Children, Toronto, Ont
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Ont
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Chloe Cadieux
- London Health Sciences Centre, London, Ont
- Department of Orthopaedic Surgery, Western University, London, Ont
| | - Renan Fernandes
- London Health Sciences Centre, London, Ont
- Department of Orthopaedic Surgery, Western University, London, Ont
| | | | - Radovan Zdero
- Department of Orthopaedic Surgery, Western University, London, Ont
| | - Chris Bailey
- London Health Sciences Centre, London, Ont
- Department of Orthopaedic Surgery, Western University, London, Ont
| | - Parham Rasoulinejad
- London Health Sciences Centre, London, Ont
- Department of Orthopaedic Surgery, Western University, London, Ont
| | | | | | | | | | | | | | | | | | | | - Kristen Beange
- Department of Systems and Computer Engineering, Carleton University, Ottawa, Ont
- Ottawa-Carleton Institute for Biomedical Engineering, Ottawa, Ont
| | - Ryan Graham
- Ottawa-Carleton Institute for Biomedical Engineering, Ottawa, Ont
- School of Human Kinetics, University of Ottawa, Ottawa, Ont
| | - Holly Livock
- Division of Orthopedic Surgery, Children's Hospital of Eastern Ontario, Ottawa, Ont
| | - Kevin Smit
- Division of Orthopedic Surgery, Children's Hospital of Eastern Ontario, Ottawa, Ont
| | | | | | | | | | | | | | | | | | | | | | - Gemah Moammer
- Grand River Hospital, Waterloo, Ont
- Department of Orthopaedic Surgery, McMaster University, Hamilton, Ont
| | - John Mc Phee
- Department of Systems Design Engineering, University of Waterloo, Waterloo, Ont
| | - Taryn Walker
- London Health Sciences Centre Combined Neurosurgical and Orthpaedic Spine Program, Schulich School of Medicine, Western University, London, Ont
| | - Jennifer C Urquhart
- London Health Sciences Centre Combined Neurosurgical and Orthpaedic Spine Program, Schulich School of Medicine, Western University, London, Ont
| | - R Andrew Glennie
- Departments of Orthopedics and Neurosurgery, Dalhousie University, Halifax, N.S
| | | | - Charles G Fisher
- Department of Surgery, University of British Columbia, Vancouver, B.C
| | - Chris S Bailey
- London Health Sciences Centre Combined Neurosurgical and Orthpaedic Spine Program, Schulich School of Medicine, Western University, London, Ont
| | - Brandon J Herrington
- London Health Sciences Centre combined Neurosurgical and Orthopaedic spine program, London, Ont
- Schulich School of Medicine and Dentistry, Department of Surgery, Western University, London, Ont
| | - Renan R Fernandes
- London Health Sciences Centre combined Neurosurgical and Orthopaedic spine program, London, Ont
- Schulich School of Medicine and Dentistry, Department of Surgery, Western University, London, Ont
| | - Jennifer C Urquhart
- London Health Sciences Centre combined Neurosurgical and Orthopaedic spine program, London, Ont
- Lawson Health Research Institute, London Health Sciences Centre, London, Ont
| | - Parham Rasoulinejad
- London Health Sciences Centre combined Neurosurgical and Orthopaedic spine program, London, Ont
- Schulich School of Medicine and Dentistry, Department of Surgery, Western University, London, Ont
- Lawson Health Research Institute, London Health Sciences Centre, London, Ont
| | - Fawaz Siddiqi
- London Health Sciences Centre combined Neurosurgical and Orthopaedic spine program, London, Ont
- Schulich School of Medicine and Dentistry, Department of Surgery, Western University, London, Ont
- Lawson Health Research Institute, London Health Sciences Centre, London, Ont
| | - Christopher S Bailey
- London Health Sciences Centre combined Neurosurgical and Orthopaedic spine program, London, Ont
- Schulich School of Medicine and Dentistry, Department of Surgery, Western University, London, Ont
- Lawson Health Research Institute, London Health Sciences Centre, London, Ont
| | - Jennifer Urquhart
- London Health Sciences Centre Combined Neurosurgical and Orthopaedic Spine Program, Schulich School of Medicine, Western University, London, Ont
| | - Renan R Fernandes
- London Health Sciences Centre Combined Neurosurgical and Orthopaedic Spine Program, Schulich School of Medicine, Western University, London, Ont
| | - R Andrew Glennie
- Departments of Orthopedics and Neurosurgery, Dalhousie University, Halifax, N.S
| | | | - Charles G Fisher
- Department of Surgery, University of British Columbia, Vancouver, B.C
| | - Chris S Bailey
- London Health Sciences Centre Combined Neurosurgical and Orthopaedic Spine Program, Schulich School of Medicine, Western University, London, Ont
| | - Michael M H Yang
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alta
- O'Brien Institute of Public Health, Calgary, Alta
| | - Jay Riva-Cambrin
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alta
| | | | - Steven Casha
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alta
| | - Chloe N Cadieux
- Division of Orthopaedic Surgery, Western University, London, Ont
| | | | - Renan Fernandes
- Division of Orthopaedic Surgery, Western University, London, Ont
| | - Andrew Glennie
- Department of Surgery, Dalhousie University, Halifax, N.S
| | - Charles Fisher
- Combined Neurosurgical and Orthopaedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Raja Rampersaud
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Ont
| | | | | | | | | | | | | | | | | | | | | | | | - Greg McIntosh
- Canadian Spine Outcomes and Research Network, Markdale, Ont
| | | | | | | | - Mark Xu
- Krembil Research Institute Arthritis Institute, Toronto, Ont
| | | | | | | | | | | | - Dana El-Mughayyar
- Canada East Spine Centre, Saint John, N.B
- Department of Kinesiology, University of New Brunswick, Fredericton, N.B
- Horizon Health Network, Saint John, N.B
- Dalhousie Medicine New Brunswick, Saint John, N.B
| | - Erin Bigney
- Canada East Spine Centre, Saint John, N.B
- Department of Kinesiology, University of New Brunswick, Fredericton, N.B
- Horizon Health Network, Saint John, N.B
| | - Eden Richardson
- Canada East Spine Centre, Saint John, N.B
- Canadian Spine Outcomes and Research Network, Markdale, Ont
| | - Neil Manson
- Canada East Spine Centre, Saint John, N.B
- Dalhousie Medicine New Brunswick, Saint John, N.B
- Saint John Orthopaedics, Saint John, N.B
| | - Edward Abraham
- Canada East Spine Centre, Saint John, N.B
- Dalhousie Medicine New Brunswick, Saint John, N.B
- Saint John Orthopaedics, Saint John, N.B
| | - Najmedden Attabib
- Canada East Spine Centre, Saint John, N.B
- Horizon Health Network, Saint John, N.B
- Dalhousie Medicine New Brunswick, Saint John, N.B
| | - Chris Small
- Canada East Spine Centre, Saint John, N.B
- Dalhousie Medicine New Brunswick, Saint John, N.B
- Saint John Orthopaedics, Saint John, N.B
| | - George Kolyvas
- Canada East Spine Centre, Saint John, N.B
- Horizon Health Network, Saint John, N.B
- Dalhousie Medicine New Brunswick, Saint John, N.B
| | - Andre LeRoux
- Canada East Spine Centre, Saint John, N.B
- Horizon Health Network, Saint John, N.B
- Dalhousie Medicine New Brunswick, Saint John, N.B
| | | | | | - Jeff Hebert
- Department of Kinesiology, University of New Brunswick, Fredericton, N.B
| | | | | | - Jesse Shen
- Centre hospitalier de l'Université de Montréal, Montréal, Que
| | | | | | - Zhi Wang
- Centre hospitalier de l'Université de Montréal, Montréal, Que
| | - Ghassan Boubez
- Centre hospitalier de l'Université de Montréal, Montréal, Que
| | - Tiffany Lung
- Division of Orthopaedic Surgery, Department of Surgery, Faculty of Medicine, University of Toronto, Toronto, Ont
| | - Mayilee Canizares
- Schroeder Arthritis Institute, Krembil Research Institute, University Health Network, Toronto, Ont
| | - Anthony Perruccio
- Schroeder Arthritis Institute, Krembil Research Institute, University Health Network, Toronto, Ont
| | - Raja Rampersaud
- Division of Orthopaedic Surgery, Department of Surgery, Faculty of Medicine, University of Toronto, Toronto, Ont
- Schroeder Arthritis Institute, Krembil Research Institute, University Health Network, Toronto, Ont
| | - Eric J Crawford
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont
| | - Robert A Ravinsky
- Department of Orthopaedics & Physical Medicine, Medical University of South Carolina, Charleston, S.C
| | - Anthony V Perruccio
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont
- Schroeder Arthritis Institute, University Health Network, Toronto, Ont
| | - Y Raja Rampersaud
- Schroeder Arthritis Institute, University Health Network, Toronto, Ont
- Division of Orthopaedic Surgery, Toronto Western Hospital, University Health Network & University of Toronto, Toronto, Ont
| | - Peter C Coyte
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont
| | - Michael Bond
- Centre for Health Services and Policy Research, University of British Columbia, Vancouver, B.C
| | - John Street
- Combined Neurosurgical and Orthopaedic Spine Program, Vancouver General Hospital, Vancouver, B.C
| | - Charles Fisher
- Combined Neurosurgical and Orthopaedic Spine Program, Vancouver General Hospital, Vancouver, B.C
| | - Raphaele Charest-Morin
- Combined Neurosurgical and Orthopaedic Spine Program, Vancouver General Hospital, Vancouver, B.C
| | - Jason M Sutherland
- Centre for Health Services and Policy Research, University of British Columbia, Vancouver, B.C
| | - Arthur R Bartolozzi
- Combined Neurological and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Ori Barzilai
- AO Spine Knowledge Forum Tumor, Davos, Graubünden, Switzerland
| | - Dean Chou
- AO Spine Knowledge Forum Tumor, Davos, Graubünden, Switzerland
| | - Ilya Laufer
- AO Spine Knowledge Forum Tumor, Davos, Graubünden, Switzerland
| | | | - Arjun Sahgal
- AO Spine Knowledge Forum Tumor, Davos, Graubünden, Switzerland
| | | | | | - Aron Lazary
- AO Spine Knowledge Forum Tumor, Davos, Graubünden, Switzerland
| | - Michael H Weber
- AO Spine Knowledge Forum Tumor, Davos, Graubünden, Switzerland
| | | | - Stefano Boriani
- AO Spine Knowledge Forum Tumor, Davos, Graubünden, Switzerland
| | | | - Paul M Arnold
- AO Spine Knowledge Forum Tumor, Davos, Graubünden, Switzerland
| | | | | | | | - Ziya L Gokaslan
- AO Spine Knowledge Forum Tumor, Davos, Graubünden, Switzerland
| | | | - Nicolas Dea
- Combined Neurological and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
- AO Foundation, Davos, Graubünden, Switzerland
| | | | - Raphaele Charest-Morin
- Spine Surgery Institute, Vancouver General Hospital, University of British Columbia, Vancouver, B.C
| | - Ilya Laufer
- Department of Neurosurgery, New York University Langone Health, New York, N.Y
| | - William Teixeira
- Department of Orthopedic, Spine Surgery Division, Instituto do Câncer do Estado de São Paulo, São Paulo, Brazil
| | - Ori Barzilai
- Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, N.Y
| | | | - Michael G Fehlings
- Division of Neurosurgery and Spine Program, Department of Surgery, University of Toronto, Toronto, Ont
| | - Dean Chou
- Department of Neurosurgery, Division of Spine Surgery, Columbia University Vagelos College of Physicians and Surgeons, New York, N.Y
| | | | - Ziya L Gokaslan
- Department of Neurosurgery, The Warren Alpert Medical School of Brown University, Providence, R.I
| | - Nicolas Dea
- Spine Surgery Institute, Vancouver General Hospital, University of British Columbia, Vancouver, B.C
| | | | - Tony Goldschlager
- Department of Neurosurgery, Monash Health, Melbourne, Victoria, Australia
| | - John H Shin
- Department of Neurosurgery, Massachusetts General Hospital, Harvard University, Boston, Mass
| | - John E O'Toole
- Department of Neurosurgery, Rush University, Chicago, Ill
| | - Daniel M Sciubba
- Department of Neurosurgery, Zucker School of Medicine at Hofstra, Long Island Jewish Medical Center and North Shore University Hospital, Northwell Health, Manhasset, N.Y
| | - Chetan Bettegowda
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, Md
| | | | - Michael H Weber
- Spine Surgery Program, Department of Surgery, Montréal General Hospital, McGill University Health Centre, Montréal, Que
| | - Addisu Mesfin
- Department of Orthopaedics, University of Rochester Medical Center, Rochester, N.Y
| | - Norio Kawahara
- Department of Orthopaedic Surgery, Kanazawa Medical University, Kahoku, Ishikawa, Japan
| | - Rory Goodwin
- Department of Neurosurgery, Spine Division, Duke University, Durham, N.C
| | - Alexander Disch
- Department of Orthopaedics, University Hospital Carl Gustav Carus at the TU Dresden, Dresden, Saxony, Germany
| | - Aron Lazary
- National Center for Spinal Disorders, Budapest, Hungary
| | | | - Arjun Sahgal
- Department of Radiation Oncology, University of Toronto, Sunnybrook Health Sciences Centre, Toronto, Ont
| | - Laurence Rhines
- Department of Neurosurgery, Division of Surgery, The University of Texas MD Anderson Cancer Centre, Houston, Tex
| | - Charles G Fisher
- Spine Surgery Institute, Vancouver General Hospital, University of British Columbia, Vancouver, B.C
| | - Anne L Versteeg
- Division of Surgery, Department of Orthopaedic Surgery, University of Toronto, Toronto, Ont
- Division of Imaging and Cancer, University Medical Center Utrecht, Utrecht, Netherlands
| | - Roxanne Gal
- Division of Imaging and Cancer, University Medical Center Utrecht, Utrecht, Netherlands
| | - Leilani Reich
- Division of Spine, Department of Orthopaedics, University of British Columbia and Vancouver General Hospital, Vancouver, B.C
| | - Angela Tsang
- Division of Spine, Department of Orthopaedics, University of British Columbia and Vancouver General Hospital, Vancouver, B.C
| | - Allan Aludino
- Division of Spine, Department of Orthopaedics, University of British Columbia and Vancouver General Hospital, Vancouver, B.C
| | - Arjun Sahgal
- Department of Radiation Oncology, University of Toronto, Sunnybrook Health Sciences Centre, Toronto, Ont
| | - Jorrit-Jan Verlaan
- Department of Orthopaedic Surgery, University Medical Center Utrecht, Utrecht, Netherlands
| | - Charles G Fisher
- Division of Spine, Department of Orthopaedics, University of British Columbia and Vancouver General Hospital, Vancouver, B.C
| | - Lenny Verkooijen
- Division of Imaging and Cancer, University Medical Center Utrecht, Utrecht, Netherlands
| | | | | | | | | | | | | | | | | | | | - Mark A MacLean
- Department of Surgery, Dalhousie University, Halifax, N.S
| | | | | | | | - C Rory Goodwin
- Duke University Medical Center, Duke University, Durham, N.C
| | - Michael Weber
- Combined Neurological and Orthopedic Spine Program, McGill University, Montréal, Que
| | | | | | | | | | | | | | | | | | | | | | | | - Marcia Rebecca Correale
- University Health Network, Toronto Western Hospital, Schroeder Arthritis Institute, Toronto, Ont
- Department of Physical Therapy, University of Toronto, Toronto, Ont
| | - Leslie Jayne Soever
- University Health Network, Toronto Western Hospital, Schroeder Arthritis Institute, Toronto, Ont
- Department of Physical Therapy, University of Toronto, Toronto, Ont
| | - Raja Rampersaud
- University Health Network, Toronto Western Hospital, Schroeder Arthritis Institute, Toronto, Ont
- Department of Surgery, University of Toronto, Toronto, Ont
- Krembil Research Institute, Toronto, Ont
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Mohamed Sarraj
- Division of Orthopaedic Surgery, McMaster University, Hamilton, Ont
| | | | - Patrick Thornley
- Division of Orthopaedic Surgery, Western University, London, Ont
| | - Frank Koziarz
- Division of Orthopaedic Surgery, McMaster University, Hamilton, Ont
| | | | | | | | - Edward Kachur
- Division of Orthopaedic Surgery, McMaster University, Hamilton, Ont
| | - Mohit Bhandari
- Division of Orthopaedic Surgery, McMaster University, Hamilton, Ont
| | - Colby Oitment
- Division of Orthopaedic Surgery, McMaster University, Hamilton, Ont
| | - Armaan K Malhotra
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, University of Toronto, Toronto, Ont
- Institute for Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont
| | - Michael Balas
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, University of Toronto, Toronto, Ont
| | - Blessing N R Jaja
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, University of Toronto, Toronto, Ont
| | - Erin M Harrington
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, University of Toronto, Toronto, Ont
| | - Johann Hofereiter
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, University of Toronto, Toronto, Ont
| | - Rachael H Jaffe
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, University of Toronto, Toronto, Ont
- Institute for Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont
| | - Yingshi He
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, University of Toronto, Toronto, Ont
| | - James P Byrne
- Department of Surgery, Johns Hopkins Hospital, Baltimore, Md
| | - Jefferson R Wilson
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, University of Toronto, Toronto, Ont
- Institute for Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont
| | - Christopher D Witiw
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, University of Toronto, Toronto, Ont
- Institute for Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont
| | | | | | | | - Marcel F Dvorak
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Nathan Evaniew
- Division of Orthopaedic Surgery, University of Calgary, Calgary, Alta
| | | | | | | | | | | | - Charles G Fisher
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Raphaële Charest-Morin
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Nicolas Dea
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Tamir Ailon
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | - John Street
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Brian K Kwon
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Ryan V Sandarage
- Neurosurgery Division, University of Ottawa, Ottawa, Ont
- The Ottawa Hospital, Ottawa, Ont
| | - Ahmad Galuta
- Neurosurgery Division, University of Ottawa, Ottawa, Ont
| | | | - Jason C S Kwan
- Neurosurgery Division, University of Ottawa, Ottawa, Ont
| | - Eve C TsaI
- Neurosurgery Division, University of Ottawa, Ottawa, Ont
- The Ottawa Hospital, Ottawa, Ont
| | - Laureen D Hachem
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ont
- Krembil Research Institute, University Health Network, Toronto, Ont
| | - James Hong
- Krembil Research Institute, University Health Network, Toronto, Ont
| | - Alexander Velumian
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ont
- Krembil Research Institute, University Health Network, Toronto, Ont
| | - Andrea J Mothe
- Krembil Research Institute, University Health Network, Toronto, Ont
| | - Charles H Tator
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ont
- Krembil Research Institute, University Health Network, Toronto, Ont
| | - Michael G Fehlings
- Division of Neurosurgery, Department of Surgery, University of Toronto, Toronto, Ont
- Krembil Research Institute, University Health Network, Toronto, Ont
| | - Husain Shakil
- Department of Surgery, Neurosurgery Division, University of Toronto, Toronto, Ont
- Unity Health Toronto, Toronto, Ont
| | | | | | - Rachael Jaffe
- Department of Surgery, Neurosurgery Division, University of Toronto, Toronto, Ont
- Unity Health Toronto, Toronto, Ont
| | - Armaan K Malhotra
- Department of Surgery, Neurosurgery Division, University of Toronto, Toronto, Ont
- Unity Health Toronto, Toronto, Ont
| | - Jefferson R Wilson
- Department of Surgery, Neurosurgery Division, University of Toronto, Toronto, Ont
- Unity Health Toronto, Toronto, Ont
| | - Christopher D Witiw
- Department of Surgery, Neurosurgery Division, University of Toronto, Toronto, Ont
- Unity Health Toronto, Toronto, Ont
| | | | - Marcel F Dvorak
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Nicolas Dea
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Nathan Evaniew
- Division of Orthopaedic Surgery, University of Calgary, Calgary, Alta
| | - Melody Chen
- Praxis Spinal Cord Institute, Vancouver, B.C
| | | | - Jijie Xu
- Praxis Spinal Cord Institute, Vancouver, B.C
| | | | | | - Brian Kwon
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Charlotte Dandurand
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Sander Muijs
- University Medical Center Utrecht, Utrecht, Netherlands
| | - Marcel Dvorak
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Klaus Schnake
- Malteser Waldkrankenhaus Erlangen, Erlangen, Bavaria, Germany
| | | | - Ouml Ner
- University Medical Center Utrecht, Utrecht, Netherlands
| | - Ryan Greene
- Division of Neurosurgery, Dalhousie University, Halifax, N.S
- Neurosurgery Division, Memorial University of Newfoundland, St. John's, N.L
| | - Bradley Furlong
- Neurosurgery Division, Memorial University of Newfoundland, St. John's, N.L
| | | | - Michelle Swab
- Neurosurgery Division, Memorial University of Newfoundland, St. John's, N.L
| | - Sean D Christie
- Division of Neurosurgery, Dalhousie University, Halifax, N.S
| | - Amanda Hall
- Neurosurgery Division, Memorial University of Newfoundland, St. John's, N.L
| | | | | | | | - Marcel F Dvorak
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | | | - Ouml Ner
- University Medical Centre Utrecht, Utrecht, Netherlands
| | | | | | | | | | | | - Jin Wee Tee
- Alfred Hospital, Melbourne, Victoria, Australia
| | | | - John C France
- Orthopedics, West Virginia University, Morgantown, W.V
| | - Richard Allen
- Department of Orthopaedic Surgery, University of California at San Diego, San Diego, Calif
| | | | | | | | - Charlotte Dandurand
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | | | - Ouml Ner
- University Medical Center Utrecht, Utrecht, Netherlands
| | - Sander Muijs
- University Medical Center Utrecht, Utrecht, Netherlands
| | - Klaus Schnake
- Malteser Waldkrankenhaus Erlangen, Erlangen, Bavaria, Germany
| | - Marcel Dvorak
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | | | | | | | | | | | | | | | | | | | | | | | | | - Nicolas Dea
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | | | - Greg McIntosh
- Canadian Spine Outcomes and Research Network, Markdale, Ont
| | | | | | | | | | | | | | | | - Mathieu Laflamme
- Centre hospitalier universitaire de Québec, Université Laval, Québec, Que
| | - Greg McIntosh
- Canadian Spine Outcomes and Research Network, Markdale, Ont
| | - Nicolas Dea
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | | | | | | | | | | | - Julien Goulet
- Orthopaedic Surgery Division, Université de Sherbrooke, Sherbrooke, Que
| | - Greg McIntosh
- Canadian Spine Outcomes and Research Network, Markdale, Ont
| | - Sonia Bedard
- Neurosurgery Division, Université de Sherbrooke, Sherbrooke, Que
| | - Newton Pimenta
- Neurosurgery Division, Université de Sherbrooke, Sherbrooke, Que
| | - Jocelyn Blanchard
- Orthopaedic Surgery Division, Université de Sherbrooke, Sherbrooke, Que
| | - Jerome Couture
- Orthopaedic Surgery Division, Université de Sherbrooke, Sherbrooke, Que
| | - Bernard LaRue
- Orthopaedic Surgery Division, Université de Sherbrooke, Sherbrooke, Que
| | | | - Tyler Adams
- Faculty of Medicine, University of New Brunswick, Fredericton, N.B
- Canada East Spine Centre, Saint John, N.B
| | - Erin Cunningham
- Faculty of Medicine, University of New Brunswick, Fredericton, N.B
- Canada East Spine Centre, Saint John, N.B
| | - Dana El-Mughayyar
- Faculty of Medicine, University of New Brunswick, Fredericton, N.B
- Canada East Spine Centre, Saint John, N.B
| | - Erin Bigney
- Faculty of Medicine, University of New Brunswick, Fredericton, N.B
- Canada East Spine Centre, Saint John, N.B
| | - Amanda Vandewint
- Canada East Spine Centre, Saint John, N.B
- Faculty of Medicine, Dalhousie University, Saint John, N.B
| | - Niel Manson
- Canada East Spine Centre, Saint John, N.B
- Faculty of Medicine, Dalhousie University, Saint John, N.B
- Horizon Health Network, Saint John, N.B
| | - Edward Abraham
- Canada East Spine Centre, Saint John, N.B
- Faculty of Medicine, Dalhousie University, Saint John, N.B
- Horizon Health Network, Saint John, N.B
| | - Chris Small
- Canada East Spine Centre, Saint John, N.B
- Faculty of Medicine, Dalhousie University, Saint John, N.B
- Horizon Health Network, Saint John, N.B
| | - Najmedden Attabib
- Canada East Spine Centre, Saint John, N.B
- Faculty of Medicine, Dalhousie University, Saint John, N.B
- Horizon Health Network, Saint John, N.B
| | - Eden Richardson
- Canada East Spine Centre, Saint John, N.B
- Horizon Health Network, Saint John, N.B
| | - Jeffery Hebert
- Faculty of Medicine, University of New Brunswick, Fredericton, N.B
| | - Michael Bond
- Centre for Health Services and Policy Research, University of British Columbia, Vancouver, B.C
| | - John Street
- Combined Neurosurgical and Orthopaedic Spine Program, Vancouver General Hospital, Vancouver, B.C
| | - Charles Fisher
- Combined Neurosurgical and Orthopaedic Spine Program, Vancouver General Hospital, Vancouver, B.C
| | - Raphaele Charest-Morin
- Combined Neurosurgical and Orthopaedic Spine Program, Vancouver General Hospital, Vancouver, B.C
| | - Jason M Sutherland
- Centre for Health Services and Policy Research, University of British Columbia, Vancouver, B.C
| | - Troy Hillier
- Faculty of Medicine, Dalhousie University, Halifax, N.S
| | - Chris S Bailey
- Orthopaedic Surgery Division, Western University, London, Ont
| | - Charles Fisher
- Combined Neurosurgical and Orthopedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Raja Rampersaud
- Orthopaedic Surgery Division, University of Toronto, Toronto, Ont
| | | | - R Andrew Glennie
- Orthopaedic Surgery Division, Dalhousie University, Halifax, N.S
| | | | | | | | | | | | | | | | - David Ben-Israel
- Department of Orthopaedic Surgery and Clinical Neurosciences, University of Calgary, Calgary, Alta
| | - Eric J Crawford
- Orthopaedic Surgery Division, University of Toronto, Toronto, Ont
| | - Charles Fisher
- Combined Neurosurgical and Orthopaedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Nicolas Dea
- Combined Neurosurgical and Orthopaedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Eldon Spackman
- Department of Orthopaedic Surgery and Clinical Neurosciences, University of Calgary, Calgary, Alta
| | - Raja Rampersaud
- Orthopaedic Surgery Division, University of Toronto, Toronto, Ont
| | - Kenneth C Thomas
- Department of Orthopaedic Surgery and Clinical Neurosciences, University of Calgary, Calgary, Alta
| | | | | | | | | | - Ahmed Cherry
- Toronto Western Hospital, University Health Network, Toronto, Ont
| | - Aditiya Raj
- Toronto Western Hospital, University Health Network, Toronto, Ont
| | - Mark Xu
- Toronto Western Hospital, University Health Network, Toronto, Ont
| | - Carlo Iorio
- Toronto Western Hospital, University Health Network, Toronto, Ont
| | - Chris Bailey
- London Health Sciences Centre, London, Ont
- Canadian Spine Outcomes and Research Network, Markdale, Ont
| | - Nicolas Dea
- Canadian Spine Outcomes and Research Network, Markdale, Ont
- Vancouver Spine Surgery Institute, Vancouver, B.C
| | - Charles Fisher
- Canadian Spine Outcomes and Research Network, Markdale, Ont
- Vancouver Spine Surgery Institute, Vancouver, B.C
| | - Hamilton Hall
- Canadian Spine Outcomes and Research Network, Markdale, Ont
- Sunnybrook Health Sciences Centre, Toronto, Ont
| | - Neil Manson
- Canada East Spine Centre, Saint John, N.B
- Horizon Health Network, Saint John, N.B
| | - Kenneth Thomas
- Canadian Spine Outcomes and Research Network, Markdale, Ont
- Department of Orthopaedic Surgery, University of Calgary, Calgary, Alta
| | - Mayilee Canizares
- Canadian Spine Outcomes and Research Network, Markdale, Ont
- Arthritis Program, Krembil Research Institute, University Health Network, Toronto, Ont
| | - Yoga Raja Rampersaud
- Toronto Western Hospital, University Health Network, Toronto, Ont
- Canadian Spine Outcomes and Research Network, Markdale, Ont
| | - Jennifer Urquhart
- London Health Sciences Centre Combined Neurosurgical and Orthopaedic Spine Program, Schulich School of Medicine, Western University, London, Ont
| | - Renan R Fernandes
- London Health Sciences Centre Combined Neurosurgical and Orthopaedic Spine Program, Schulich School of Medicine, Western University, London, Ont
| | - R Andrew Glennie
- Departments of Orthopedics and Neurosurgery, Dalhousie University, Halifax, N.S
| | | | - Charles G Fisher
- Department of Surgery, University of British Columbia, Vancouver, B.C
| | - Chris Bailey
- London Health Sciences Centre Combined Neurosurgical and Orthopaedic Spine Program, Schulich School of Medicine, Western University, London, Ont
| | - Michael M H Yang
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alta
- O'Brien Institute of Public Health, Calgary, Alta
| | - Rena Far
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alta
| | - Tolulope Sajobi
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alta
| | - Jay Riva-Cambrin
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alta
| | - Steven Casha
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alta
| | - Michael Bond
- Centre for Health Services and Policy Research, University of British Columbia, Vancouver, B.C
| | - John Street
- Combined Neurosurgical and Orthopaedic Spine Program, Vancouver General Hospital, Vancouver, B.C
| | - Charles Fisher
- Combined Neurosurgical and Orthopaedic Spine Program, Vancouver General Hospital, Vancouver, B.C
| | - Raphaele Charest-Morin
- Combined Neurosurgical and Orthopaedic Spine Program, Vancouver General Hospital, Vancouver, B.C
| | - Jason M Sutherland
- Centre for Health Services and Policy Research, University of British Columbia, Vancouver, B.C
| | | | | | | | | | | | | | | | | | - James McDonald
- Division of Orthopaedics, Department of Surgery, Memorial University of Newfoundland, St. John's, N.L
| | | | | | - Abdulmajeed Alahmari
- Division of Orthopaedics, Department of Surgery, Western University, London, Ont
| | - Raja Rampersaud
- Department of Orthopaedic Surgery, Toronto Western Hospital, Toronto, Ont
| | - Charles Fisher
- Combined Neurosurgical and Orthopaedic Spine Program, Vancouver General Hospital and the University of British Columbia, Vancouver, B.C
| | - Chris Bailey
- Division of Orthopaedics, Department of Surgery, Western University, London, Ont
| | - Andrew Glennie
- Division of Orthopedics, Dalhousie University, Halifax, N.S
| | - Nathan Evaniew
- Division of Orthopaedic Surgery, University of Calgary, Calgary, Alta
| | - Matthew Coyle
- Division of Orthopaedic Surgery, University of Calgary, Calgary, Alta
| | | | | | - W Bradley Jacobs
- Division of Orthopaedic Surgery, University of Calgary, Calgary, Alta
| | - David W Cadotte
- Division of Orthopaedic Surgery, University of Calgary, Calgary, Alta
| | - Kenneth C Thomas
- Division of Orthopaedic Surgery, University of Calgary, Calgary, Alta
| | | | - Jérôme Paquet
- Department of Surgery, Université de Québec, Québec, Que
| | - Andrew Nataraj
- Neurosurgery Division, University of Alberta, Edmonton, Alta
| | - Sean D Christie
- Division of Neurosurgery, Dalhousie University, Halifax, N.S
| | - Michael H Weber
- Orthopaedic Surgery Division, McGill University, Montréal, Que
| | - Philippe Phan
- Orthopaedic Surgery Division, University of Ottawa, Ottawa, Ont
| | - Raphaële Charest-Morin
- Combined Neurosurgical and Orthopaedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Charles G Fisher
- Combined Neurosurgical and Orthopaedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Hamilton Hall
- Department of Surgery, University of Toronto, Toronto, Ont
| | | | - Nicolas Dea
- Combined Neurosurgical and Orthopaedic Spine Program, University of British Columbia, Vancouver, B.C
| | - Armaan K Malhotra
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, Toronto, Ont
- Institute of Health Policy Management and Evaluation, University of Toronto, Toronto, Ont
| | - Aileen M Davis
- Institute of Health Policy Management and Evaluation, University of Toronto, Toronto, Ont
| | - Yingshi He
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, Toronto, Ont
| | - Erin M Harrington
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, Toronto, Ont
| | - Blessing N R Jaja
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, Toronto, Ont
| | - Mary P Zhu
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, Toronto, Ont
| | - Husain Shakil
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, Toronto, Ont
- Institute of Health Policy Management and Evaluation, University of Toronto, Toronto, Ont
| | - Nicolas Dea
- Combined Neurosurgical and Orthopedic Spine Program, Vancouver General Hospital, Vancouver, B.C
| | - W Bradley Jacobs
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alta
| | - David W Cadotte
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alta
| | - Jérôme Paquet
- Centre de recherche du Centre hospitalier universitaire (CHU) de Québec, CHU de Québec-Université Laval, Québec, Que
| | - Michael H Weber
- Division of Orthopedic Surgery, McGill University, Montréal, Que
| | | | - Sean D Christie
- Division of Neurosurgery, Dalhousie University, Halifax, N.S
| | - Andrew Nataraj
- Division of Neurosurgery, Department of Surgery, University of Alberta Hospital, Edmonton, Alta
| | - Christopher S Bailey
- Division of Orthopaedics, Western University, London Health Sciences Centre, London, Ont
| | - Michael G Johnson
- Department of Surgery, Section of Orthopaedics and Neurosurgery, University of Manitoba, Winnipeg, Man
| | - Charles G Fisher
- Combined Neurosurgical and Orthopedic Spine Program, Vancouver General Hospital, Vancouver, B.C
| | - Neil Manson
- Canada East Spine Centre, Saint John Orthopedics, Dalhousie University, Saint John, N.B
| | - Y Raja Rampersaud
- Division of Orthopaedic Surgery and Neurosurgery, Toronto Western Hospital, Toronto, Ont
| | - Kenneth C Thomas
- Department of Clinical Neurosciences, University of Calgary, Calgary, Alta
| | - Hamilton Hall
- Department of Surgery, University of Toronto, Toronto, Ont
| | - Michael G Fehlings
- Division of Orthopaedic Surgery and Neurosurgery, Toronto Western Hospital, Toronto, Ont
| | - Henry Ahn
- Division of Orthopedic Surgery, St Michael's Hospital, Toronto, Ont
| | - Howard J Ginsberg
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, Toronto, Ont
| | - Christopher D Witiw
- Division of Neurosurgery, Department of Surgery, St. Michael's Hospital, Toronto, Ont
- Institute of Health Policy Management and Evaluation, University of Toronto, Toronto, Ont
| | - Jefferson R Wilson
- Canada East Spine Centre, Saint John Orthopedics, Dalhousie University, Saint John, N.B
| | - Alwalaa Althagafi
- Combined Neurosurgical and Orthopedic Spine Program, Department of Orthopaedic Surgery, University of British Columbia, Vancouver, B.C
| | - Greg McIntosh
- Canadian Spine Outcomes and Research Network, Markdale, Ont
| | - Raphaële Charest-Morin
- Combined Neurosurgical and Orthopedic Spine Program, Department of Orthopaedic Surgery, University of British Columbia, Vancouver, B.C
| | - Michael A Rizzuto
- Combined Neurosurgical and Orthopedic Spine Program, Department of Orthopedic Surgery, University of British Columbia, Vancouver, B.C
| | - Tamir Ailon
- Combined Neurosurgical and Orthopedic Spine Program, Department of Orthopedic Surgery, University of British Columbia, Vancouver, B.C
| | - Nicolas Dea
- Combined Neurosurgical and Orthopedic Spine Program, Department of Orthopedic Surgery, University of British Columbia, Vancouver, B.C
| | - Nathan Evaniew
- Canadian Spine Outcomes and Research Network, Markdale, Ont
| | - Bradley W Jacobs
- Combined Neurosurgical and Orthopedic Spine Program, University of Calgary, Calgary, Alta
| | - Jerome Paquet
- Centre de recherche du Centre hospitalier universitaire (CHU) de Québec, CHU de Québec-Université Laval, Québec, Que
| | - Raja Rampersaud
- Divisions of Orthopaedics and Neurosurgery, University of Toronto, Toronto, Ont
| | - Hamilton Hall
- Department of Surgery, University of Toronto, Toronto, Ont
| | - Christopher S Bailey
- Department of Orthopedic Surgery, London Health Sciences Centre, Western University, London, Ont
| | - Michael Weber
- Department of Orthopedic Surgery, McGill University Health Centre, Montréal, Que
| | - Michael G Johnson
- Department of Surgery, Section of Orthopedics and Neurosurgery, University of Manitoba, Winnipeg, Man
| | - Andrew Nataraj
- Division of Neurosurgery, Department of Surgery, University of Alberta Hospital, Edmonton, Alta
| | - Najmedden Attabib
- Canada East Spine Centre, Division of Neurosurgery, Zone 2, Horizon Health Network, Saint John, N.B
| | - David W Cadotte
- Combined Neurosurgical and Orthopedic Spine Program, University of Calgary, Calgary, Alta
| | - Neil Manson
- Canada East Spine Centre, Saint John Orthopedics, Dalhousie Medicine New Brunswick, Saint John Campus, Saint John, N.B
| | | | - Sean D Christie
- Division of Neurosurgery, Dalhousie University, Halifax, N.S
| | - Kenneth C Thomas
- Divisions of Orthopaedics and Neurosurgery, University of Toronto, Toronto, Ont
| | | | - Charles G Fisher
- Combined Neurosurgical and Orthopedic Spine Program, Department of Orthopedic Surgery, University of British Columbia, Vancouver, B.C
| | - Raphaele Charest-Morin
- Combined Neurosurgical and Orthopedic Spine Program, Department of Orthopedic Surgery, University of British Columbia, Vancouver, B.C
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | - Vishal P Varshney
- Department of Anesthesia, Providence Healthcare, Vancouver, B.C
- Department of Anesthesiology, Pharmacology, Therapeutics, University of British Columbia, Vancouver, B.C
| | - Ramesh Sahjpaul
- Department of Anesthesia, Providence Healthcare, Vancouver, B.C
- Department of Anesthesiology, Pharmacology, Therapeutics, University of British Columbia, Vancouver, B.C
- Division of Neurosurgery, University of British Columbia, Vancouver, B.C
| | - Scott Paquette
- Department of Anesthesia, Providence Healthcare, Vancouver, B.C
- Department of Anesthesiology, Pharmacology, Therapeutics, University of British Columbia, Vancouver, B.C
- Division of Neurosurgery, University of British Columbia, Vancouver, B.C
| | - Jill Osborn
- Department of Anesthesia, Providence Healthcare, Vancouver, B.C
- Department of Anesthesiology, Pharmacology, Therapeutics, University of British Columbia, Vancouver, B.C
| | | | | | | | | | | | | | | | | | | | | | | | - Greg McIntosh
- Canadian Spine Outcomes and Research Network, Markdale, Ont
| | | | | | | | | | - Mark Xu
- University Health Network, Toronto, Ont
| | | | | | | | - Alexandra Stratton
- Orthopaedic Surgery Division, University of Ottawa, Ottawa, Ont
- Ottawa Hospital Research Institute, Ottawa, Ont
| | - Sarah Tierney
- Orthopaedic Surgery Division, University of Ottawa, Ottawa, Ont
- Ottawa Hospital Research Institute, Ottawa, Ont
| | - Eugene K Wai
- Orthopaedic Surgery Division, University of Ottawa, Ottawa, Ont
- Ottawa Hospital Research Institute, Ottawa, Ont
| | - Philippe Phan
- Orthopaedic Surgery Division, University of Ottawa, Ottawa, Ont
- Ottawa Hospital Research Institute, Ottawa, Ont
| | - Stephen Kingwell
- Orthopaedic Surgery Division, University of Ottawa, Ottawa, Ont
- Ottawa Hospital Research Institute, Ottawa, Ont
| | | | | | | | | | | | | | | | | | - Barend Spanninga
- Laboratory for Experimental Orthopaedics, Department of Orthopaedic Surgery, Maastricht University, Maastricht, Limburg, Netherlands
| | - Thomáy-Claire A Hoelen
- Department of Orthopaedic Surgery, Care and Public Health Research Institute, Maastricht University Medical Center, Maastricht, Limburg, Netherlands
| | | | - Jacobus J C Arts
- Department of Orthopaedic Surgery, Care and Public Health Research Institute, Maastricht University Medical Center, Maastricht, Limburg, Netherlands
- Orthopaedic Biomechanics, Department of Biomedical Engineering, Eindhoven University of Technology, Eindhoven, North Brabant, Netherlands
| | - Chris S Bailey
- London Health Sciences Centre Combined Neurosurgical and Orthopaedic Spine Program, Schulich School of Medicine, Western University, London, Ont
| | - Jennifer C Urquhart
- London Health Sciences Centre Combined Neurosurgical and Orthopaedic Spine Program, Schulich School of Medicine, Western University, London, Ont
| | - R Andrew Glennie
- Departments of Orthopedics and Neurosurgery, Dalhousie University, Halifax, N.S
| | | | - Charles G Fisher
- Department of Surgery, University of British Columbia, Vancouver, B.C
| | | | - Lior M Elkaim
- Department of Neurology and Neurosurgery, McGill University, Montréal, Que
| | - Naif M Alotaibi
- Department of Neurosurgery, National Neuroscience Institute, King Fahad Medical City, Riyadh, Saudi Arabia
| | - Michael H Weber
- Department of Orthopaedic Surgery, McGill University, Montréal, Que
| | - Nicolas Dea
- Combined Neurosurgical and Orthopedic Spine Program, Department of Orthopaedic Surgery, University of British Columbia, Vancouver, B.C
| | | | | | - Albert Yee
- Sunnybrook Health Sciences Centre, Toronto, Ont
| | - Nadia Jaber
- University of Toronto Spine Program, University of Toronto, Toronto, Ont
| | | | - Erin Cunningham
- Faculty of Medicine, University of New Brunswick, Fredericton, N.B
- Canada East Spine Centre, Saint John, N.B
| | - Tyler Adams
- Faculty of Medicine, University of New Brunswick, Fredericton, N.B
- Canada East Spine Centre, Saint John, N.B
| | - Dana El-Mughayyar
- Faculty of Medicine, University of New Brunswick, Fredericton, N.B
- Canada East Spine Centre, Saint John, N.B
| | - Erin Bigney
- Faculty of Medicine, University of New Brunswick, Fredericton, N.B
- Canada East Spine Centre, Saint John, N.B
| | - Amanda Vandewint
- Canada East Spine Centre, Saint John, N.B
- Faculty of Medicine, Dalhousie University, Saint John, N.B
| | - Neil Manson
- Canada East Spine Centre, Saint John, N.B
- Horizon Health Network, Saint John, N.B
| | - Edward Abraham
- Canada East Spine Centre, Saint John, N.B
- Horizon Health Network, Saint John, N.B
| | - Chris Small
- Canada East Spine Centre, Saint John, N.B
- Horizon Health Network, Saint John, N.B
| | | | | | - Jeffery Hebert
- Faculty of Medicine, University of New Brunswick, Fredericton, N.B
| | - Joel Werier
- Ottawa Hospital, Ottawa, Ont
- Ottawa Hospital Research Institute, Ottawa, Ont
- Orthopaedic Surgery Division, University of Ottawa, Ottawa, Ont
| | - Kevin Smit
- Orthopaedic Surgery Division, University of Ottawa, Ottawa, Ont
- Children's Hospital of Eastern Ontario, Ottawa, Ont
| | - James Villeneuve
- Ottawa Hospital, Ottawa, Ont
- Ottawa Hospital Research Institute, Ottawa, Ont
- Orthopaedic Surgery Division, University of Ottawa, Ottawa, Ont
| | - Adam Sachs
- Ottawa Hospital, Ottawa, Ont
- Ottawa Hospital Research Institute, Ottawa, Ont
- Orthopaedic Surgery Division, University of Ottawa, Ottawa, Ont
| | - Hesham Abdelbary
- Ottawa Hospital, Ottawa, Ont
- Ottawa Hospital Research Institute, Ottawa, Ont
- Orthopaedic Surgery Division, University of Ottawa, Ottawa, Ont
| | | | - Kawan Rakhra
- Ottawa Hospital, Ottawa, Ont
- Ottawa Hospital Research Institute, Ottawa, Ont
- Orthopaedic Surgery Division, University of Ottawa, Ottawa, Ont
| | - Philippe Phan
- Ottawa Hospital, Ottawa, Ont
- Ottawa Hospital Research Institute, Ottawa, Ont
- Orthopaedic Surgery Division, University of Ottawa, Ottawa, Ont
| | | | | | | | | | | | | | - Robert Koucheki
- Temerty Faculty of Medicine, University of Toronto, Toronto, Ont
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ont
| | - Aazad Abbas
- Temerty Faculty of Medicine, University of Toronto, Toronto, Ont
| | - Johnathan Lex
- Institute of Biomedical Engineering, University of Toronto, Toronto, Ont
- Division of Orthopedic Surgery, University of Toronto, Toronto, Ont
| | - Nicholas Nucci
- Division of Orthopedic Surgery, University of Ottawa, Ottawa, Ont
| | - Cari Whyne
- Holland Musculoskeletal Research Program, Sunnybrook Research Institute, Toronto, Ont
| | - Jeremie Larouche
- Division of Orthopedic Surgery, University of Toronto, Toronto, Ont
- Department of Orthopedic Surgery, Sunnybrook Health Sciences Centre, Toronto, Ont
| | - Henry Ahn
- Division of Orthopedic Surgery, University of Toronto, Toronto, Ont
- Department of Orthopedic Surgery, Sunnybrook Health Sciences Centre, Toronto, Ont
| | - Joel Finkelstein
- Division of Orthopedic Surgery, University of Toronto, Toronto, Ont
- Department of Orthopedic Surgery, Sunnybrook Health Sciences Centre, Toronto, Ont
| | - Stephen Lewis
- Division of Orthopedic Surgery, University of Toronto, Toronto, Ont
- Department of Orthopedic Surgery, Toronto Western Hospital, Toronto, Ont
| | - Jay Toor
- Division of Orthopedic Surgery, University of Toronto, Toronto, Ont
| | - Nathan J Lee
- Columbia University Medical Center, New York, N.Y
| | | | | | | | | | | | | | | | - Eric J Crawford
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont
| | - Robert A Ravinsky
- Department of Orthopaedics & Physical Medicine, Medical University of South Carolina, Charleston, S.C
| | - Anthony V Perruccio
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont
- Schroeder Arthritis Institute, University Health Network, Toronto, Ont
| | - Peter C Coyte
- Institute of Health Policy, Management and Evaluation, University of Toronto, Toronto, Ont
| | - Y Raja Rampersaud
- Schroeder Arthritis Institute, University Health Network, Toronto, Ont
- Division of Orthopaedic Surgery, Toronto Western Hospital, University Health Network & University of Toronto, Toronto, Ont
| | | | - Mohamed Sarraj
- Orthopaedic Surgery Division, McMaster University, Hamilton, Ont
| | - Fawaz AlShaalan
- King Faisal Specialist Hospital & Research Center, Riyadh, Saudi Arabia
| | - Alex Koziarz
- Orthopaedic Surgery Division, McMaster University, Hamilton, Ont
| | | | | | - Colby Oitment
- Orthopaedic Surgery Division, McMaster University, Hamilton, Ont
| | - Lalita Bharadwaj
- Orthopaedic Surgery Division, University of New Brunswick, Fredericton, N.B
| | - Dana El-Mughayyar
- Orthopaedic Surgery Division, University of New Brunswick, Fredericton, N.B
- Canada East Spine Centre, Saint John, N.B
- Horizon Health Network, Saint John, N.B
- Dalhousie Medicine New Brunswick, Saint John, N.B
| | - Erin Bigney
- Orthopaedic Surgery Division, University of New Brunswick, Fredericton, N.B
- Canada East Spine Centre, Saint John, N.B
- Horizon Health Network, Saint John, N.B
| | - Neil Manson
- Canada East Spine Centre, Saint John, N.B
- Horizon Health Network, Saint John, N.B
- Dalhousie Medicine New Brunswick, Saint John, N.B
| | - Edward Abraham
- Canada East Spine Centre, Saint John, N.B
- Dalhousie Medicine New Brunswick, Saint John, N.B
- Saint John Orthopaedics, Saint John, N.B
| | - Chris Small
- Canada East Spine Centre, Saint John, N.B
- Dalhousie Medicine New Brunswick, Saint John, N.B
- Saint John Orthopaedics, Saint John, N.B
| | - Najmedden Attabib
- Canada East Spine Centre, Saint John, N.B
- Horizon Health Network, Saint John, N.B
- Dalhousie Medicine New Brunswick, Saint John, N.B
| | - Eden Richardson
- Canada East Spine Centre, Saint John, N.B
- Horizon Health Network, Saint John, N.B
- Canadian Spine Outcomes and Research Network, Markdale, Ont
| | | | | | | | - Jeffrey Hebert
- Orthopaedic Surgery Division, University of New Brunswick, Fredericton, N.B
| | - Lior M Elkaim
- Department of Neurology and Neurosurgery, McGill University, Montréal, Que
| | | | - Farbod Niazi
- Faculty of Medicine, Université de Montréal, Montréal, Que
| | - Rakan Bokhari
- Department of Neurology and Neurosurgery, McGill University, Montréal, Que
| | | | - Oliver J Lasry
- Department of Neurology and Neurosurgery, McGill University, Montréal, Que
| | | | | | - Varun S Muddaluru
- Graduate Entry Medicine, Royal College of Surgeons in Ireland, Dublin, Leinster, Ireland
| | - Pranjan Gandhi
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont
| | | | - Daipayan Guha
- Division of Neurosurgery, McMaster University, Hamilton, Ont
| | - Markian A Pahuta
- Division of Orthopaedic Surgery, McMaster University, Hamilton, Ont
| | | | | | | | | | - Mamdoh Alhawsawi
- King Saud Medical City, Riyadh, Saudi Arabia
- Ottawa Civic Hospital, Ottawa, Ont
| | | | | | - Feras Qumquji
- King Saud Medical City, Riyadh, Saudi Arabia
- Ottawa Civic Hospital, Ottawa, Ont
| | | | | | | | | | | | | | | | | | | | | | | | | | | | - Marcelo Oppermann
- Department of Clinical Neurological Science, Schulich School of Medicine & Dentistry, Western University, London, Ont
- Department of Electrical Computer & Biomedical Engineering, Toronto Metropolitan University, Toronto, Ont
| | - Shaurya Gupta
- Department of Electrical Computer & Biomedical Engineering, Toronto Metropolitan University, Toronto, Ont
| | - Joel Ramjist
- Department of Electrical Computer & Biomedical Engineering, Toronto Metropolitan University, Toronto, Ont
| | - Priscila Santos Oppermann
- Department of Clinical Neurological Science, Schulich School of Medicine & Dentistry, Western University, London, Ont
| | - Victor X D Yang
- Department of Clinical Neurological Science, Schulich School of Medicine & Dentistry, Western University, London, Ont
- Department of Electrical Computer & Biomedical Engineering, Toronto Metropolitan University, Toronto, Ont
| | | | - Lior M Elkaim
- Department of Neurology and Neurosurgery, McGill University, Montréal, Que
| | - Farbod Niazi
- Faculty of Medicine, Université de Montréal, Montréal, Que
| | - Michael H Weber
- Department of Orthopaedic Surgery, McGill University, Montréal, Que
| | - Christian Ioro-Morin
- Service de neurochirurgie, Département de chirurgie, Université de Sherbrooke, Sherbrooke, Que
| | - Marco Bonizzato
- Department of Electrical Engineering and Institute of Biomedical Engineering, Polytechnique Montréal, Montréal, Que
- Department of Neuroscience and Centre interdisciplinaire sur le cerveau et l'apprentissage, Université de Montréal, Montréal, Que
| | - Alexander G Weil
- Division of Neurosurgery, St-Justine University Hospital, Montréal, Que
| | - Marcelo Oppermann
- Department of Clinical Neurological Science, Schulich School of Medicine & Dentistry, Western University, London, Ont
- Department of Electrical Computer & Biomedical Engineering, Toronto Metropolitan University, Toronto, Ont
| | - Joel Ramjist
- Department of Electrical Computer & Biomedical Engineering, Toronto Metropolitan University, Toronto, Ont
| | - Shaurya Gupta
- Department of Electrical Computer & Biomedical Engineering, Toronto Metropolitan University, Toronto, Ont
| | - Priscila S Oppermann
- Department of Clinical Neurological Science, Schulich School of Medicine & Dentistry, Western University, London, Ont
| | - Victor X D Yang
- Department of Clinical Neurological Science, Schulich School of Medicine & Dentistry, Western University, London, Ont
- Department of Electrical Computer & Biomedical Engineering, Toronto Metropolitan University, Toronto, Ont
| | - Youngkyung Jung
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont
| | - Varun Muddalaru
- Royal College of Surgeons in Ireland, Dublin, Leinster, Ireland
| | - Pranjan Gandhi
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont
| | - Daipayan Guha
- Michael G. DeGroote School of Medicine, McMaster University, Hamilton, Ont
| | | | | | - Aazad Abbas
- Faculty of Medicine, University of Toronto, Toronto, Ont
| | - Johnathan R Lex
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Ont
| | - Nicholas Nucci
- Division of Orthopedic Surgery, University of Ottawa, Ottawa, Ont
| | - Cari Whyne
- Sunnybrook Holland Musculoskeletal Research Program, Toronto, Ont
| | - Albert Yee
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Ont
- Sunnybrook Health Sciences Centre, Toronto, Ont
| | - Henry Ahn
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Ont
- St. Michael's Hospital, Toronto, Ont
| | - Joel Finkelstein
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Ont
- Sunnybrook Health Sciences Centre, Toronto, Ont
| | - Jeremie Larouche
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Ont
- Sunnybrook Health Sciences Centre, Toronto, Ont
| | - Stephen Lewis
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Ont
- Toronto Western Hospital, Toronto, Ont
| | - Jay Toor
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Ont
| | - Alaina Dhawan
- Faculty of Health Sciences, Queen's University, Kingston, Ont
| | - Jillian Dhawan
- Faculty of Health Sciences, Queen's University, Kingston, Ont
| | - Ajay N Sharma
- Faculty of Health Sciences, University of California, Irvine, Calif
| | - Daniel B Azzam
- Faculty of Health Sciences, Tufts University, Boston, Mass
| | - Ahmed Cherry
- Division of Orthopaedic Surgery, University of Toronto, Toronto, Ont
| | | | | | - Nathan J Lee
- Columbia University Medical Center, New York, N.Y
| | | | | | | | | | | | | | | | | | | | | | - Elizabeth Byers
- Biomedical Engineering, Pennsylvania State University, University Park, Pa
| | | | | | - Justin L Brown
- Biomedical Engineering, Pennsylvania State University, University Park, Pa
| | | | | | | | | | | | | | | | | | | | | | - Shevaughn Dell
- University Hospital of the West Indies, Kingston, Jamaica
| | | | - Kevin Wade
- University Hospital of the West Indies, Kingston, Jamaica
| | | | - Carl Bruce
- Department of Surgery, University of the West Indies, Jamaica
| | | | - Newton Pimenta
- Surgery Department, Université de Sherbrooke, Sherbrooke, Que
| | - Bernard LaRue
- Surgery Department, Université de Sherbrooke, Sherbrooke, Que
| | - Salman Aldakhil
- Surgery Department, Université de Sherbrooke, Sherbrooke, Que
| | | | - Jerome Couture
- Surgery Department, Université de Sherbrooke, Sherbrooke, Que
| | - Julien Goulet
- Surgery Department, Université de Sherbrooke, Sherbrooke, Que
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5
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Singh V, Oppermann M, Evaniew N, Soroceanu A, Nicholls F, Jacobs WB, Thomas K, Swamy G. L5-S1 pseudoarthrosis rate with ALIF versus TLIF in Adult Spinal Deformity surgeries: A retrospective analysis of 100 patients. World Neurosurg 2023:S1878-8750(23)00598-3. [PMID: 37146876 DOI: 10.1016/j.wneu.2023.04.113] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/03/2023] [Revised: 04/24/2023] [Accepted: 04/25/2023] [Indexed: 05/07/2023]
Abstract
OBJECTIVE Lumbosacral pseudoarthrosis is a common complication following adult spine deformity (ASD) surgery. This study assessed the reoperation rate for L5-S1 pseudoarthrosis in the ASD population. Compared with TLIFs, we hypothesized that ALIF would result in lower rates of L5-S1 pseudarthrosis. METHODS This is a single-center study with patient data retrieved from a prospective ASD Database. The patients had a long-segment fusion, ALIF or TLIF at the L5-S1 level with a 2-year follow-up and were divided into two groups (TLIF and ALIF). The study's primary outcome was to assess the difference in the reoperation rate for clinical pseudoarthrosis between the TLIF and the ALIF groups. The secondary outcomes measured the radiological pseudoarthrosis rate and identified risks for L5-S1 pseudoarthrosis development. RESULTS 100 patients were included; forty-nine patients (mean age 62.9 years,77.5% females) were in TLIF, and 51 patients (mean age 64.4 years,70.6% females) were in the ALIF group. Baseline characteristics were similar in both groups. Thirteen (13%) patients with L5- S1 pseudoarthroses required reoperation. Clinical pseudoarthrosis was higher in the TLIF group than in the ALIF group (12/49 vs 1/51, p<0.001). Univariate analysis demonstrated a higher risk of L5-S1 pseudoarthrosis with TLIF than ALIF (RR 12.4; 95% CI: 1.68-92.4, p<0.001). Multivariate analysis revealed 4.86 times the risk of L5-S1 clinical pseudoarthrosis with TLIF than with ALIF (RR 4.86; 95% CI 0.57-47, P=0.17), but this ratio did not reach statistical significance. CONCLUSION No difference in reoperation risk for L5-S1 pseudarthroses was observed based on the method of IF. rhBMP-2 was noted as a significant predictor.
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Affiliation(s)
- Vishwajeet Singh
- Division of Orthopedic surgery spine program, Department of Surgery, University of Calgary, Calgary, Alberta, Canada.
| | - Marcelo Oppermann
- Division of Orthopedic Surgery Spine Program, Department of Surgery, University of Alberta, Edmonton, Alberta, Canada
| | - Nathan Evaniew
- Division of Orthopedic surgery spine program, Department of Surgery, University of Calgary, Calgary, Alberta, Canada
| | - Alex Soroceanu
- Division of Orthopedic surgery spine program, Department of Surgery, University of Calgary, Calgary, Alberta, Canada
| | - Fred Nicholls
- Division of Orthopedic surgery spine program, Department of Surgery, University of Calgary, Calgary, Alberta, Canada
| | - W Bradley Jacobs
- Division of Neurosurgery Spine Program, Department of Clinical Neurosciences, University of Calgary, Calgary, Alberta, Canada
| | - Ken Thomas
- Division of Orthopedic surgery spine program, Department of Surgery, University of Calgary, Calgary, Alberta, Canada
| | - Ganesh Swamy
- Division of Orthopedic surgery spine program, Department of Surgery, University of Calgary, Calgary, Alberta, Canada
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6
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Aldahamsheh O, Burger LD, Evaniew N, Swamy G, Jacobs WB, Thomas KC, Nicholls F. Unexpected intraoperative positive culture (UIPC) in presumed aseptic revision spine surgery: a systematic review and meta-analysis. Spine J 2023; 23:492-503. [PMID: 36336255 DOI: 10.1016/j.spinee.2022.10.016] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 10/16/2022] [Accepted: 10/26/2022] [Indexed: 11/06/2022]
Abstract
BACKGROUND CONTEXT Unexpected intraoperative positive culture (UIPC) has recently become increasingly common in revision spine surgery, being implicated as an etiological factor in revision spine surgery indications such as implant failure or pseudoarthrosis. PURPOSE Utilizing the available literature, this study aimed to investigate the prevalence of UIPC, and its clinical importance in patients following presumed aseptic revision spine surgery. STUDY DESIGN Meta-analysis and systematic review. METHODS Multiple databases and reference articles were searched until May 2022. The primary outcome was the pooled rate of UIPC, and the secondary outcomes were the microbiological profile of UIPC, the risk factors of UIPC, and the clinical fate of UIPC. RESULTS Twelve studies were eligible for meta-analysis, with a total of 1,108 patients. The pooled rate of UIPC was 24.3% (95% CI=15.8%-35.5%) in adult patients, and 43.2% (95% CI=32.9%-54.2%) in pediatric patients. The UIPC rate was higher when both conventional wound culture and sonication were used together compared to sonication alone or conventional wound culture alone. The rates were 28.9%, 23.6%, and 15.5 %, respectively. In adult and pediatric patients, the most commonly cultured organism was Cutibacterium acnes (42.5% vs 57.7%), followed by coagulase-negative Staphylococcus (39.9% vs 30.5%). Male patients had a higher rate of UIPC (OR= 2.6, 95% CI=1.84-3.72, p<.001), as did patients with a longer fusion construct (MD=0.76, 95% CI=0.27-1.25, p<.001). CONCLUSIONS The pooled rate of UIPC in aseptic spine revision surgery was 24.3% and 43.2% in adult and pediatric patients respectively. The most common organisms were C. acnes and coagulase-negative Staphylococcus. The impact of UIPC on patients` clinical outcomes is not fully understood. We are not able to recommend routine culture in revision spine surgery, however, adding sonication may aid in the diagnosis of UIPC. There is not enough evidence to recommend specific treatment strategies at this time, and further studies are warranted.
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Affiliation(s)
- Osama Aldahamsheh
- Division of Orthopedic Surgery-Spine Program, Department of Surgery, University of Calgary, 1403 - 29 St, NW Calgary, Alberta, Canada.
| | - Lukas D Burger
- Division of Orthopedic Surgery-Spine Program, Department of Surgery, University of Calgary, 1403 - 29 St, NW Calgary, Alberta, Canada
| | - Nathan Evaniew
- Division of Orthopedic Surgery-Spine Program, Department of Surgery, University of Calgary, 1403 - 29 St, NW Calgary, Alberta, Canada
| | - Ganesh Swamy
- Division of Orthopedic Surgery-Spine Program, Department of Surgery, University of Calgary, 1403 - 29 St, NW Calgary, Alberta, Canada
| | - W Bradley Jacobs
- Division of Orthopedic Surgery-Spine Program, Department of Surgery, University of Calgary, 1403 - 29 St, NW Calgary, Alberta, Canada
| | - Kenneth C Thomas
- Division of Orthopedic Surgery-Spine Program, Department of Surgery, University of Calgary, 1403 - 29 St, NW Calgary, Alberta, Canada
| | - Fred Nicholls
- Division of Orthopedic Surgery-Spine Program, Department of Surgery, University of Calgary, 1403 - 29 St, NW Calgary, Alberta, Canada
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Sidhu K, Kim D, Lebel D, Alshammari A, Photopoulos G, Duarte MP, Provost M, Nielsen C, Oitment C, Cowley R, Dumas E, Dea N, Versteeg A, Eltit F, Rampersaud YR, Dandurand C, Grassner L, Alduwaisan A, Kennedy C, Christie S, Toobaie A, Algarni N, El-Mughayyar D, Pahuta M, Grassner L, Pelletier-Roy R, Bak AB, Singh S, Abbas A, Abbas A, Abbas A, Ajisebutu A, Aldahamsheh O, Martin S, Baron N, Basiratzadeh S, Beresford-Cleary N, Good C, Thomson A, Bhatt F, Bhatt F, Good C, Thomson A, Blake N, Briand MM, Shah V, Chen T, Cherry A, Rocos B, Cherry A, Chua R, Chua R, Cotter T, Coyle MJ, Dandurand C, Dandurand C, Dandurand C, Dauphinee E, Dionne A, El Bojairami I, Duarte MP, Duarte MP, Elahi MT, Ellingwood N, Ells B, Fallah N, Fernandes R, Fernandes R, Fleury C, Flórez-Jiménez S, Li P, Gennari A, Georgiopoulos M, Greene R, Yu C, Werthmann N, Hakimjavadi R, Hakimjavadi R, Heard B, Hutchison C, Kemna C, Kennedy C, Laflamme M, Laskin J, MacLean M, Mac-Thiong JM, Manson N, Manson N, Manson N, Urquhart J, Kuepper E, Pahuta M, Pahuta M, Parker E, Persad A, Phan K, Rachevitz M, Ridha B, Dhaliwal P, Sakoto S, Sarraj M, Sarraj M, Hache P, Singh S, Slosar P, Sun M, Sundararajan K, Sundararajan K, Thornley P, Thornley P, Thornley P, Thornley P, Thorogood N, Toobaie A, Belhouari S, Olotu O, Du JT, Saleh I, Varga A, Varshney V, Versteeg A, Visnjevac O, Wang Z, Wasim A, Wasim A, Wu J, Filezio M, Singh V, Ferri-de-Barros F, Dermott J, Lebel D, Machida M, Bath N, Levin D, Campbell F, Koyle M, Isaac L, Ruskin D, Brennenstuh S, Stinson J, Navarro-Ramirez R, Rabau O, Ouellet JA, Hurry J, Brooks J, Fitzgerald R, Louer C, Murphy J, Shaw KA, Smit K, El-Hawary R, Joncas J, Parent S, Duval M, Chèmaly O, Brassard F, Mac-Thiong JM, Barchi S, Labelle H, Beauséjour M, Ishimo MC, Joncas J, Labelle H, Le May S, Lewis L, Arnold K, Oitment C, Jentzsch T, Lewis S, Rienmuller A, Jentzsch T, Yashuv HS, Martin A, Nielsen C, Berven S, Ludwig T, Coyle M, Asmussen M, Edwards B, Nicholls F, Bigney E, Fleury C, El-Mughayyar D, Cherry A, Vanderwint A, Richardson E, Kerr J, McPhee R, Abraham E, Manson N, Attabib N, Small C, Couture J, Goulet J, Bédard S, Lebel K, LaRue B, Investigators CSORN, Gal R, Verlaan JJ, Charest-Morin R, Fisher CG, Wessels H, Verkooijen L, Ng T, Gokaslan Z, Fisher C, Dea N, Charest-Morin R, Urquhart J, Glennie A, Fisher C, Bailey C, Mcintosh G, Fisher C, Paquet J, Abraham E, Bailey C, Weber M, Johnson M, Nataraj A, Glennie A, Attabib N, Kelly A, Hall H, Rampersaud R, Manson N, Phan P, Thomas K, Dea N, Thomé C, Kögl N, Vo AK, Kramer JLK, Petr O, Visva S, Phan K, Nguyen-Luu T, Stratton A, Kingwell S, Wai E, Phan P, Puskas D, Pahuta M, Marion T, Greene R, Kehler S, Rockwood K, Urquhart J, Thornley P, Rasoulinejad P, Glennie A, Rampersaud R, Manson N, Abraham E, Fisher C, Charest-Morin R, Paquette S, Gélinas-Phaneuf N, Thomas K, Dea N, Dvorak M, Kwon B, Street J, Ailon T, Christie S, Bailey C, McIntosh G, Dea N, Charest-Morin R, Adams T, Bigney E, Cunningham E, Richardson E, Vandewint A, Attabib N, Abraham E, Manson N, Small C, LeRoux A, Kolyvas G, Investigators CSORN, Hebert J, Jiang E, Fisk F, Taliaferro K, Stukas S, Cooper J, Gill J, Fallah N, Skinnider MA, Belanger L, Ritchie L, Tsang A, Dong K, Streijger F, Street J, Paquette S, Ailon T, Dea N, Charest-Morin R, Fisher CG, Dvorak MF, Wellington C, Kwon BK, Dionne A, Richard-Denis A, Briand MM, Bourassa-Moreau É, Mac-Thiong JM, Moghaddamjou A, Fehlings MG, Nadeau M, Fisher C, Toor J, Larouche J, Finkelstein J, Whyne C, Yee A, Toor J, Du JT, Versteeg A, Yee N, Finkelstein J, Abouali J, Nousiainen MT, Kreder H, Whyne C, Larouche J, Toor J, Lewis S, Finkelstein J, Larouche J, Yee A, Whyne C, Dhaliwal P, Hasan M, Berrington N, Johnson M, Burger L, Nicholls F, Evaniew N, Cobetto N, Aubin CE, Larson AN, Cheng Y, Fourney D, Hakimjavadi R, Michalowski W, Viktor H, Baddour N, Wai E, Stratton A, Kingwell S, Phan P, Dandurand C, Mawhinney G, Reynolds J, Orosz L, Thomson A, Bhatt F, Guth M, Allen B, Boyd D, Grigorian J, Schuler T, Jazini E, Haines C, Orosz L, Bhatt F, Allen B, Sabet A, Schuler T, Haines C, Jazini E, Orosz L, Thomson A, Namian S, Bharara N, Jazini E, Good C, Schuler T, Haines C, Orosz L, Tewari A, Roy R, Good C, Schuler T, Haines C, Jazini E, Orosz L, Thomson A, Bhatt F, Grigorian J, Schuler T, Haines C, Merril J, Roy R, Jazini E, Wang M, Orosz L, Haines C, Jazini E, Bhatt F, Sabet A, Roy R, Schuler T, Good C, Greene R, Schmidt M, Christie S, Richard-Denis A, Le MT, Lim V, Mac-Thiong JM, Gallagher M, Cheung A, Brown J, Chaudhry H, Yee C, McIntosh G, Christie S, Fisher C, Jarzem P, Roy JF, Bouchard J, Yee A, Eseonu K, Ahn H, Cherry A, Rampersaud R, Davidson B, Rabinovitch L, Nielsen C, Jiang F, Vaisman A, Lewis S, Canizares M, Rampersaud R, Investigators CSORN, Avila M, Burket A, Aguilar-Salinas P, Mongrain R, Ouellet J, Driscoll M, Schmidt-Braekling T, Dobransky J, Kreviazuk C, Gofton W, Phan P, Beaule P, Grammatopoulos G, Street J, Fisher C, Jacobs B, Johnson M, Paquet J, Wilson J, Hall H, Bailey CS, Christie S, Nataraj A, Manson N, Phan P, Rampersaud R, Thomas K, Mcintosh G, Rasoulinejad P, Charest-Morin R, Hindi M, Farimani PL, Mashayekhi MS, Ailon T, Boyd M, Charest-Morin R, Dea N, Dvorak M, Fisher C, Kwon B, Paquette S, Street J, Urquhart J, Ailon T, Bailey C, Boyd M, Charest-Morin R, Dea N, Dvorak M, Glennie A, Kwon B, Paquette S, Rampersaud R, Street J, Fisher C, Vandewint A, Bigney E, El-Mughayyar D, Richardson E, Edward A, Manson N, Attabib N, Kolyvas G, Small C, Investigators CSORN, Mac-Thiong JM, Barthélémy D, Lim V, Richard-Denis A, Driscoll M, Aubin CE, Cobetto N, Roy-Beaudry M, Bellefleur C, Turgeon I, Labelle H, Barchi S, Parent S, Joncas J, Parent S, Labelle H, Barchi S, Mac-Thiong JM, Lee W, Phan P, Bigney E, Richardson E, El-Mughayyar D, Vandewint A, Abraham E, Manson N, Small C, Alugo T, Leroux A, Kolyvas G, Investigators CSORN, Attabib N, McIntosh G, Oxner W, Dunning PC, Glennie A, Wang D, Humphreys S, Noonan V, Urquhart J, Siddiqi F, Rasoulinejad P, Bailey C, Urquhart J, Thornley P, Rampersaud R, Glennie A, Rasoulinejad P, Fisher C, Bailey C, Investigators CSORN, Bigney E, Dumas E, El-Mughayyar D, Cherry A, Vanderwint A, Richardson E, Kerr J, McPhee R, Abraham E, Manson N, Attabib N, Small C, Couture J, Goulet J, Bédard S, LaRue B, Investigators CSORN, Macthiong JM, Bourassa-Moreau E, Ogden C, Gallagher M, Cheung A, Huong VT, Tarabay B, Al-Shakfa F, Yuh SJ, Shedid D, Boubez G, Wang Z, Gueziri HE, Santaguida C, Collins DL, Hall A, Alant J, Barry S, Weise L, Glennie A, Oxner B, Etchegary H, Christie S, Carreon L, Glassman S, Brown M, Daniels C, Polly D, Gum J, Gum J, Glassman S, Brown M, Daniels C, Carreon L, Hong HA, Fallah N, Humphreys S, Walden K, Noonan VK, Phan P, Basiratzadeh S, Wai EK, Phan P, Salo P, Krawetz R, Hart D, Bains I, Swamy G, Yang Q, Godoy A, Smith S, Lin C, Nataraj A, Puskas D, Pahuta M, Marion T, Dea N, Waheed Z, Thorogood N, Nightingale T, Noonan V, Touchette C, Duda T, Almojuela A, Bergeron D, Aljoghaiman M, Sader N, Kameda-Smith M, Alant J, Christie S, Hresko MT, Alzakri A, Parent S, Sucato DJ, Lenke LG, Marks M, Labelle H, Pereira P, Charles YP, Krutko A, Santos C, Park Y, Arzoglou V, Park SW, Franke J, Fuentes S, He S, Hosszu T, Varanda P, Mlyavykh S, Vanhauwaert D, Senker W, Franke J, Park Y, Charles YP, Santos C, Arzoglou V, Song Y, He S, Bhagat S, Hong JY, Vanhauwaert D, Senker W, Pereira P, Senker W, Charles YP, Pereira P, Santos C, Park Y, Arzoglou V, Park SW, Bordon G, Fuentes S, Song Y, Vialle E, Bhagat S, Krutko A, Franke J, Thornley P, Rampersaud R, Glennie A, Rasoulinejad P, Abraham E, Ailon T, Charest-Morin R, Dea N, Dvorak M, Gélinas-Phaneuf N, Kwon B, Manson N, Paquette S, Street J, Thomas K, Fisher C, Bailey C, Mishreky A, Hurry J, El-Hawary R, Jiang E, Fisk F, Taliaferro K, Dea N, Investigators CSORN, Al Anazi M, El-Hawary R, Kindrachuk M, Noyes E, Wu A, Fourney D, Pratt M, Wai E, Stratton A, Kingwell S, Wang Z, Phan P, Robarts S, Razmjou H, Yee A, Larouche J, Finkelstein J, Persad A, Huschi Z, Cheng Y, Fourney D, Rossong H, Zhang H, Johnson M, Goytan M, Zarrabian M, Berrington N, Zeiler F, Charles A, Roy-Beaudy, Parent S, Duong L, Marion T, Guha D, Pahuta M, Hache P, Oitment C, Guha D, Pahuta M, Sarraj M, Oitment C, Guha D, Pahuta M, Miyanji F, McAnany S, Cheung A, Dewitt D, Street J, Jurisica I, Perruccio AV, Rampersaud YR, Niu Y, Perruccio AV, Jurisica I, Rampersaud YR, Glennie A, Alahmari A, Al-Jahdali F, Fisher C, Rampersaud R, Urquhart J, Bailey C, Urquhart J, Bailey C, Urquhart J, Rampersaud R, Glennie A, Fisher C, Bailey C, Urquhart J, Rampersaud R, Glennie A, Fisher C, Bailey C, Harback K, Akpinar I, Adjetey C, Tindall D, Chernesky J, Noonan V, Fernandes RJR, Bailey C, Siddiqi F, Rasoulinejad P, Toor J, Abbas A, Brooks H, Larouche J, Abbas A, Bhatia A, Selimovic D, Larouche J, Yee A, Lewis S, Finkelstein J, Toor J, Abbas A, Toor J, Versteeg A, Finkelstein J, Toor J, Abbas A, Ahn H, Larouche J, Finkelstein J, Whyne C, Yee A, Slomp F, Thiessen E, Lastivnyak N, Maclean LS, Ritchie V, Hockley A, Osborn J, Paquette S, Sahjpaul R, Gal R, Charest-Morin R, Verlaan JJ, Wessels H, Fisher CG, Verkooijen L, Pastrak M, Truong VT, Liberman M, Al-Shakfa F, Yuh SJ, Soder SA, Wu J, Sunna T, Renaud-Charest É, Boubez G, Shedid D, Balasuberamaniam P, Shrikumar M, Chen T, Anthony T, Phillips A, Nathens A, Chapman M, Crawford E, Stark R, Schwartz C, Finkelstein J, Small C, Rampersaud R. Canadian Spine SocietyAbstract 57. Radiographic reporting in adolescent idiopathic scoliosis: Is there a discrepancy comparing radiologists’ reports and surgeons’ assessments?Abstract 74. How useful is prereferral spine imaging? A quality improvement projectAbstract 82. Early recovery after surgery, predictors of shorter length of stayAbstract 68. Gliding screws on early-onset scoliosis: a 5-year experienceAbstract 66. Reliability of radiographic assessment of growth modulation from anterior vertebral body tethering surgery in pediatric scoliosisAbstract 16. A dangerous curve: impact of the COVID-19 pandemic on brace treatment in adolescent idiopathic scoliosisAbstract 24. Development of a model of interprofessional support interventions to enhance brace adherence in adolescents with idiopathic scoliosisAbstract 94. Recognizing the importance of self-image in adult spinal deformity: results from the Prospective Evaluation of Elderly Deformity Surgery (PEEDS)Abstract 25. Assessing pain as a primary factor in the surgical treatment of adult spinal deformity surgery in patients over 60 years of ageAbstract 72. Application of the Ames-International Spine Study Group (AMES) radiographic modifiers to an asymptomatic population. Are the thresholds for “normal” appropriate?Abstract 109. Exploring the relationship between cannabis and narcotic use on preoperative health considerations in Canadian thoracolumbar patients: a CSORN studyAbstract 36. Metastatic spine disease: Should patients with short life expectancy be denied surgical care? An international retrospective cohort studyAbstract 91. What do patients expect of palliative treatment for symptomatic spinal metastases? A qualitative studyAbstract 44. Denosumab for giant cell tumours of the spine: molecular predictors of clinical response — a pilot studyAbstract 89. Surgical management and outcomes from “stable” degenerative spondylolisthesis (DS) from the CSORN prospective DS study: What the @#$ % are we doing?Abstract 33. Economic consequences of waiting for lumbar disc herniation surgeryAbstract 108. Motor recovery depends on timing of surgery in patients with lumbar disc herniationAbstract 106. Outcomes following revision decompression for lumbar spinal stenosis when compared to primary decompression: a matched cohort analysis using the Canadian Spine Outcomes and Research Network registryAbstract 64. Patient engagement, remote monitoring and virtual care — a pilot project in rural and remote patients undergoing elective lumbar surgeryAbstract 84. Development of a frailty index from the Canadian Spine Outcomes and Research Network (CSORN) to predict long-term success of surgery for patients with degenerative pathologies of the spineAbstract 102. Posterolateral versus posterior interbody fusion for the management of lumbar degenerative spondylolisthesis: analysis from the CSORN prospective LDS propensity score matched studyAbstract 31. Impact on patient-reported outcomes of ending the posterior construct proximally at C2 versus C3 in degenerative cervical myelopathy patientsAbstract 42. Perioperative factors predict 2-year trajectories of pain and disability following anterior cervical discectomy and fusionAbstract 61. Calculating utilities from the modified Japanese Orthopaedic Association score: a prerequisite for quantifying the value of care for cervical myelopathyAbstract 119. Serum neurofilament light (NF-L) and glial fibrillary acidic protein (GFAP) biomarkers and their association with MRI findings in human acute traumatic spinal cord injuryAbstract 95. The Montreal Acute Classification of Spinal Cord Injury (MAC-SCI): a new tool to detect and characterize spinal cord injury in the trauma patientAbstract 118. Mechanism of injury is associated with neurologic outcomes after cervical sensorimotor complete acute traumatic spinal cord injuryAbstract 13. Patient perspective: diagnosis and prognosis of acute spinal cord injuriesAbstract 136. Predictive analytics to improve dedicated spine trauma operating room resource allocationAbstract 138. Machine learning models to predict surgical resident workload at a level 1 trauma centreAbstract 139. Machine learning to predict duration of surgery and length of stay for single-level discectomy proceduresAbstract 9. Outpatient spinal surgery in ManitobaAbstract 131. Unexpected positive culture in presumed aseptic revision spine surgery: a systematic review and meta-analysisAbstract 50. Lumbar anterior vertebral body tethering: biomechanical assessment of the surgical decision factors influencing the immediate and 2 years postoperative correctionAbstract 145. Does prolonged symptom duration influence surgical outcomes for cervical radiculopathy?Abstract 147. A data-driven cluster analysis approach to create homogenous subgroups for traumatic spine injury: toward improving traditional classificationAbstract 41. The use of neo-adjuvant denosumab in treatment of giant cell tumours of the spineAbstract 5. Complications, revision rates and accuracy of robotic-guided S2 alar-iliac screw placementAbstract 6. Opioid use after spine surgery: How much are we over-prescribing?Abstract 7. Intradiscal injection of autologous bone marrow aspirate concentrate improves low back pain at 1 yearAbstract 8. Augmented reality–assisted spine surgery: an early experience demonstrating safety and accuracy with 218 screwsAbstract 22. Comparison of complications, revision rates and fluoroscopy time using the latest technology in robotic-guided surgery with historical fluoroscopic-guided controlsAbstract 23. Robotic-guided thoracolumbar fusion experience: a multi-surgeon, single-centre study of 628 patients and 3874 robotic-guided screws from 2012 to 2020Abstract 86. A province-wide assessment of the appropriateness of lumbar spine MRIAbstract 134. Concomitant traumatic spinal cord injury and brain injury diagnoses are more frequent and impactful than expectedAbstract 45. Spatial and depth mapping of nascent mineralization on Ti6Al4V surfaces demonstrating hierarchical macro-micro-nanoscale surface featuresAbstract 111. Propensity-matched outcomes comparing lumbar interbody fusion and total disk arthroplasty: a Canadian Spine Outcomes and Research Network (CSORN) studyAbstract 30. A Canadian-based pilot study of current surgical practice and implant preferences in lumbar fusion surgeryAbstract 32. Local contamination is a major cause of early deep wound infections following open posterior lumbosacral fusionsAbstract 99. Comparing patient preoperative expectations and postoperative expectation fulfillment between minimally invasive versus open fusion surgeryAbstract 146. Outpatient robotic-assisted lumbar spinal fusion using the Mazor X Stealth EditionAbstract 149. Lessons learned from my first 100 robotic-assisted lumbar fusions using the Mazor X Stealth Edition: surgical synergy with MIS, surgical navigation and roboticsAbstract 151. Freehand biomechanical testing for use in lumbar discectomy trainingAbstract 48. Spinal pathology and outcome post-THA: Does segment of arthrodesis matter?Abstract 27. Patient, surgical and institutional factors associated with length of stay in degenerative lumbar spine surgery: national multicentre cohort analysis from the Canadian Spine Outcomes and Research Network (CSORN)Abstract 28. The impact of the increasing proportion of degenerative spine emergency admissionsAbstract 51. Patient’s expectations of surgery for degenerative spondylolisthesis: analysis by site and type of surgery from the Canadian Spine Outcomes and Research Network (CSORN)Abstract 60. The impact of sex on thoracolumbar surgery outcomes in patients with diabetes — a CSORN studyAbstract 81. The impact of older age on rehabilitation outcomes following functional motor-incomplete traumatic spinal cord injuryAbstract 47. Devise and investigate a novel, intramuscular pressure based, muscle activation strategy in a spine stability modelAbstract 17. 3D radiologic outcomes for patients with moderate idiopathic scoliosis curves treated with internal (anterior vertebral growth modulation) versus external bracing: a 2-year observational studyAbstract 18. Is quality of life affected by concomitant isthmic spondylolisthesis when undergoing surgery for adolescent idiopathic scoliosis and nonsurgical management of the spondylolisthesis?Abstract 128. Toward macrostructural and microstructural investigation of the cervical spinal cord through quantitative analysis of T2-weighted and diffusion-weighted imagingAbstract 26. Minimally invasive versus open thoracolumbar spine surgery for patients who have lumbar spinal stenosis and an ASA score of 3 or above: a CSORN studyAbstract 101. Association between surgeon age and outcomes of spine surgery: a population-based retrospective cohort studyAbstract 77. Utilizing machine learning methodology to create a short form of the Multi-Morbidity Index in spinal cord injuryAbstract 70. Ten-year reoperation rate and clinical outcome in patients treated surgically for lumbar spinal stenosisAbstract 105. Assessing the importance of radiographic and clinical parameters when choosing decompression without fusion for LDS: results from the CSORN prospective DS studyAbstract 104. Preoperative cannabis use in Canadian thoracolumbar spine surgery patients: a CSORN studyAbstract 142. Post-traumatic ascending myelitis, about 2 cases, etiologic analysis and treatmentAbstract 55. NanoLOCK surfaces enhance osteoblast activities at the cellular levelAbstract 76. Which scoring system is the most accurate for predicting survival in patients undergoing surgery for spinal metastases from lung cancer?Abstract 11. Pedicle screw insertion using ultrasound-based navigation without intraoperative radiation: feasibility study on porcine cadaversAbstract 85. What barriers prevent patients being discharged from hospital following elective spine surgery?Abstract 15. Propensity-matched comparison of 90-day complications in robotic-assisted versus non-robotic-assisted lumbar fusionAbstract 56. No-tap (2-step) robotic-assisted cortical bone trajectory (RA-CBT) screw insertion is safe and efficient: comparative analysis of 179 patients and 924 RA-CBT screwsAbstract 124. Developing a Web-based application to promote the adoption of a clinical prediction model for independent walking in people with traumatic spinal cord injury — a protocolAbstract 125. Multivariable prediction models for prognostication after traumatic spinal cord injury — a systematic reviewAbstract 148. Expression of blood serum cytokines in the presentation of acute sciaticaAbstract 150. Do patient-reported outcome scores (PROs) correlate with bundled payment plan performance for elective spine surgeries?Abstract 46. Effects of delayed neurosurgery on anxiety, depression and economic burdenAbstract 69. Care close to home — a retrospective analysis of patients undergoing elective lumbar surgery in a rural satellite hospitalAbstract 110. Surgical adverse events for primary tumours of the spine and their impact on prognosis and outcomes: a PTRON studyAbstract 80. Spinal cord stimulation research in the restoration of function for individuals living with spinal cord injuries: a scoping reviewAbstract 132. Workup and management of asymptomatic extracranial traumatic vertebral artery injury: a Canadian Neurosurgery Resident Research Collaborative studyAbstract 12. A surgical treatment algorithm for restoring pelvic balance and health-related quality of life in high-grade lumbosacral spondylolisthesisAbstract 38. Effectiveness of 6 surgical approaches for minimally invasive lumbar interbody fusion: 1-year follow-up results from a global multicentre studyAbstract 39. Clinical outcomes and fusion success in patients with degenerative lumbar disease without spondylolisthesis: comparing anterolateral to posterior MIS approaches from a global multicentre studyAbstract 40. Anterolateral versus posterior approaches to minimally invasive interbody fusion for patients with spondylolisthesis: results at 1-year follow-up from a global multicentre studyAbstract 73. Benefit of minimally invasive lumbar interbody fusion versus traditional interbody fusion versus posterolateral spinal fusion in lumbar degenerative spondylolisthesis: a propensity-matched analysis from the CSORN prospective LDS studyAbstract 67. The effect of fusionless pediatric scoliosis surgery on 3D radiographic spinopelvic alignmentAbstract 62. Calculating utilities from the Neck Disability Index: a prerequisite for quantifying the value of cervical spine careAbstract 63. The psychometric properties of the mJOA for quality-of-life assessments in cervical myelopathyAbstract 59. Low radius of curvature growth friendly implants increases the risk of developing clinically significant proximal junctional kyphosisAbstract 144. Very long–term outcome of single-level minimally invasive lumbar microdiscectomy with a tubular retractorAbstract 112. Metal implant hypersensitivity in patients undergoing spinal surgery: a literature review and case reportAbstract 43. Diagnostic value of the lumbar spinal stenosis (SSHQ) survey in virtual care provided at a tertiary spine programAbstract 54. Is the Calgary Postoperative Pain After Spine Surgery (CAPPS) score correlated with long-term outcomes after lumbar fusion?Abstract 4. Development of a single-entry referral pathway for patients with spinal conditions in Manitoba: a cross-sectional review of impact and potential way forward for Canadian spine programsAbstract 113. Automatization of bone age calculationAbstract 123. An effectiveness and quality-of-life analysis of conservative care versus surgery for moderate and severe cervical myelopathyAbstract 133. Long-term survivorship of cervical spine procedures: a survivorship meta-analysis and meta-regressionAbstract 137. Natural history of degenerative cervical myelopathy: a meta-analysis and neurologic deterioration survival curve synthesisAbstract 14. Does intraoperative vancomycin powder affect postoperative infections in adolescent idiopathic scoliosis?Abstract 37. The clinical impact of nano-surface technology on postoperative opioid consumption in patients undergoing anterior lumbar interbody fusionAbstract 130. Design and implementation of a comprehensive perioperative complex spine communication toolAbstract 87. Stratifying low back pain patients in an inter-professional education and self-management model of care: results of a latent class analysisAbstract 88. Cohort accuracy versus confidence at the patient level: clinical challenges for AI-based prediction of low back pain outcomesAbstract 96. Preoperative disc angle is an important predictor of segmental lordosis after degenerative spondylolisthesis fusionAbstract 97. Preoperative depression, functional and radiographic outcomes after surgery for degenerative lumbar spondylolisthesisAbstract 116. A CSORN study of functional outcomes after surgery for lumbar degenerative spondylolisthesisAbstract 121. A CSORN study of the effect on radiographic alignment outcomes with different surgery type for degenerative lumbar spondylolisthesisAbstract 79. Spinal cord stimulation to restore neurological function: a costing analysisAbstract 107. Biomechanical properties of a novel morselized bone graft cageAbstract 93. Optimizing spine surgery instrument trays to immediately increase efficiency and reduce costs in the operating roomAbstract 103. Machine learning models can predict subsequent publication of North American Spine Society Annual General Meeting abstractsAbstract 117. The use of primary sacroiliac joint fusion for lower back pain due to sacroiliac joint pathology: a systematic review and meta-analysisAbstract 141. How to make the most of your operative time by optimizing surgical schedulingAbstract 126. Altering physician referral practices remains a challenge: a spine assessment clinic quality improvement studyAbstract 152. Outcomes of workers’ compensation patients undergoing neuromodulation for persistent neuropathic pain conditionsAbstract 90. Expectations of treatment outcomes in patients with spinal metastases: What do we tell our patients? A qualitative studyAbstract 52. Fluoroscopically guided radiofrequency ablation of the superior cluneal nerve: preliminary outcomes data for a minimally invasive approach for treating superior cluneal neuralgiaAbstract 21. Single-stage posterior approach for en bloc resection and spinal reconstruction of T4 Pancoast tumour invading spineAbstract 34. Predictors of sacral ulcers in patients with complete spinal cord injuryAbstract 135. Targeting geographic wait time disparities in Canada: a rapid review of domestic and international strategies to reduce orthopedic wait times in the MaritimesAbstract 143. The influence of coronal plane parameters on patient-reported outcome measures in patients undergoing decompression for lumbar spinal stenosis. Can J Surg 2022. [DOI: 10.1503/cjs.011622] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
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Power JD, Glennie A, Rogers S, Aziz M, Singh S, Dandurand C, Tauh S, Richard-Denis A, Morris S, Richard-Denis A, Lim V, Mputu PM, Soroceanu A, Sadiq I, Daly C, Dandurand C, Larouche J, Correale M, Sharma A, Charest-Morin R, Lee J, Ajoku U, Moskven E, Asif H, Al-attar ENM, Mishreky A, Rocos B, Rocos B, Rocos B, Srivastava SK, Patgaonkar P, Cummins D, Bednar D, Chan V, Bowker R, Evaniew N, Hathi K, Hall H, Ludwig T, Ludwig T, Truong VT, Passalent L, Wang S, Shaikh N, Pelletier-Roy R, Shen J, Wang Z, Singh S, Machida M, Machida M, Fernandes R, Fernandes R, Marathe N, Kerr J, Magnan MC, Visva S, Jarvis J, Jarvis J, Jentzsch T, Cherry A, Cherry A, Cherry A, Dandurand C, Rampersaud R, Sundararajan K, Levasseur A, Fernandes R, Fernandes R, Fullerton K, Malone H, Daly C, Peloza J, Peloza J, Walden K, Elsemin O, MacLean MA, Rose J, Oppermann M, Ferguson D, Hindi M, Dermott JA, DeVries Z, Lebel D, Ayling O, Singh V, Craig M, Lasswell T, Perruccio AV, Canizares M, McIntosh G, Rampersaud YR, Urquhart J, Koto P, Rasoulinejad P, Sequeira K, Miller T, Watson J, Rosedale R, Gurr K, Siddiqi F, Bailey C, Manson N, Bigney E, Vandewint A, Richardson E, El-Mughayyar D, McPhee R, Abraham E, Weber M, McIntosh G, Kelly A, Santaguida C, Ouellet J, Reindl R, Jarzem P, Lasry O, Dea N, Fisher C, Street J, Boyd M, Charest-Morin R, Rhines L, Boriani S, Charest-Morin R, Gokaslan Z, Gasbarrini A, Saghal A, Laufer II, Lazary A, Bettegowda C, Kawahara N, Clarke M, Rampersaud YR, Reynolds J, Disch A, Chou D, Shin JH, Wei F, Hornicek FJ, Barzilai O, Fisher C, Dea N, Nickel D, Thorpe L, Brown J, Weiler R, Linassi G, Fourney D, Dionne A, Bégin J, Mac-Thiong JM, Yung A, George S, Prevost V, Bauman A, Kozlowski P, Samadi F, Fournier C, Parker L, Dong K, Streijger F, Moore GW, Laule C, Kwon B, Gravel LF, Dionne A, Bourassa-Moreau E, Maurais G, Khoueir P, Mac-Thiong JM, Richard-Denis A, Dionne A, Bourassa-Moreau É, Bégin J, Mac-Thiong JM, Beausejour M, Richard-Denis A, Begin J, Dionne A, Mac-Thiong JM, Scheer J, Protopsaltis T, Gupta M, Passias P, Gum J, Smith J, Bess S, Lafage V, Ames C, Klineberg E, Frederick A, Nicholls F, Lewkonia P, Thomas K, Jacobs B, Swamy G, Miller N, Tanguay R, Soroceanu A, Nevin J, Bourassa-Moreau E, Dvorak M, Fisher C, Paquette S, Kwon B, Dea N, Ailon T, Charest-Morin R, Street J, Hindi M, Kwon B, Dvorak M, Ailon T, Paquette S, Fisher C, Charest-Morin R, Dea N, Street J, Finkelstein J, Bowes J, Ford M, Yee A, Soever L, Rachevitz M, Bigness A, Robertson S, Wilson R, Wong W, Nugent J, Frantzeskos S, Duffy M, Rampersaud R, Marathe N, Agarwal R, Bailey CS, Paquet J, Dea N, Goytan M, McIntosh G, Street J, Fisher C, Jacobs B, Johnson M, Paquet J, Hall H, Bailey C, Christie S, Nataraj A, Manson N, Phan P, Rampersaud R, Thomas K, McIntosh G, Abraham E, Glennie A, Jarzem P, Ahn H, Blanchard J, Hogan G, Kelly A, Charest-Morin R, Tohidi M, Hopman W, Yen D, Parent S, Miyanji F, Murphy J, El-Hawary R, Lebel D, Zeller R, Reda L, Dodds M, Lebel D, Zeller R, Zeller R, Marathe N, Bhosale S, Raj A, Marathe N, Goyal V, Theologis A, Witiw C, Fehlings M, Morash K, Yaszay B, Andras L, Sturm P, Sponseller P, El-Hawary R, Swamy G, Jacobs WB, Bouchard J, Cho R, Manson NA, Rampersaud YR, Paquet J, Bailey CS, Johnson M, Attabib N, Fisher CG, McIntosh G, Thomas KC, Bigney E, Richardson E, Alugo T, El-Mughayyar D, Vandewint A, Manson N, Abraham E, Attabib N, Prostko R, Cheng B, Haring K, Fischer M, Bourget-Murray J, Sridharan S, Frederick A, Johnston K, Edwards B, Nicholls F, Soroceanu A, Bouchard J, Shedid D, Al-Shakfa F, Shen J, Boubez G, Yuh SJ, Wang Z, Sundararajan K, Perruccio A, Coyte P, Bombardier C, Bloom J, Hawke C, Haroon N, Inman R, Rampersaud YR, Hebert J, Abraham E, Vandewint A, Bigney E, Richardson E, El-Mughayyar D, Attabib N, Small C, Manson N, Zhang H, Beresford-Cleary N, Street J, Wilson D, Oxland T, Richard-Denis A, Jean S, Bourassa-Moreau É, Fleury J, Beauchamp-Vien G, Bégin J, Mac-Thiong JM, Boudier-Revéret M, Majdalani C, Truong VT, Wang Z, Shedid D, Najjar A, Yuh SJ, Boubez G, Sebaaly A, McIntosh G, Ailon T, Dea N, Fisher C, Charest-Morin R, Lebel D, Rocos B, Zabjek K, Zeller R, Zabjek K, Rocos B, Lebel D, Zeller R, Gee A, Schneider N, Kanawati A, Schemitsch E, Bailey C, Rasoulinejad P, Zdero R, Schneider N, Gee A, Kanawati A, Zdero R, Bailey C, Rasoulinejad P, Lohkamp LN, Fehlings M, Abraham E, Vandewint A, Bigney E, Hebert J, Richardson E, El-Mughayyar D, Chorney J, El-Hawary R, Manson N, Wai E, Phan P, Kingwell S, Tierney S, Stratton A, AlDuwaisan A, Moravek D, Wai E, Kingwell S, Stratton A, Phan P, Devries Z, Barrowman N, Smit K, Tice A, Devries Z, Barrowman N, Smit K, Tice A, Sundararajan K, Rampersaud YR, Oitment C, Wunder J, Ferguson P, Rampersaud R, Rampersaud R, Rampersaud R, Ailon T, Dvorak M, Kwon B, Paquette S, Charest-Morin R, Dea N, Fisher C, Street J, Bailey C, Casha S, Glennie A, Fox R, McIntosh G, Yee A, Fisher C, Perruccio A, Perruccio A, Rampersaud YR, Mac-Thiong JM, Richard-Denis A, Gee A, Kanawati A, Rasoulinejad P, Zdero R, Bailey C, Gee A, Kanawati A, Rasoulinejad P, Zdero R, Bailey C, Klein G, Emmenegger U, Finkelstein J, Lyons F, Whyne C, Hardisty M, Millgram M, Guyer R, Harel R, Ashkenazi E, Dvorak M, Fisher C, Paquette S, Street J, Dea N, Ailon T, Charest-Morin R, Kwon B, Millgram M, Guyer R, Le Huec JC, Ashkenazi E, Millgram M, Guyer R, Harel R, Kutz S, Ashkenazi E, Parsons J, Bailey CS, Dhaliwal P, Fourney DR, Noonan V, Mac-Thiong JM, Beausejour M, Sassine S, Joncas J, Barchi S, Le May S, Cobetto N, Fortin C, Carl-Éric A, Parent S, Labelle H, Bailey C, Fisher C, Rampersaud R, Glennie A, Manson N, Bigney E, Vandewint A, Hebert J, El-Mughayyar D, Richardson E, Ghallab N, Flood M, Attabib N, Abraham E, Swamy G, Nicholls F, Thomas K, Jacobs WB, Soroceanu A, Evaniew N, Stevens M, Dunning C, Oxner W, Glennie A, Dandurand C, Paquette S, Kwon B, Ailon T, Dvorak M, Dea N, Charest-Morin R, Fisher C, Street J, Kim D, Lebel DE, Jarvis J, Tice A, Smit K, Campbell F, Mashida M, Isaac L, Bath N, Stocki D, Levin D, Koyle M, Ruskin D, Stinson J, Ailon T, Dea N, Fisher C, Evaniew N, Soroceanu A, Nicholls F, Jacobs WB, Thomas K, Cho R, Lewkonia P, Swamy G, Lasry O, Ailon T, Zamani N, Rampersaud R, Rasoulinejad P. 2021 Canadian Spine Society Abstracts. Can J Surg 2021; 64:S1-S36. [PMID: 34296831 PMCID: PMC8410468 DOI: 10.1503/cjs.012621] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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Glennie RA, Canizares M, Perruccio AV, Abraham E, Nicholls F, Nataraj A, Phan P, Attabib N, Johnson MG, Richardson E, McIntosh G, Ahn H, Fisher CG, Manson N, Thomas K, Rampersaud YR. The impact of pathoanatomical diagnosis on elective spine surgery patient expectations: a Canadian Spine Outcomes and Research Network study. J Neurosurg Spine 2021:1-8. [PMID: 34020418 DOI: 10.3171/2020.11.spine201490] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/27/2020] [Accepted: 11/19/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Patients undergoing spine surgery generally have high expectations for improvement postoperatively. Little is known about how these expectations are affected by the diagnosis. The purpose of this study was to examine whether preoperative expectations differ based on diagnostic pathoanatomical patterns in elective spine surgery patients. METHODS Patients with common degenerative cervical/lumbar pathology (lumbar/cervical stenosis, lumbar spondylolisthesis, and cervical/lumbar disc herniation) who had given their consent for surgery were analyzed using the Canadian Spine Outcomes and Research Network (CSORN). Patients reported the changes they expected to experience postoperatively in relation to 7 separate items using a modified version of the North American Spine Society spine questionnaire. Patients were also asked about the most important item that would make them consider the surgery a success. Sociodemographic, lifestyle, and clinical variables were also collected. RESULTS There were 3868 eligible patients identified within the network for analysis. Patients with lumbar disc herniation had higher expectations for relief of leg pain compared with stenosis and lumbar degenerative spondylolisthesis cohorts within the univariate analysis. Cervical stenosis (myelopathy) patients were more likely to rank general physical capacity as their most important expectation from spine surgery. The multinomial regression analysis showed that cervical myelopathy patients have lower expectations for relief of arm or neck pain from surgery (OR 0.54, 0.34-0.88; p < 0.05). Patient factors, including age, symptoms (pain, disability, depression), work status, and lifestyle factors, were significantly associated with expectation, whereas the diagnoses were not. CONCLUSIONS Patients with degenerative spinal conditions consenting for spine surgery have high expectations for improvement in all realms of their daily lives. With the exception of patients with cervical myelopathy, patient symptoms rather than diagnoses had a more substantial impact on the dimensions in which patients expected to improve or their most important expected change. Determination of patient expectation should be individualized and not biased by pathoanatomical diagnosis.
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Affiliation(s)
- R Andrew Glennie
- 1Department of Surgery, Division of Orthopedics, Dalhousie University, Halifax, Nova Scotia
| | - Mayilee Canizares
- 2The Arthritis Program, Krembil Research Institute, University Health Network, Toronto, Ontario
| | - Anthony V Perruccio
- 2The Arthritis Program, Krembil Research Institute, University Health Network, Toronto, Ontario
| | - Edward Abraham
- 3Department of Surgery, Dalhousie University.,11Canada East Spine Centre; and
| | - Fred Nicholls
- 4Department of Surgery, University of Calgary, Alberta
| | - Andrew Nataraj
- 5Division of Neurosurgery, Department of Surgery, University of Alberta, Edmonton, Alberta
| | | | - Najmedden Attabib
- 3Department of Surgery, Dalhousie University.,12Department of Neurosurgery, Saint John Regional Hospital, Saint John, New Brunswick
| | - Michael G Johnson
- 7Section of Orthopaedic Surgery, University of Manitoba, Winnipeg, Manitoba
| | - Eden Richardson
- 8Canadian Spine Outcomes and Research Network.,11Canada East Spine Centre; and
| | | | - Henry Ahn
- 9Department of Surgery, University of Toronto, Toronto, Ontario; and
| | - Charles G Fisher
- 10Combined Neurosurgical and Orthopedic Spine Program, Department of Orthopaedic Surgery, University of British Columbia, Vancouver, British Columbia, Canada
| | - Neil Manson
- 3Department of Surgery, Dalhousie University.,11Canada East Spine Centre; and
| | | | - Y Raja Rampersaud
- 1Department of Surgery, Division of Orthopedics, Dalhousie University, Halifax, Nova Scotia.,9Department of Surgery, University of Toronto, Toronto, Ontario; and
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Aoude A, Litowski M, Aldebeyan S, Fisher C, Hall H, Manson N, Bailey CS, Ahn H, Abraham E, Nataraj A, Paquet J, Stratton A, Christie S, Cadotte D, Nicholls F, Soroceanu A, Rampersaud YR, Thomas KC. A Comparison of Patient and Surgeon Expectations of Spine Surgical Outcomes. Global Spine J 2021; 11:331-337. [PMID: 32875885 PMCID: PMC8013940 DOI: 10.1177/2192568220907603] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
Abstract
STUDY DESIGN Ambispective cohort study. OBJECTIVE Limited data exists comparing surgeon and patient expectations of outcome following spine surgery. The objective of this study was to elicit whether any differences exist between patient and surgeon expectations for common spine surgeries. METHODS Ten common age-appropriate clinical scenarios were generated and sent to Canadian spine surgeons to determine surgeon expectations for standard spine surgeries. Patients in the Canadian Spine Outcomes and Research Network (CSORN) registry matching the clinical scenarios were identified. Aggregated patient expectations were compared with surgeon responses for each scenario. A χ2 analysis was then completed to determine discrepancies between surgeon and patient expectations for each scenario. RESULTS A total of 51 Canadian spine surgeons completed the survey on surgical expectations. A total of 919 patients from multiple centers were identified within the CSORN database that matched the clinical scenarios. Our results demonstrated that patients tend to be more optimistic about the expected outcomes of surgery compared with the treating surgeon. The majority of patients in all clinical scenarios anticipated improvement in back or neck pain after surgery, which differed from surgeon expectations. Results also highlighted the effect of patient age on both patient and surgeon expectations. Discrepancies between patient and surgeon expectations were higher for older patients. CONCLUSION We present data on patient and surgeon expectations for spine surgeries and show that differences exist particularly concerning the improvement of neck or back pain. Patient age plays a role in the agreement between the treating physicians and patients in regard to surgical expectations. The reasons for the discrepancies remain unclear.
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Affiliation(s)
- Ahmed Aoude
- University of Calgary, Foothills Medical Centre, Calgary, Alberta, Canada
| | - Madison Litowski
- University of Calgary, Foothills Medical Centre, Calgary, Alberta, Canada
| | - Sultan Aldebeyan
- University of Calgary, Foothills Medical Centre, Calgary, Alberta, Canada,National Neuroscience Institute, Riyadh, Saudi Arabia
| | - Charles Fisher
- University of British Columbia, Vancouver General Hospital, Vancouver, British Columbia, Canada
| | | | - Neil Manson
- Dalhousie University, Halifax, Nova Scotia, Canada,Canada East Spine Centre, Saint John, New Brunswick, Canada
| | | | - Henry Ahn
- University of Toronto, Toronto, Ontario, Canada,St. Michael’s Hospital, Toronto, Ontario, Canada
| | - Edward Abraham
- Dalhousie University, Halifax, Nova Scotia, Canada,Canada East Spine Centre, Saint John, New Brunswick, Canada
| | | | - Jerome Paquet
- CHU de Québec-Université Laval, Laval, Quebec, Canada
| | | | | | - David Cadotte
- University of Calgary, Foothills Medical Centre, Calgary, Alberta, Canada
| | - Fred Nicholls
- University of Calgary, Foothills Medical Centre, Calgary, Alberta, Canada
| | - Alex Soroceanu
- University of Calgary, Foothills Medical Centre, Calgary, Alberta, Canada
| | - Y. Raja Rampersaud
- University of Toronto, Toronto, Ontario, Canada,University Health Network, Krembil Research Institute, Toronto, Ontario, Canada
| | - Kenneth C. Thomas
- University of Calgary, Foothills Medical Centre, Calgary, Alberta, Canada,Kenneth C. Thomas, Foothills Medical Centre, 1403 29th St NW, Calgary, Alberta, Canada T2N 2T9.
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Missiuna P, Shen J, Nahle I, Shen J, Alanazi M, Rutges J, Rocos B, Miyanji F, Lohkamp L, Grootjen L, Hachem L, Aldebeyan S, Machida M, Padhye K, Rushton P, Jentzsch T, Jentzsch T, Lewis S, Passias P, Pierce K, Lewis S, Passias P, Nielsen C, Glennie A, Crawford E, Schneider N, Ayling O, Christie S, Greene R, Singh S, Beauchamp-Chalifour P, Balasuberamaniam P, Singh S, Mercure-Cyr R, Wilson J, Evaniew N, Martin A, Rienmueller A, Martin A, Karim M, Martin A, Cheung A, Badhiwala J, Diotalevi L, Jaja B, Fallah N, Badhiwala J, Wasim A, Manson N, Lasry O, Crawford E, Brown A, MacLean MA, Khan O, Badhiwala J, Odai KG, Bailly N, Khan O, Evaniew N, Yamamoto S, Singh M, Kashigar A, Persad A, Fernandes RJR, Malakoutian M, Ahuja C, Morris S, Stukas S, Chen T, Babadagli E, Xu M, Nater A, Oitment C, Karim M, Aziz M, Pahuta M, Versteeg A, Sundararajan K, Tanguay R, Stratton A, Cushnie D, Correale M, Sadiq I, Badhiwala J, Passias P, Badhiwala J, McGregor S, Passias P, Badhiwala J, Chen T, Singh S, Ayling O, Bond M, Rienmueller A, Chen T, Lasry O, Lyons F, Ahmed U, Inglis T, Waheed Z, Wilson J, Nater A, Pahuta M, Klein G, McKibben N, Kassam F, Clement A, Kanawati A, Shaikh N, Kanawati A, Alshammari A, Kanawati A, Yamamoto S, Hamilton K, Huschi Z, Peng YN, Huschi Z, Filgueira É, Goulet J, Kashigar A, Chen T, Hadgaonkar S, MacLean M, Chen T, Kerr HL, Meagher J, Wilson J, Stevens M, Rocos B, Pai A, Kingwell S, Thibault J, Touchette C, Moskven E, Greene R, DeVries Z, Sarraj M, Bosakhar B, Thornley P, Donnellan J, Kishta W, Darby P, Nahle I, Alzakri A, Roy-Beaudry M, Joncas J, Turgeon I, Parent S, Shen J, Alzakri A, Roy-Beaudry M, Joncas J, Turgeon I, Parent S, Samson N, Lamontagne-Proulx J, Soulet D, Tremblay Y, Praud JP, Parent S, Parent S, Gross D, Renkens J, Schlösser T, Stadhouder A, Kruyt M, Mostert A, Tee J, de Klerk L, De Kleuver M, Castelein R, Zeller R, Lewis S, Tan T, Lebel D, Rushton P, Petcharaporn M, Samdani A, Newton P, Marks M, Drake J, Dirks P, Rutka J, Kulkarni A, Ibrahim G, Taylor M, Dewan M, Zeller R, Donze S, Damen L, Rutges J, Hokken-Koelega A, Mathieu F, Lamberti-Pasculi M, Hanak B, Zeller R, Kulkarni A, Drake J, Ibrahim G, Rushton P, Ghag R, Miyanji F, Zeller R, Lewis S, Lebel D, Peiro-Garcia A, Benavides B, Parsons D, Ferri-de-Barros F, Aldebeyan S, Ghag R, Miyanji F, Kutschke L, Laux C, Kabelitz M, Schüpbach R, Böni T, Farshad M, Nielsen C, Lewis S, Lenke L, Shaffrey C, Cheung K, Berven S, Qiu Y, Matsuyama Y, Pellisé-Urquiza F, Polly D, Sembrano J, Dahl B, Kelly M, de Kleuver M, Spruit M, Alanay A, Alas H, Kim HJ, Lafage R, Soroceanu A, Hockley A, Ames C, Klineberg E, Burton D, Diebo B, Bess S, Line B, Shaffrey C, Smith J, Schwab F, Lafage V, Passias P, Lafage R, Soroceanu A, Hockley A, Line B, Klineberg E, Bess S, Protopsaltis T, Shaffrey C, Schwab F, Scheer J, Smith J, Lafage V, Ames C, Lenke L, Shaffrey C, Cheung K, Berven S, Qiu Y, Matsuyama Y, Pellisé-Urquiza F, Polly D, Sembrano J, Dahl B, Kelly M, de Kleuver M, Spruit M, Alanay A, Bortz C, Pierce K, Alas H, Brown A, Soroceanu A, Hockley A, Vira S, Ahmad W, Naessig S, Diebo B, Raman T, Protopsaltis T, Buckland A, Gerling M, Lafage R, Lafage V, Lewis S, Lenke L, Shaffrey C, Cheung K, Berven S, Qiu Y, Matsuyama Y, Pellisé-Urquiza F, Polly D, Sembrano J, Dahl B, Kelly M, de Kleuver M, Spruit M, Alanay A, Bailey C, Rampersaud R, Fisher C, Chen T, McIntosh G, Rampersaud R, Karim M, Urquhart J, Fisher C, Street J, Dvorak M, Paquette S, Charest-Morin R, Ailon T, Glennie A, Manson N, Rampersaud R, Thomas K, Rasoulinejad P, Bailey C, Ailon T, Fisher C, Greene R, Glennie A, Duquette D, LeBlanc D, Martell B, Schmidt M, Christie S, Wong DBT, Di Paola C, Ailon T, Charest-Morin R, Dea N, Dvorak M, Fisher C, Kwon B, Paquette S, Street J, Street J, Flexman A, Charest-Morin R, Wasim A, Schwartz C, Stark R, Shrikumar M, Finkelstein J, Gara A, Banaszek D, Wong T, Ailon T, Bryce E, Charest-Morin R, Dea N, Dvorak M, Fisher C, Kwon B, Paquette S, Street J, Persad A, Spiess M, Wu A, Woo A, Hnenny L, Fourney D, Joshi H, Khan O, Badhiwala J, Rampersaud R, Lewis S, Massicotte E, Fehlings M, Cadotte D, Bailey C, Christie S, Dea N, Fisher C, Paquet J, Soroceanu A, Thomas KC, Rampersaud YR, Wilson J, Manson N, Johnson M, Hall H, McIntosh G, Jacobs B, Kalsi-Ryan S, Akbar MA, Badhiwala J, Wilson J, Tetreault L, Nouri A, Rienmuller A, Massicotte E, Fehlings M, Kalsi-Ryan S, Riehm L, Martin A, Badhiwala J, Akbar M, Massicotte E, Fehlings M, Kalsi-Ryan S, Akbar MA, Badhiwala J, Wilson J, Tetreault L, Nouri A, Rienmuller A, Massicotte E, Fehlings M, Jacobs B, Johnson M, Bailey C, Christie S, Paquet J, Nataraj A, Cadotte D, Wilson J, Manson N, Hall H, Thomas K, Rampersaud R, McIntosh G, Fisher C, Dea N, Wilson J, Jentzsch T, Jiang F, Badhiwala J, Moghaddamjou A, Akbar MA, Nater A, Rienmuller A, Ganau M, Massicotte E, Fehlings M, Tu L, Manouchehri N, Kim KT, So K, Webster M, Fisk S, Tigchelaar S, Dalkilic S, Sayre E, Streijger F, Macnab A, Kwon B, Shadgan B, Wilson J, Fehlings M, Bailly N, Wagnac E, Mac-Thiong JM, Goulet J, Petit Y, Badhiwala J, Grossman R, Geisler F, Fehlings M, Wilson J, Rivers C, Kwon B, Waheed Z, Buenaventura J, Humphreys S, Noonan V, Evaniew N, Dvorak M, Wilson J, Fehlings M, Shrikumar M, Balasuberamaniam P, Rapkin B, Schwartz C, Stark R, Finkelstein J, Bigney E, Darling M, Richardson E, El-Mughayyar D, Abraham E, Street J, Radomski L, Rampersaud R, Pierce K, Bortz C, Alas H, Naessig S, Ahmad W, Vira S, Diebo B, Sciubba D, Hassanzadeh H, Hockley A, Soroceanu A, Protopsaltis T, Buckland A, Passias P, Greene R, Christie SD, Badhiwala J, Fehlings M, Witiw C, Wilson J, Fehlings M, Nessek H, Wai E, Phan P, Diotalevi L, Beauséjour MH, Wagnac E, Mac-Thiong JM, Petit Y, Badhiwala J, Fehlings M, Mazlouman S, Belley-Côté E, Jacobs B, Kwon B, Malakoutian M, Theret M, Street J, Brown S, Rossi F, Oxland T, Singh P, Chandra S, Laratta J, Carreon L, Bisson E, Ghogawala Z, Yew A, Mkorombindo T, Mummaneni P, Glassman S, Kindrachuk M, Hnenny L, Wu A, Norton J, Fourney D, Gee A, Kerr HL, Kanawati A, Zdero R, Gurr K, Bailey C, Rasoulinejad P, Yamamoto S, Sadaram S, Speidel J, Liu J, Street J, Brown S, Oxland T, Khazaei M, Walji I, Dadabhoy M, Gulati N, Aiyar N, Ostmeier S, Hasan A, Senthilnathan V, Punjani N, Yao Y, Yue S, Ozdemir G, Lou Z, Luong W, Post A, Tootsi A, Chan P, Fehlings M, Yung A, George S, Prevost V, Bauman A, Kozlowski P, Samadi F, Fournier C, Parker L, Dong K, Streijger F, Moore W, Laule C, Kwon B, Gill J, Cooper J, Dong K, Streijger F, Street J, Paquette S, Ailon T, Charest-Morin R, Fisher C, Dvorak M, Dhall S, Mac-Thiong JM, Parent S, Bailey C, Christie S, Wellington C, Kwon B, Crawford E, Zhang Y, Hardisty M, Finkelstein J, Kureshi N, Julien L, Abidi R, Christie S, Parashin S, Gascoyne T, Goytan M, Chuang J, Liu K, Quraishi N, Pasku D, Wilson J, Fehlings M, Bozzo A, Reinmuller A, Martin A, Hananel SY, Thornley P, Gazendam A, Aoude A, Nielsen C, Rampersaud R, Dea N, Versteeg A, Sahgal A, Verlaan JJ, Morin RC, Rhines L, Sciubba D, Schuster J, Weber M, Lazary A, Fehlings M, Clarke M, Arnold P, Boriani S, Laufer I, Gokaslan Z, Fisher C, Rosenzweig D, Weber M, Fisk F, Versteeg A, Fisher C, Sahgal A, Gokaslan Z, Rhines L, Boriani S, Bettegowda C, Dea N, Gal R, Charest-Morin R, Verlaan JJ, Verkooijen L, Fisher C, Perruccio A, Rampersaud R, Eckenswiller D, Yu A, Klassen K, Lewkonia P, Thomas K, Jacobs B, Miller N, Swamy G, Yang M, Soroceanu A, Phan P, Wai E, Kingwell S, Moravek D, Tierney S, Street J, Sundararajan K, Bosma R, Faclier G, Di Renna T, Rampersaud R, Frederick A, Kassam F, Nicholls F, Swamy G, Lewkonia P, Thomas K, Jacobs B, Miller N, Tanguay R, Soroceanu A, Platt A, Traynelis V, Witiw C, Horn S, Weiser-Horwitz S, Bortz C, Segreto F, Pierce K, Lafage R, Hockley A, Vira S, Lafage V, Witiw C, Wilson J, Nassiri F, da Costa L, Nathens A, Fehlings M, Jacobs B, Alas H, Pierce K, Brown A, Bortz C, Hockley A, Soroceanu A, Vira S, Naessig S, Ahmad W, Lafage R, Lafage V, Witiw C, Wilson J, da Costa L, Nathens A, Fehlings M, Crawford E, McIntosh G, Rampersaud R, Fisher C, Manson N, Thomas K, Hall H, Rampersaud R, Dea N, McIntosh G, Charest-Morin R, Investigators CSORN, Ailon T, Fisher C, Evaniew N, Aldebeyan S, Thomas K, Sundararajan K, Oitment C, Lewis S, Perruccio A, Rampersaud R, Christie S, Yee A, Fisher C, Jarzem P, Roy JF, Bouchard J, Evans D, Kwon B, Splawinski J, Warren D, Street J, Morris S, Costello J, Farrell M, Humphreys S, Kurban D, Rivers C, Jeffrey M, Juutilainen S, Casha S, Christie S, Clarke T, Drew B, Ethans K, Fehlings M, Fox R, Linassi G, Marion T, O’Connell C, Paquet J, Reid J, Scott L, Fourney D, Schouten R, Rivers C, Chen M, Nunnerley J, Croot T, Young L, Patel A, Dvorak M, Kwon B, Rivers C, Buenaventura J, Humphreys S, Noonan V, Fallah N, Evaniew N, Dvorak M, Cronin S, Badhiwala J, Ginsberg H, Fehlings M, Kwon B, Jaglal S, Wilson J, Fehlings M, Fisk F, Versteeg A, Fisher C, Sahgal A, Gokaslan Z, Rhines L, Boriani S, Bettegowda C, Dea N, Martel A, Sahgal A, Finkelstein J, Whyne C, Hardisty M, Baksh N, Nguyen T, Brown S, Jaboin J, Lin C, Yach J, Hardisty M, Whyne C, Fernandez R, Gee A, Urquhart J, Bailey C, Rasoulinejad P, Zhang H, Shewchuk J, Street J, Wilson D, Oxland T, Fernandez R, Gee A, Urquhart J, Bailey C, Rasoulinejad P, Algarni N, Aljarboa N, Jarzem P, Fernandez R, Gee A, Urquhart J, Bailey C, Rasoulinejad P, Whyte T, Van Toen C, Melnyk A, Shewchuk J, Street J, Cripton P, Oxland T, Avila M, Hurlbert RJ, Neuburger L, Ahmed SU, Cheng Y, Fourney D, Hsu HC, Kao CH, Neuburger L, Ahmed SU, Cheng Y, Fourney D, Meves R, de Oliveira AI, da Silva HC, Richard-Denis A, Petit Y, Diotalevi L, Mac-Thiong JM, Laratta J, Bisson E, Carreon L, Yew A, Mkorombindo T, Glassman S, Christie S, Bouchard J, Fisher C, Roy JF, Yee A, Jarzem P, Khurjekar K, Kothari A, Zawar A, Sanchetui P, Shyam A, Touchette C, Han JH, Christie S, Pickett G, Yee A, Bouchard J, Christie S, Fisher C, Jarzem P, Roy JF, Hashem L, Urquhart J, Rasoulinejad P, Gurr K, Siddiqi F, Bailey C, Attabib N, Bigney E, Richardson E, El-Mughayyar D, Darling M, Manson N, Abraham E, Badhiwala J, Jiang F, Wilson J, Fehlings M, Dunning C, Oxner W, Stewart S, Glennie A, Hutchinson J, Oxland T, Zhang H, Shewchuk J, Wilson D, Street J, Wilk S, Wai E, Phan P, Stratton A, Mohammed S, Tsai E, Alkerayf F, Michalowski W, Phan P, Wai E, Hoda M, MacLean M, Brunette-Clément T, Abduljabba F, Weber M, Fourney D, Charest-Morin R, Flexman A, Street J, Frey M, Mackey S, De Carvalho D, Barrowman N, Smit K, Tice A, Mervitz D, Jarvis J, Kingwell S. Canadian Spine SocietyPresentation CPSS1: Spinal insufficiency fracture in the geriatric pediatric spinePresentation CPSS2: The clinical significance of tether breakages in anterior vertebral body growth modulation: a 2-year postoperative analysisPresentation CPSS3: Anterior vertebral body growth modulation for idiopathic scoliosis: early, mid-term and late complicationsPresentation CPSS4: Ovine model of congenital chest wall and spine deformity with alterations of respiratory mechanics: follow-up from birth to 3 monthsPresentation CPSS5: Test–retest reliability and minimum detectable change of the English translation of the Italian Spine Youth Quality of Life questionnaire in adolescents with idiopathic scoliosisPresentation B1. Abstract 31: Incidence of delayed spinal cord injury in pediatric spine deformity surgery seems to be higher than previously assumedPresentation B2. Abstract 155: What is the optimal surgical method for achieving successful symptom relief in pediatric high-grade spondylolisthesis?Presentation B3. Abstract 47: Vertebral body tethering: Truly motion preserving or rather limiting?Presentation B4. Abstract 180: Fusion rates in pediatric patients after posterior cervical spine instrumentationPresentation B5. Abstract 102: Effects of 8 years of growth hormone treatment on the onset and progression of scoliosis in children with Prader–Willi syndromePresentation B6. Abstract 144: Klippel–Feil syndrome: clinical phenotypes associated with surgical treatmentPresentation B7. Abstract 123: Anterior release for idiopathic scoliosis: Is it necessary for curve correction?Presentation B8. Abstract 62: Severe scoliosis: Do we know a better way? A retrospective comparative studyPresentation B9. Abstract 21: Intraoperative skull femoral traction in adolescent idiopathic scoliosis: the correlation of traction with side-bending radiographsPresentation B10. Abstract 147: What is the effect of intraoperative halo-femoral traction on correction of adolescent idiopathic scoliosis?Presentation B11. Abstract 174: Extreme long-term outcome of surgically versus non-surgically treated patients with adolescent idiopathic scoliosisPresentation B12. Abstract 172: The influence of multilevel spinal deformity surgery on the clinical outcome in the elderly: a prospective, observational, multicentre studyPresentation B13. Abstract 49: Demographics of a prospective evaluation of elderly deformity surgery: a prospective international observational multicentre studyPresentation B14. Abstract 119: Timing of conversion to cervical malalignment and proximal junctional kyphosis following surgical correction of adult spinal deformityPresentation B15. Abstract 44: Prioritization of realignment associated with superior clinical outcomes for surgical cervical deformity patientsPresentation B16. Abstract 50: Outcome of multilevel spinal deformity surgery in patients over 60 years of age: a multicentre international prospective studyPresentation B17. Abstract 122: A simpler, modified frailty index weighted by complication occurrence correlates to pain and disability for adult spinal deformity patientsPresentation B18. Abstract 75: Change in Oswestry Disability Index at 24 months following multilevel spinal deformity surgery in patients over 60 years of age: a multicentre international prospective studyPresentation C19. Abstract 19: A prospective cohort study evaluating trends in the surgical treatment of degenerative spondylolisthesis in Canada and the utility of a novel surgical decision aidPresentation C20. Abstract 154: Decompression compared with decompression and fusion for degenerative lumbar spondylolisthesis: a Canadian Spine Outcomes and Research Network (CSORN) studyPresentation C21. Abstract ID 77: Lumbar degenerative spondylolisthesis: factors impacting decision to fusePresentation C22. Abstract 27: Patient-reported outcomes following surgery for lumbar disc herniation: comparison of a universal and multitier health care systemPresentation C23. Abstract 151: Do patients with recurrent lumbar disc herniations fair worse with discectomy than primary operations? A retrospective analysis from the Canadian Spine Outcomes and Research NetworkPresentation C24. Abstract 136: A province-wide assessment of the appropriateness of lumbar spine MRIPresentation D25. Abstract 32: Surgical site infection reduction — a 10-year quality improvement journeyPresentation D26. Abstract 34: The impact of frailty on patient-reported outcome measures following elective thoraco-lumbar spine surgeryPresentation D27. Abstract 8: Moving toward better health: exercise practice is associated with improved outcomes after spine surgeryPresentation D28. Abstract 33: Preoperative decolonization does not adversely affect the microbiologic spectrum of spine surgical site infectionPresentation D29. Abstract 61: Feedback: reducing after-hours spine cases using an encrypted messaging systemPresentation D30. Abstract 177: Complex spine surgery is safe and effective in the extremely elderly age group: results from an ambispective study of 722 patients over 75 years old from a single institutionPresentation E31. Abstract 38: Clinical predictors of achieving minimal clinically important difference after surgery for cervical spondylotic myelopathy: an external validation study from the Canadian Spine Outcomes and Research NetworkPresentation E32. Abstract 66: The natural history of degenerative cervical myelopathy: an ambispective longitudinal cohort studyPresentation E33. Abstract 159: Quantitative assessment of gait characteristics in degenerative cervical myelopathy (DCM): a prospective studyPresentation E34. Abstract 130: Prognostic factors in degenerative cervical myelopathy (DCM) for patients managed operatively and nonoperativelyPresentation E35. Abstract 175: Efficacy of surgical decompression in patients with cervical spondylotic myelopathy: results of a Canadian prospective multicentre studyPresentation E36. Abstract 67: Interobserver reliability of the modified Japanese Orthopedic Association (mJOA) score in degenerative cervical myelopathyPresentation F37. Abstract 128: Continuous optical monitoring of spinal cord hemodynamics during the first 7 days after injury in a porcine model of acute spinal cord injuryPresentation F38. Abstract 106: Development of a prediction model for central cord syndrome: an evaluation of motor recovery and the effectiveness of early surgery in a prospective, multicentre cohortPresentation F39. Abstract 135: Spinal cord dynamics under different clinical configurations of thoracolumbar burst fractures through numerical simulationsPresentation F40. Abstract 60: Predicting the heterogeneity of outcome following sensorimotor complete cervical spinal cord injury: trajectory-based analysis of 655 prospectively enrolled patientsPresentation F41. Abstract 167: Mortality in the year following discharge to the community from inpatient care for acute traumatic spinal cord injury: When and why?Presentation F42. Abstract 104: A novel method to classify patients with cervical incomplete spinal cord injury based on potential for recovery: a group-based trajectory analysis using prospective, multicentre data from over 800 patientsPresentation G43. Abstract 7: Responsiveness of standard spine outcome tools: Do they measure up?Presentation G44. Abstract 142: Patient outcomes: important psychological measuresPresentation G45. Abstract 84: Accuracy of surveillance for surgical site infections after spine surgery: a Bayesian latent class analysis using 4 independent data sourcesPresentation G46. Abstract 169: Econometric modelling: development of a surgical cost calculator for degenerative conditions of the lumbar spinePresentation G47. Abstract 124: The economic impact of nonreimbursable events in open, minimally invasive and robot-assisted lumbar fusion surgeryPresentation G48. Abstract 164: Are there sex differences in preoperative health status and health care delivery for patients undergoing scheduled lumbar surgery? An analysis from the Canadian Spine Outcomes and Research NetworkPresentation H49. Abstract 41: Patient phenotypes associated with functional outcomes after spinal cord injury: a principal component analysis in 1119 patientsPresentation H50. Abstract 103: Early versus late surgical decompression for acute traumatic spinal cord injury: a pooled analysis of prospective, multicentre data in 1548 patientsPresentation H51. Abstract 79: Clinical outcome correlation of diffusion tensor imaging and magnetic resonance imaging values: a systematic reviewPresentation H52. Abstract 137: A numerical study on the pathogenesis of central cord syndromePresentation H53. Abstract 42: Feasibility and utility of machine learning in prediction of bladder outcomes after spinal cord injury: analysis of 1250 patients from the European Multicenter Study about Spinal Cord Injury (EMSCI) registryPresentation H54. Abstract 18: Interventions to optimize spinal cord perfusion in patients with acute traumatic spinal cord injuries: a systematic reviewPresentation i55. Abstract 55: The effect of posterior lumbar spinal surgery on passive stiffness of rat paraspinal muscles 13 weeks post-surgeryPresentation i56. Abstract 43: A computed tomographic based morphometric analysis of the axis in adult populationPresentation i57. Abstract 92: Is there value to flexion–extension x-rays for degenerative spondylolisthesis? A multicentre retrospective studyPresentation i58. Abstract 98: The novel “7/20 EMG protocol” in combination with O-arm image-guided navigation for accurate lumbar pedicle placement while minimizing diagnostic radiation exposurePresentation i59. Abstract 148: Comparative biomechanical study of 2 types of transdiscal fixation implants for high-grade L5/S1 spine spondylolisthesis in a porcine modelPresentation i60. Abstract 85: The effects of fibre bundle size and vertebral level on passive stiffness of the lumbar paraspinal muscles in a rat modelPresentation J61. Abstract 157: A self-assembling peptide biomaterial to enhance human neural stem cell-based regeneration of the injured spinal cordPresentation J62. Abstract 162: Measuring demyelination, axonal loss and inflammation after human spinal cord injury with quantitative magnetic resonance imaging and histopathologyPresentation J63. Abstract 179: Characterization of ubiquitin C-terminal hydrolase L1 (UCH-L1) as a fluid biomarker of human traumatic spinal cord injuryPresentation J64. Abstract 13: Utility and role of virtual reality based simulation models in spinal decompression trainingPresentation J65. Abstract 160: Investigating the determinants for predicting surgical patient outcomes through the application of machine learning methodsPresentation J66. Abstract 143: Comparison of screw design and technique on cervical lateral mass screw fixationPresentation K67. Abstract 57: Development of clinical prognostic models for postoperative survival and quality of life in patients with surgically treated metastatic epidural spinal cord compressionPresentation K68. Abstract 170: Sarcomas of the spine: a 20-year survey of disease and treatment strategy in Ontario, CanadaPresentation K69. Abstract 15: Metastatic spine disease: Should patients with short life expectancy be denied surgical care? An international retrospective cohort studyPresentation K70. Abstract 29: Nanoparticle-functionalized polymethyl methacrylate bone cement for sustained chemotherapeutic drug deliveryPresentation K71. Abstract 90: Development of the Spine Oncology Study Group Outcomes Questionnaire – 8 Domain (SOSGOQ-8D)Presentation K72. Abstract 6: Treatment expectations of patients with spinal metastases: What do we tell our patients?Presentation L73. Abstract 48: Factors related to risk of opioid abuse in primary care patients with low back painPresentation L74. Abstract 65: QI/QA of a transitional outpatient pain program for spinePresentation L75. Abstract 168: The effect of preoperative opioid use on hospital length of stay in patients undergoing elective spine surgeryPresentation L76. Abstract 163: Disability or pain: Which best predicts patient satisfaction with surgical outcome? A Canadian Spine Outcomes and Research Network (CSORN) studyPresentation L77. Abstract 58: Rapid access to interventional pain management for lumbar nerve root pain through collaborative interprofessional provider networksPresentation L78. Abstract 63: Chronic preoperative opioid use associated with higher perioperative resource utilization and complications in adult spinal deformity patientsPresentation M79. Abstract 108: Cervical disc arthroplasty versus anterior cervical discectomy and fusion: a longitudinal analysis of reoperationsPresentation M80. Abstract 46: Preliminary results of randomized controlled trial investigating the role of psychological distress on cervical spine surgery outcomes: a baseline analysisPresentation M81. Abstract 110: Operative versus nonoperative treatment of geriatric odontoid fractures: a study of North American trauma centresPresentation M82. Abstract 74: Clinical outcome of posterior cervical foraminotomy versus anterior cervical discectomy and fusionPresentation M83. Abstract 45: “Reverse Roussouly”: ratios of cervical to thoracic shape curvature in an adult cervical deformity populationPresentation M84. Abstract 109: Treatment of acute traumatic central cord syndrome: a study of North American trauma centresPresentation N85. Abstract 118: Comparing minimally invasive versus traditional open lumbar decompression and fusion surgery: a Canadian Spine Outcomes and Research Network (CSORN) studyPresentation N86. Abstract 54: Time to return to work after lumbar spine surgeryPresentation N87. Abstract 28: Patient-reported outcomes following surgery for lumbar spinal stenosis: comparison of a universal and multitier health care systemPresentation N88. Abstract 93: Outcomes of surgery in older adults with lumbar spinal stenosisPresentation N89. Abstract 162: Functional objective assessment using the TUG test is a useful tool to evaluate outcome in lumbar spinal stenosisPresentation N90. Abstract 36: A Canadian Spine Outcomes and Research Network (CSORN) matched-cohort study comparing lumbar fusion and disk arthroplastyPresentation o91. Abstract 171: Development of clinical practice guidelines for the management of traumatic spinal column and cord injuries in British Columbia: an approach to standardizing care of spine trauma patientsPresentation o92. Abstract 22: Notes from a small island: stemming the tide of a spinal deluge. The use of encrypted software applications to ensure accountability, quality control and surgical consensus in a national acute adult spinal surgery centrePresentation o93. Abstract 129: Traumatic spinal cord injuries among Aboriginal and non-Aboriginal populations in Canada: an ambispective outcomes studyPresentation o94. Abstract 132: Traumatic spinal cord injury in New Zealand and Canada: a comparative analysisPresentation o95. Abstract 150: Exploring the reasons for readmission following traumatic spinal cord injuryPresentation o96. Abstract 59: Exploring the epidemiology and impact of spinal cord injury in the elderly: a 15-year Canadian population-based cohort studyPresentation P1. Abstract 139: Incidence and management of spinal metastasis in Ontario: a population-based studyPresentation P2. Abstract 91: A general population utility valuation study for the Spine Oncology Study Group Outcomes Questionnaire – 8DPresentation P3. Abstract 158: Metastatic vertebrae segmentation by augmented 3D convolutional neural networkPresentation P4. Abstract 73: Risk factors for failure of radiation therapy for spinal metastasesPresentation P5. Abstract 68: Significance of extracanalicular cement extravasation in thoracolumbar kyphoplastyPresentation P6. Abstract 120: Modelling fracture in osteoblastic vertebraePresentation P7. Abstract 97: The development of novel 2-in-1 patient-specific, 3D-printed laminar osteotomy guides with integrated pedicle screw guidesPresentation P8. Abstract 56: Effect of pelvic retroversion on pelvic geometry and muscle morphometry from upright magnetic resonance imagingPresentation P9. Abstract 161: Anatomic relationship between the accessory process of the lumbar spine and the pedicle screw entry pointPresentation P10. Abstract 20: Novel chair to measure lumbar spine extensors strength in adultsPresentation P11. Abstract 95: Error measurement between human spine, 3D scans, CT-based models, and 3D-printed modelsPresentation P12. Abstract 52: The diagnostic precision of computed tomography for traumatic cervical spine injury: an in vitro investigationPresentation P13. Abstract 94: Epidural abscess causing spinal cord infarctionPresentation P14. Abstract 83: The nerve root sedimentation sign on magnetic resonance imaging is not only correlated with neurogenic claudication: association with all types of leg-dominant mechanical painPresentation P15. Abstract 3: Accuracy of robot-assisted compared with freehand pedicle screw placement in spine surgery: a meta-analysis of randomized controlled trialsPresentation P16. Abstract 82: A positive nerve root sedimentation sign on magnetic resonance imaging is associated with improved surgical outcomes in patients with back dominant painPresentation P17. Abstract 16: Thoracolumbar burst fracture: McCormack load-sharing classification —systematic review and single-arm meta-analysisPresentation P18. Abstract 86: Morphological features of thoracolumbar burst fractures associated with neurologic recovery after thoracolumbar traumatic spinal cord injuryPresentation P19. Abstract 89: Radiographic parameters of listhesis and instability are not associated with health status or clinical outcomes in grade 1 degenerative spondylolisthesisPresentation P20. Abstract 37: Predictive socioeconomic factors following lumbar disk arthroplasty: a Canadian Spine Outcomes and Research Network (CSORN) studyPresentation P21. Abstract 25: Effect of in situ fusion in lumbar spondylolisthesis on clinical outcomes and spino-pelvic sagittal balancingPresentation P22. Abstract 10: Sex differences in the surgical management of lumbar degenerative disease: a systematic reviewPresentation P23. Abstract 35: Two-year results of lumbar disk arthroplasty: a Canadian Spine Outcomes and Research Network (CSORN) studyPresentation P24. Abstract 78: Does disc morphology affect the success of nonoperative treatment of chronic sciatica from a lumbar disc herniation?Presentation P25. Abstract 141: Opioid prescribing patterns: preliminary investigationPresentation P26. Abstract 133: Frailty is a better predictor of complications than age alone after surgical treatment of degenerative cervical myelopathy: an ambispective study of 5107 elderly patients from the National Surgical Quality Improvement Program databasePresentation P27. Abstract 26: Pathway analysis in spine surgery: a model for evaluating length of stayPresentation P29. Abstract 156: Patients with adolescent idiopathic scoliosis (AIS) have different cervical lordosis than the normal populationPresentation P31. Abstract 64: Investigation of thoracic spinal muscle morphology with upright magnetic resonance imagingPresentation P32. Abstract 80: Postoperative complication prediction between spinal surgeons and a machine learning model: a comparative studyPresentation P33. Abstract 81: Is using a simplified procedural classification as accurate as using current procedural terminology codes to predict future complications in spinal surgery?Presentation P34. Abstract 88: Preoperative patient performance status and frailty phenotype as predictive factors of outcome in surgically treated patients with metastatic spinal disease: a systematic literature reviewPresentation P35. Abstract 101: The measurements of frailty and their application to spine surgeryPresentation P36. Abstract 131: The effect of prolonged sitting on muscle reflexes of the low backPresentation P37. Abstract 87: Implementing a rapid discharge pathway for adolescent idiopathic scoliosis in Canada. Can J Surg 2020. [DOI: 10.1503/cjs.014720] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Canizares M, Glennie RA, Perruccio AV, Abraham E, Ahn H, Attabib N, Christie S, Johnson MG, Nataraj A, Nicholls F, Paquet J, Phan P, Rasoulinejad P, Manson N, Hall H, Thomas K, Fisher CG, Rampersaud YR. Erratum to 'Patients' expectations of spine surgery for degenerative conditions: results from the Canadian Spine Outcomes and Research Network (CSORN)'. [Spine J. 2020;20(3):399-408]. Spine J 2020; 20:674. [PMID: 32081566 DOI: 10.1016/j.spinee.2020.02.001] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- M Canizares
- The Arthritis Program, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada.
| | - R A Glennie
- Canadian Spine Outcomes and Research Network, Canada; Dalhousie University, Halifax, Nova Scotia, Canada
| | - A V Perruccio
- The Arthritis Program, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada
| | - E Abraham
- Canadian Spine Outcomes and Research Network, Canada; Dalhousie University, Saint John, New Brunswick, Canada
| | - H Ahn
- Canadian Spine Outcomes and Research Network, Canada; University of Toronto, Toronto, Ontario, Canada
| | - N Attabib
- Canadian Spine Outcomes and Research Network, Canada; Dalhousie University, Saint John, New Brunswick, Canada
| | - S Christie
- Canadian Spine Outcomes and Research Network, Canada; Dalhousie University, Halifax, Nova Scotia, Canada
| | - M G Johnson
- Canadian Spine Outcomes and Research Network, Canada; University of Manitoba, Winnipeg, Manitoba, Canada
| | - A Nataraj
- Canadian Spine Outcomes and Research Network, Canada; University of Alberta, Edmonton, Alberta, Canada
| | - F Nicholls
- Canadian Spine Outcomes and Research Network, Canada; University of Calgary, Calgary, Alberta, Canada
| | - J Paquet
- Canadian Spine Outcomes and Research Network, Canada; Universite Laval, Quebec City, Quebec, Canada
| | - P Phan
- Canadian Spine Outcomes and Research Network, Canada; The Ottawa Hospital - Civic Campus, Ottawa, Ontario, Canada
| | - P Rasoulinejad
- Canadian Spine Outcomes and Research Network, Canada; Western University, London Health Sciences, London, Ontario, Canada
| | - N Manson
- Canadian Spine Outcomes and Research Network, Canada; Dalhousie University, Saint John, New Brunswick, Canada
| | - H Hall
- Canadian Spine Outcomes and Research Network, Canada; University of Toronto, Toronto, Ontario, Canada
| | - K Thomas
- Canadian Spine Outcomes and Research Network, Canada; University of Calgary, Calgary, Alberta, Canada
| | - C G Fisher
- Canadian Spine Outcomes and Research Network, Canada; University of British Columbia, Vancouver, British Columbia, Canada
| | - Y R Rampersaud
- The Arthritis Program, Krembil Research Institute, University Health Network, Toronto, Ontario, Canada; Canadian Spine Outcomes and Research Network, Canada; University of Toronto, Toronto, Ontario, Canada
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Safaee MM, Deviren V, Dalle Ore C, Scheer JK, Lau D, Osorio JA, Nicholls F, Ames CP. Ligament augmentation for prevention of proximal junctional kyphosis and proximal junctional failure in adult spinal deformity. J Neurosurg Spine 2018; 28:512-519. [DOI: 10.3171/2017.9.spine1710] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
Abstract
OBJECTIVEProximal junctional kyphosis (PJK) is a well-recognized, yet incompletely defined, complication of adult spinal deformity surgery. There is no standardized definition for PJK, but most studies describe PJK as an increase in the proximal junctional angle (PJA) of greater than 10°–20°. Ligament augmentation is a novel strategy for PJK reduction that provides strength to the upper instrumented vertebra (UIV) and adjacent segments while also reducing junctional stress at those levels.METHODSIn this study, ligament augmentation was used in a consecutive series of adult spinal deformity patients at a single institution. Patient demographics, including age; sex; indication for surgery; revision surgery; surgical approach; and use of 3-column osteotomies, vertebroplasty, or hook fixation at the UIV, were collected. The PJA was measured preoperatively and at last follow-up using 36-inch radiographs. Data on change in PJA and need for revision surgery were collected. Univariate and multivariate analyses were performed to identify factors associated with change in PJA and proximal junctional failure (PJF), defined as PJK requiring surgical correction.RESULTSA total of 200 consecutive patients were included: 100 patients before implementation of ligament augmentation and 100 patients after implementation of this technique. The mean age of the ligament augmentation cohort was 66 years, and 67% of patients were women. Over half of these cases (51%) were revision surgeries, with 38% involving a combined anterior or lateral and posterior approach. The mean change in PJA was 6° in the ligament augmentation group compared with 14° in the control group (p < 0.001). Eighty-four patients had a change in PJA of less than 10°. In a multivariate linear regression model, age (p = 0.016), use of hook fixation at the UIV (p = 0.045), and use of ligament augmentation (p < 0.001) were associated with a change in PJA. In a separate model, only ligament augmentation (OR 0.193, p = 0.012) showed a significant association with PJF.CONCLUSIONSLigament augmentation represents a novel technique for the prevention of PJK and PJF. Compared with a well-matched historical cohort, ligament augmentation is associated with a significant decrease in PJK and PJF. These data support the implementation of ligament augmentation in surgery for adult spinal deformity, particularly in patients with a high risk of developing PJK and PJF.
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Affiliation(s)
| | - Vedat Deviren
- 2Orthopedic Surgery, University of California, San Francisco, California
| | | | - Justin K. Scheer
- 3Department of Neurological Surgery, University of Illinois, Chicago, Illinois; and
| | - Darryl Lau
- Departments of 1Neurological Surgery and
| | | | - Fred Nicholls
- 4Department of Orthopedic Surgery, University of Calgary, Alberta, Canada
| | - Christopher P. Ames
- Departments of 1Neurological Surgery and
- 2Orthopedic Surgery, University of California, San Francisco, California
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Bailey C, Stratton A, Manson N, Layne E, McKeon M, Harris S, McIntosh G, DellaMora L, McIntosh G, Miyanji F, Joukhadar N, Miyanji F, Miyanji F, Miyanji F, Miyanji F, Larouche J, Aoude A, Hardy-St-Pierre G, Roffey D, Evaniew N, Fazli G, Lin C, Dea N, Flood M, Glennie RA, Millstone DB, Nater A, Witiw C, Maggio D, Harris S, Collings D, Yee A, Tetreault L, Street J, Phillips J, Cochran M, Bigney E, Bouchard J, Jack A, Shamji M, Shamji M, Nakashima H, Chaudhary BR, Johnson M, Manson N, Tetreault L, Glennie RA, Evaniew N, Morris S, Spurway A, Bateman A, Abduljabbar F, Shamji M, McLachlin S, Manson N, Palkovsky R, Ailon T, Tetreault L, Johnson M, Street J, Street J, Bourassa-Moreau E, Nouri A, McIntosh G, Contreras A, Phan P, Hardy-St-Pierre G, Jarzem P, Wu H, Parsons D, Chukwunyerenwa C, Nadeau M, Bailey S, Rosas-Arellano P, Dehens S, Sequeira K, Miller T, Watson J, Siddiqi F, Gurr K, Urquhart J, Thomas K, McIntosh G, Hirsch L, Abraham E, Green A, McIntosh G, Roffey D, Wilson C, Kingwell S, Wai E, Manson N, Abraham E, Taylor E, Murray J, Albert W, Rampersaud R, Hall H, Carter T, Gregg C, Perruccio AV, Badley EM, Rampersaud YR, Steenstra I, Hall H, Carter T, Bastrom T, Samdani A, Yaszay B, Clements D, Shah S, Marks M, Betz R, Shufflebarger H, Newton P, Skaggs D, Heflin J, Yasin M, El-Hawary R, Bastrom T, Samdani A, Yaszay B, Asghar J, Shah S, Betz R, Shufflebarger H, Newton P, Reilly C, Choi J, Mok J, Nitikman M, Desai S, Reilly C, Desai S, Doddabasappa S, Reilly C, Nitikman M, Desai S, Paquette S, Fisher C, Domisse I, Wadey V, Hall H, Finkelstein J, Bouchard J, Hurlbert J, Broad R, Fox R, Hedden D, Nataraj A, Carey T, Bailey C, Chapman M, Moroz P, Chow D, Wai E, Tsai E, Christie S, Lundine K, Paquet J, Splawinski J, Wheelock B, Goytan M, Ahn H, Massicotte E, Fehlings M, Yee A, Alhamzah H, Fortin M, Jarzem P, Ouellet J, Weber M, Jack A, Thomas KC, Nataraj A, Coyle M, Kingwell S, Wai E, van der Watt L, Bhandari M, Ghert M, Aleem I, Drew B, Guyatt G, Jeyaratnam J, Nandlall N, Coyte P, Rampersaud R, Witiw C, Sundararajan K, Rampersaud YR, Fisher C, Batke J, Street J, Abraham E, Green A, Manson N, Ailon T, Batke J, Dea N, Street J, Perruccio AV, Badley EM, Rampersaud YR, Fehlings M, Tetreault L, Kopjar B, Fisher C, Vaccaro A, Arnold P, Schuster J, Finkelstein J, Rhines L, Dekutoski M, Gokaslan Z, France J, Rose P, Lin C, Sundararajan K, Rampersaud YR, Ailon T, Smith J, Shaffrey C, Lafage V, Schwab F, Haid R, Protopsaltis T, Klineberg E, Scheer J, Bess S, Arnold P, Chapman J, Fehlings M, Ames C, Rampersaud R, Nutt L, Urquhart J, Kuska L, Siddiqi F, Gurr K, Bailey C, Burch S, Sahgal A, Chow E, Niu C, Fisher C, Whyne C, Akens M, Bisland S, Wilson B, Nouri A, Cote P, Fehlings M, Mendelsohn D, Strelzow J, Batke J, Dvorak M, Fisher C, Urquhart J, Tallon C, Gurr K, Siddiqi F, Bailey S, Bailey C, Abraham E, Green A, Manson N, Manson NA, Green AJ, Abraham EP, Hurlbert J, Mogadham K, Swamy G, Tsahtsarlis A, Siddiqui M, Pierre GHS, Nataraj A, Mohanty C, Massicotte E, Fehlings M, Shcharinsky A, Tetreault L, Nagoshi N, Aria N, Fehlings M, Amritanand R, Rampersaud YR, Passmore S, McIntosh G, Abraham E, Green A, McIntosh G, Kopjar B, Cote P, Fehlings M, Arnold P, Batke J, Dea N, Dvorak M, Noonan V, Street J, Khan M, Drew B, Kwok D, Bhandari M, Ghert M, Howard J, Rasmusson D, El-Hawary R, Kishta W, Chukwunyerenwa C, El-Hawary R, Balkovec C, Akens M, Harrison R, McGill S, Yee A, Al-Jurayyan A, Alqahtani S, Sardar Z, Saluja RS, Ouellet J, Weber M, Steffen T, Beckman L, Jarzem P, Tu Y, Salter M, Polley B, Beig M, Larouche J, Whyne C, Green A, McIntosh G, Abraham E, Nicholls F, Burch S, Wagner P, Zhou H, Egge N, Harrigan M, Lapinsky A, Connoly P, Street J, DiPaola C, Kopjar B, Tan G, Cote P, Fehlings M, Passmore S, Street J, Fisher C, McIntosh G, Perlus IR, Kennedy J, Lenehan B, Strelzow J, Mendelsohn D, Dea N, Dvorak M, Fisher C, Mac-Thiong JM, Parent S, Li A, Thompson C, Tetreault L, Zamorano J, Dalzell K, Davis A, Mikulis D, Yee A, Fehlings M, Hall H, Carter T, Gregg C, Batke J, Dea N, Dvorak MF, Fisher CG, Street J, Le V(B, Roffey D, Kingwell S, MacPherson P, Desjardins M, Wai E, Siddiqui M, Henderson RL, Nataraj A, Simoes L, Assaker R, Ritter-Lang K, Vardon D, Litrico S, Fuentes S, Putzier M, Frank J, Guigui P, Nakach G, Le Huec JC, Pennington A, Batke J, Yang K, Fisher CG, Dvorak MF, Street J, Da Cunha R, Al Sayegh S, LaMothe J, Letal M, Johal H, Ferri-de-Barros F, El-Hawary R, Gauthier L, Spurway A, Johnston C, McClung A, Batke J, Lauscher HN, Fischer C, Street J. Canadian spine society 15th annual scientific conference. Can J Surg 2015; 58:S43-70. [PMID: 26011856 DOI: 10.1503/cjs.005515] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
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Nicholls F, Ng AH, Hu S, Janic K, Fallis C, Willett T, Grynpas M, Ferguson P. Can OP-1 stimulate union in a rat model of pathological fracture post treatment for soft tissue sarcoma? J Orthop Res 2014; 32:1252-63. [PMID: 24964906 DOI: 10.1002/jor.22661] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/13/2014] [Accepted: 05/14/2014] [Indexed: 02/04/2023]
Abstract
The goal of soft tissue sarcoma management in the extremities is limb preservation, often combining surgery and external beam radiation. In patients who have undergone this therapy in the thigh, pathologic fracture is a serious, late complication. Non-union rates of 80-90% persist. No reliable biologic solution exists. A rat model combining one 18 Gy dose of radiation and diaphyseal periosteal excision reliably generates atrophic non-union of femoral fractures. We hypothesized that augmentation with OP-1 would increase union rate. Female Sprague-Dawley retired breeder rats were randomized to Control, Disease (external beam radiotherapy and periosteal stripping), Control + OP-1 (80 µg) and Disease + OP-1 groups. Animals underwent prophylactic fixation and controlled left femur fracture. Twenty-eight, 35, and 42 days post-fracture were end-points. Femora were analyzed using MicroCT, Back Scattered Electron Microscopy, and Histomorphometry. We observed a 2% union rate in the Disease groups (±OP-1 treatment). The union rate in Control groups was 97%. MicroCT demonstrated a lack of callus volume in Disease groups. Heterotopic ossification was observed in some OP-1 treated animals. The ineffectiveness of OP-1 in stimulating fracture union in this model suggests the endogenous repair mechanism has been compromised beyond the capabilities of osteoinductive biologics.
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Affiliation(s)
- Fred Nicholls
- Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ontario, Canada
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16
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Webster F, Fehlings MG, Rice K, Malempati H, Fawaz K, Nicholls F, Baldeo N, Reeves S, Singh A, Ahn H, Ginsberg H, Yee AJ. Improving access to emergent spinal care through knowledge translation: an ethnographic study. BMC Health Serv Res 2014; 14:169. [PMID: 24731623 PMCID: PMC3998224 DOI: 10.1186/1472-6963-14-169] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2013] [Accepted: 04/04/2014] [Indexed: 11/10/2022] Open
Abstract
Background For patients and family members, access to timely specialty medical care for emergent spinal conditions is a significant stressor to an already serious condition. Timing to surgical care for emergent spinal conditions such as spinal trauma is an important predictor of outcome. However, few studies have explored ethnographically the views of surgeons and other key stakeholders on issues related to patient access and care for emergent spine conditions. The primary study objective was to determine the challenges to the provision of timely care as well as to identify areas of opportunities to enhance care delivery. Methods An ethnographic study of key administrative and clinical care providers involved in the triage and care of patients referred through CritiCall Ontario was undertaken utilizing standard methods of qualitative inquiry. This comprised 21 interviews with people involved in varying capacities with the provision of emergent spinal care, as well as qualitative observations on an orthopaedic/neurosurgical ward, in operating theatres, and at CritiCall Ontario’s call centre. Results Several themes were identified and organized into categories that range from inter-professional collaboration through to issues of hospital-level resources and the role of relationships between hospitals and external organizations at the provincial level. Underlying many of these issues is the nature of the medically complex emergent spine patient and the scientific evidentiary base upon which best practice care is delivered. Through the implementation of knowledge translation strategies facilitated from this research, a reduction of patient transfers out of province was observed in the one-year period following program implementation. Conclusions Our findings suggest that competing priorities at both the hospital and provincial level create challenges in the delivery of spinal care. Key stakeholders recognized spinal care as aligning with multiple priorities such as emergent/critical care, medical through surgical, acute through rehabilitative, disease-based (i.e. trauma, cancer), and wait times initiatives. However, despite newly implemented strategies, there continues to be increasing trends over time in the number of spinal CritiCall Ontario referrals. This reinforces the need for ongoing inter-professional efforts in care delivery that take into account the institutional contexts that may constrain individual or team efforts.
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Affiliation(s)
- Fiona Webster
- Department of Family & Community Medicine, University of Toronto, 500 University Ave, 5th floor, Toronto, Ontario M5G 1 V7, Canada.
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Nicholls F, Janic K, Filomeno P, Willett T, Grynpas M, Ferguson P. Effects of radiation and surgery on healing of femoral fractures in a rat model. J Orthop Res 2013; 31:1323-31. [PMID: 23606416 DOI: 10.1002/jor.22351] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/22/2012] [Accepted: 02/27/2013] [Indexed: 02/04/2023]
Abstract
Management of soft tissue sarcoma involves multimodality treatment, including surgery and radiotherapy. Pathologic fracture of the femur after such treatment in the thigh is one serious, late complication and nonunion rates of 80-90% are reported. We hypothesize that the combination of radiotherapy and periosteal stripping (during tumor resection) leads to greater impairment of the fracture repair process than either intervention alone. Female Wistar retired breeder rats were randomized into four treatment groups (control, radiotherapy, surgery, and combination of radiotherapy and surgery) and three end-points (21, 28, and 35 days post-fracture). Designated animals first underwent radiotherapy, followed by surgical stripping of the periosteum 3 weeks later and femoral fracture with fixation after another 3 weeks. Animals were sacrificed and fractures examined using microCT and histomorphometry. Simple transverse or short oblique femoral fractures were produced. By 35 days, control animals formed unions, periosteum-stripped animals formed hypertrophic non-unions and irradiated animals formed atrophic non-unions. Histomorphometry revealed an absence of chondroid and osteoid production in animals undergoing radiotherapy. The relative contribution of periosteal stripping to occurrence of non-union was statistically insignificant. Radiation prior to fracture reliably resulted in atrophic non-union in our model. The contribution of periosteal stripping was negligible.
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Affiliation(s)
- Fred Nicholls
- Division of Orthopaedic Surgery, Department of Surgery, University of Toronto, Toronto, Ont., Canada
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Jirkof P, Leucht K, Cesarovic N, Caj M, Nicholls F, Rogler G, Arras M, Hausmann M. Burrowing is a sensitive behavioural assay for monitoring general wellbeing during dextran sulfate sodium colitis in laboratory mice. Lab Anim 2013; 47:274-83. [PMID: 23828853 DOI: 10.1177/0023677213493409] [Citation(s) in RCA: 45] [Impact Index Per Article: 4.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Abstract
An impaired intestinal epithelial barrier is thought to be a major factor in the pathogenesis of human inflammatory bowel disease (IBD). IBD is frequently investigated by inducing a damaged barrier in murine models of colitis. This can be done by feeding mice with dextran sulfate sodium (DSS) polymers in their drinking water. Refinement measures should focus on alleviating unnecessary suffering during this probably painful condition. Appropriate parameters are needed to decide when to terminate the experiments. Our aim was to investigate whether a change in burrowing behaviour is a sensitive measure of animal welfare in murine models of colitis. Acute colitis was induced in C57BL/6 mice with 2.0% DSS over nine days. The burrowing test is based on the species-typical behaviour of mice to spontaneously displace items from tubes within their home cage. As a burrowing apparatus, a water bottle (250 mL, 150 mm length, 55 mm diameter) filled with 138-142 g of pellets of the animal's diet was used. The presence of intestinal inflammation as a result of acute DSS-induced colitis was confirmed by a decrease in body weight, colon length and an increase of murine endoscopic index of colitis severity, histological score and spleen weight in the group receiving DSS as compared with the control group. An onset of intestinal inflammation correlated with a significant decrease in burrowing behaviour (P < 0.05). Altered adrenal gland histology indicated stress as a result of acute colitis. Our findings provide evidence that changes of spontaneous burrowing behaviour correlate with the onset of inflammation in acute DSS-induced colitis.
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Affiliation(s)
- P Jirkof
- Institute of Laboratory Animal Science, University of Zurich, Zurich, Switzerland
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Schmidlin PR, Nicholls F, Kruse A, Zwahlen RA, Weber FE. Evaluation of moldable,in situhardening calcium phosphate bone graft substitutes. Clin Oral Implants Res 2011; 24:149-57. [DOI: 10.1111/j.1600-0501.2011.02315.x] [Citation(s) in RCA: 42] [Impact Index Per Article: 3.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 07/27/2011] [Indexed: 12/20/2022]
Affiliation(s)
- P. R. Schmidlin
- Clinic of Preventive Dentistry, Periodontology and Cariology; Center of Dental Medicine; University of Zürich; Zürich; Switzerland
| | - F. Nicholls
- Institute of Laboratory Animal Science; University of Zurich; Zürich; Switzerland
| | - A. Kruse
- Department of Cranio-Maxillofacial Surgery; Oral Biotechnology & Bioengineering; University Hospital Zurich; Zürich; Switzerland
| | - R. A. Zwahlen
- Department of Cranio-Maxillofacial Surgery; Oral Biotechnology & Bioengineering; University Hospital Zurich; Zürich; Switzerland
| | - F. E. Weber
- Department of Cranio-Maxillofacial Surgery; Oral Biotechnology & Bioengineering; University Hospital Zurich; Zürich; Switzerland
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Kruse A, Jung RE, Nicholls F, Zwahlen RA, Hämmerle CHF, Weber FE. Bone regeneration in the presence of a synthetic hydroxyapatite/silica oxide-based and a xenogenic hydroxyapatite-based bone substitute material. Clin Oral Implants Res 2010; 22:506-11. [DOI: 10.1111/j.1600-0501.2010.02039.x] [Citation(s) in RCA: 39] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Boes M, Kain M, Kakar S, Nicholls F, Cullinane D, Gerstenfeld L, Einhorn TA, Tornetta P. Osteogenic effects of traumatic brain injury on experimental fracture-healing. J Bone Joint Surg Am 2006; 88:738-43. [PMID: 16595463 DOI: 10.2106/jbjs.d.02648] [Citation(s) in RCA: 42] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
BACKGROUND Heterotopic bone formation has been observed in patients with traumatic brain injury; however, an association between such an injury and enhanced fracture-healing remains unclear. To test the hypothesis that traumatic brain injury causes a systemic response that enhances fracture-healing, we established a reproducible model of traumatic brain injury in association with a standard closed fracture and measured the osteogenic response with an in vitro cell assay and assessed bone-healing with biomechanical testing. METHODS A standard closed femoral fracture was produced in forty-three Sprague-Dawley rats. Twenty-three of the rats were subjected to additional closed head trauma that produced diffuse axonal injury similar to that observed in patients with a traumatic brain injury. Twenty-one days after the procedure, all animals were killed and fracture-healing was assessed by measuring callus size and by mechanical testing. Sera from the animals were used in subsequent in vitro experiments to measure mitogenic effects on established cell lines of committed osteoblasts, fibroblasts, and mesenchymal stem cells. RESULTS Biomechanical assessment demonstrated that the brain-injury group had increased stiffness (p = 0.02) compared with the fracture-only group. There was no significant difference in torsional strength between the two groups. Cell culture studies showed a significant increase in the proliferative response of mesenchymal stem cells after exposure to sera from the brain-injury group compared with the response after exposure to sera from the fracture-only group (p = 0.0002). This effect was not observed in fibroblasts or committed osteoblasts. CONCLUSIONS These results support data from previous studies that have suggested an increased osteogenic potential and an enhancement of fracture-healing secondary to traumatic brain injury. Our results further suggest that the mechanism for this enhancement is related to the presence of factors in the serum that have a mitogenic effect on undifferentiated mesenchymal stem cells.
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Affiliation(s)
- Matthew Boes
- Department of Orthopaedics, Boston Medical Center, Dowling 2 North, 850 Harrison Avenue, Boston, MA 02118, USA.
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Abstract
Abstract
Additional sex combs (Asx) is a member of the Polycomb group of genes, which are thought to be required for maintenance of chromatin structure. To better understand the function of Asx, we have isolated nine new alleles, each of which acts like a gain of function mutation. Asx is required for normal determination of segment identity. AsxP1 shows an unusual phenotype in that anterior and posterior homeotic transformations are seen in the same individuals, suggesting that AsxP1 might upset chromatin structure in a way that makes both activation and repression of homeotic genes more difficult. Analysis of embryonic and adult phenotypes of Asx alleles suggests that Asx is required zygotically for determination of segment number and polarity. The expression pattern of even-skipped is altered in Asx mutant embryos, suggesting that Asx is required for normal expression of this gene. We have transposon-tagged the Asx gene, and can thus begin molecular analysis of its function.
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Affiliation(s)
- D A Sinclair
- Department of Zoology, University of British Columbia, Vancouver, Canada
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Abstract
1. The contribution of Li+ reabsorption in the loop of Henle to lithium clearance (CLi) and the possible mechanism(s) involved were assessed in healthy volunteers. Four mechanisms were considered: (a) passive reabsorption in the thin ascending limb, (b) solvent drag in the thin descending limb, (c) the Na+, K+, 2Cl- transporter in the thick ascending limb and (d) paracellular movement in the thick ascending limb. 2. Since alterations in the corticomedullary osmolal concentration gradient produced by fluid restriction (500 ml day-1) and subsequent water loading (15 ml kg-1) did not affect either CLi (28.5 +/- 2.1 vs. 28.2 +/- 1.9 ml min-1) or fractional lithium clearance (FELi; 23.5 +/- 2.0 vs. 23.0 +/- 1.9%), it is unlikely that substantial Li+ reabsorption occurs in the thin limbs by either passive movement or solvent drag. 3. Increasing plasma Li+ with unchanged plasma Na+ in salt-replete volunteers was associated with only small reductions in CLi (32.8 +/- 1.3 ml min-1, P less than 0.05) and FELi (27.3 +/- 1.8 vs. 25.3 +/- 2.0%, P less than 0.05). This suggests that substantial Li+ reabsorption on the Na+, K+, 2Cl- transporter does not occur. 4. Bumetanide increased FELi in salt-depleted (LS) and salt-replete (HS) volunteers and abolished the pre-diuretic difference in FELi between salt intakes (LS, 16.6 +/- 1.5 vs. 38.7 +/- 2.3%, P less than 0.001; HS, 30.1 +/- 1.5 vs. 40.5 +/- 2.0%, P less than 0.001). Changes in CPO4 and CHCO3 were not detected. Acetazolamide produced comparable increases in FELi (LS, 16.6 +/- 1.5 vs. 38.7 +/- 2.2%, P less than 0.001; HS, 30.1 +/- 1.5 vs. 43.1 +/- 2.4%, P less than 0.01); and CPO4 and CHCO3 were increased. When tubular flow to the loop of Henle was increased by acetazolamide, the bumetanide-induced increases in FELi were reduced (LS, 38.7 +/- 2.2 vs. 48.7 +/- 2.3%, P less than 0.001; HS, 43.1 +/- 2.4 vs. 48.1 +/- 2.6%, P less than 0.001). 5. These data are consistent with the view that (a) Li+ is reabsorbed by a bumetanide-sensitive mechanism in the loop of Henle, (b) approximately 20 and 10% of the filtered load, respectively, is reabsorbed in the loop in salt-depleted and salt-replete volunteers, (c) flow-dependent, voltage-driven paracellular movement in the thick ascending limb is the likely mechanism and (d) this mechanism could account for the difference in Li+ reabsorption between low and high salt intakes.
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Affiliation(s)
- J C Atherton
- Department of Physiological Sciences, Manchester University
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Bown AW, Nicholls F. An investigation into the role of photosynthesis in regulating ATP levels and rates of h efflux in isolated meosphyll cells. Plant Physiol 1985; 79:928-34. [PMID: 16664547 PMCID: PMC1075001 DOI: 10.1104/pp.79.4.928] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/09/2023]
Abstract
Aerated and stirred 10-ml suspensions of mechanically isolated Asparagus sprengeri Regel mesophyll cells were used for simultaneous measurements of net H(+) efflux and steady-state ATP levels.Initial rates of medium acidification indicated values for H(+) efflux in the light and dark of 0.66 and 0.77 nanomoles H(+)/10(6) cells per minute, respectively. When the medium pH was maintained at 6.5, with a pH-stat apparatus, rates of H(+) efflux remained constant. Darkness or DCMU, however, stimulated H(+) efflux by 100% or more. Darkness increased ATP levels by 33% and a switch from dark to light reduced ATP levels by 31%. In the absence of aeration, illumination prevented the accumulation of respiratory CO(2) and the buffering capacity of the medium was about 50% less than that found in the nonilluminated nonaerated medium. As a result, rates of pH decline were similar even though the dark rate of H(+) efflux was approximately 50% greater.Proposals that photosynthesis stimulates H(+) efflux are based on changes in the rate of pH decline. The present data indicate that photosynthesis inhibits H(+) efflux and that changes in rates of pH decline should not be equated with changes in the rate of H(+) efflux.
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Affiliation(s)
- A W Bown
- Department of Biological Sciences, Brock University, St. Catharines, Ontario, Canada L2S 3A1
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Nicholls P, Hildebrandt V, Hill BC, Nicholls F, Wrigglesworth JM. Pathways of cytochrome c oxidation by soluble and membrane-bound cytochrome aa3. Can J Biochem 1980; 58:969-77. [PMID: 6257347 DOI: 10.1139/o80-132] [Citation(s) in RCA: 21] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
In media of low ionic strength, membraneous cytochrome c oxidase, isolated cytochrome c oxidase, and proteoliposomal cytochrome c oxidase each bind cytochrome c at two sites, one of low affinity (1 microM greater than Kd' greater than 0.2 microM) and readily reversible and the other of high affinity (0.01 microM greater than Kd) and weakly reversible. When cytochrome c occupies both sites, including the low affinity site, the maximal turnover measured polarographically with ascorbate and N,N,N',N'-tetramethyl-p-phenylenediamine (TMPD) is independent of TMPD concentration, and lies between 250 and 400 s-1 (30 degrees C, pH 7.4) for fully activated systems. The apparent affinity of the enzyme for cytochrome c is, however, TMPD dependent. When cytochrome c occupies only the high-affinity site, the maximal turnover is closely dependent upon the concentration of TMPD, which, unlike ascorbate, can reduce bound cytochrome c. As TMPD concentration is increased, the maximal turnover approaches that seen when both sites as occupied. The lower activity of isolated cytochrome aa3 is due to the presence of inactive or inaccessible enzyme molecules. Incorporation of isolated enzyme into phospholipid vesicles restores full activity to all the subsequently accessible cytochrome aa3 molecules. Negatively charged (asolectin) vesicles show a higher cytochrome c affinity at the low-affinity sites than do the other enzyme preparations. A model for the cytochrome c-cytochrome aa3 complexes is put forward in which both sites, when occupied, are fully catalytically competent, but in which occupation of the "tight" site by a catalytically functional cytochrome c molecule is required for overall oxidation of cytochrome c via the "loose" site.
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