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Balakumar B, Raju S, Marconi SD, Hassan MF. A pragmatic single centre retrospective comparative review of complication profile between PEEK cages and Zero-P cage screw constructs. Br J Neurosurg 2024; 38:904-910. [PMID: 34850648 DOI: 10.1080/02688697.2021.2005772] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/21/2020] [Revised: 11/05/2021] [Accepted: 11/09/2021] [Indexed: 10/19/2022]
Abstract
BACKGROUND Anterior Decompression and Fusion (ACDF) is a common surgery recommended for symptomatic cervical degenerative disc disease after failed conservative care. There is no consensus on the choice of implants, and it varies between surgeons. This study aims to analyse the early complications following ACDF performed using a standalone cage versus a Zero-P (Cage Screw - (CS)) construct for patients with cervical degenerative disc disease. METHODS A total of 162 patients underwent an ACDF between August 2016 and July 2018. There were 83 patients (111 cervical disc levels) with standalone cage (SA) and 79 patients (111 cervical disc levels) with cage-screw (CS) fixation. There was no difference between the groups in terms of age, gender, and levels of surgery. The follow-up ranged from 2 months to 24 months. Complications, both clinical and radiological, were assessed between the groups. RESULTS Both the SA and Zero-P (CS) groups were subdivided into single and multilevel surgery. Complications encountered in the SA group were temporary swallowing problems 10, hoarseness of voice 3, cage migration 1, delayed union 1, Horner's syndrome 1, cage subsidence 2. In the CS group swallowing problems 4, hoarseness of voice 4, CSF leak 1, recurrent symptoms 1. The observed difference in the incidence of complications between the groups did not reach statistical significance. Univariate analysis between the groups did not show any difference in the improvement of cervical sagittal balance, fusion rate, subsidence, and complications encountered. Multivariate logistic regression analysis for complications showed no difference between the groups when assessed for smoking, gender, age, Charlson comorbidity index, levels of surgery, fusion status, Odom score, or the type of implant. CONCLUSION In this short-term study, the standalone (SA) cages showed no difference in their complication profile in comparison to a cage-screw construct for both single and multilevel ACDF. Standalone cages might be a cost-effective option without increased complication risks. Nevertheless, we propose a longer-term follow-up with a prospective randomized trial for further evaluation of this finding.
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Affiliation(s)
- Balasubramanian Balakumar
- Specialty Registrar (ST6) Birmingham Orthopaedic Training Programme (BOTP) Rotation, Royal Orthopaedic Hospital, Birmingham, United Kingdom
| | - Sivashanmugam Raju
- Department of Orthopaedic Surgery, Saint Louis University School of Medicine, Saint Louis, MO, USA
| | - Sam David Marconi
- Community Health Department, Christian Medical College, Vellore, India
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Lorentz NA, Galetta MS, Zabat MA, Raman T, Protopsaltis TS, Fischer C. Post-Operative Physical Therapy Following Cervical Spine Surgery: Analysis of Patient-Reported Outcomes. Cureus 2023; 15:e40559. [PMID: 37465791 PMCID: PMC10351333 DOI: 10.7759/cureus.40559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 06/17/2023] [Indexed: 07/20/2023] Open
Abstract
Introduction Post-operative physical therapy (PT) following anterior cervical discectomy and fusion (ACDF) surgery is often performed to improve a patient's functional ability and reduce neck pain. However, current literature evaluating the benefits of post-operative PT using patient-reported outcomes (PROs) is limited and remains inconclusive. Here we compare post-operative improvement between patients who did and did not undergo formal PT after ACDF using Patient-Reported Outcomes Measurement Information System (PROMIS) scores. Methods A retrospective observational study examining patients who underwent one- or two-level primary ACDF or cervical disc replacement (CDR) at an academic orthopedic hospital and who had PROMIS scores recorded pre-operatively and through two-year follow-up. Patients were stratified according to whether or not they attended formal postoperative PT. PROMIS scores and patient demographics were compared using the Mann-Whitney U test, Fisher's exact test, chi-square test of independence, and Student's t-test within and between cohorts. Results Two hundred and twenty patients were identified. Demographic differences between PT and no PT groups include age (PT 54.1 vs. no PT 49.5, p=0.005) and BMI (PT 28.1 vs. no PT 29.8, p=0.028). The only significant difference in post-operative PROMIS scores was in physical health scores at three months post-operatively (no PT 43.9 vs. PT 39.1, p=0.008). Physical health scores improved from baseline to one-year follow-up in both cohorts (PT +3.5, p=0.025; no PT +6.6, p=0.008). There were no significant differences when comparing improvements in physical health scores between groups at six months and one year. Conclusion In conclusion, there was no significance to support the benefits of post-operative PT as measured by PROMIS scores. No significant differences in PROMIS were observed between groups from pre-operative baseline scores to six-month and one-year follow-ups.
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Affiliation(s)
- Nathan A Lorentz
- Orthopaedic Surgery, New York University (NYU) Grossman School of Medicine, New York, USA
| | - Matthew S Galetta
- Orthopaedic Surgery, New York University (NYU) Grossman School of Medicine, New York, USA
| | - Michelle A Zabat
- Orthopaedic Surgery, New York University (NYU) Grossman School of Medicine, New York, USA
| | - Tina Raman
- Orthopaedic Surgery, New York University (NYU) Grossman School of Medicine, New York, USA
| | | | - Charla Fischer
- Orthopaedic Surgery, New York University (NYU) Grossman School of Medicine, New York, USA
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Lambrechts MJ, Brush PL, Lee Y, Issa TZ, Lawall CL, Syal A, Wang J, Mangan JJ, Kaye ID, Canseco JA, Hilibrand AS, Vaccaro AR, Kepler CK, Schroeder GD. Patient-Reported Outcomes Following Anterior and Posterior Surgical Approaches for Multilevel Cervical Myelopathy. Spine (Phila Pa 1976) 2023; 48:526-533. [PMID: 36716386 DOI: 10.1097/brs.0000000000004586] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/12/2022] [Accepted: 01/11/2023] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Retrospective cohort. OBJECTIVE To compare health-related quality of life (HRQoL) outcomes between approach techniques for the treatment of multilevel degenerative cervical myelopathy (DCM). SUMMARY OF BACKGROUND DATA Both anterior and posterior approaches for the surgical treatment of cervical myelopathy are successful techniques in the treatment of myelopathy. However, the optimal treatment has yet to be determined, especially for multilevel disease, as the different approaches have separate complication profiles and potentially different impacts on HRQoL metrics. MATERIALS AND METHODS Retrospective review of a prospectively managed single institution database of patient-reported outcome measures after 3 and 4-level anterior cervical discectomy and fusion (ACDF) and posterior cervical decompression and fusion (PCDF) for DCM. The electronic medical record was reviewed for patient baseline characteristics and surgical outcomes whereas preoperative radiographs were analyzed for baseline cervical lordosis and sagittal balance. Bivariate and multivariate statistical analyses were performed to compare the two groups. RESULTS We identified 153 patients treated by ACDF and 43 patients treated by PCDF. Patients in the ACDF cohort were younger (60.1 ± 9.8 vs . 65.8 ± 6.9 yr; P < 0.001), had a lower overall comorbidity burden (Charlson Comorbidity Index: 2.25 ± 1.61 vs . 3.07 ± 1.64; P = 0.002), and were more likely to have a 3-level fusion (79.7% vs . 30.2%; P < 0.001), myeloradiculopathy (42.5% vs . 23.3%; P = 0.034), and cervical kyphosis (25.7% vs . 7.69%; P = 0.027). Patients undergoing an ACDF had significantly more improvement in their neck disability index after surgery (-14.28 vs . -3.02; P = 0.001), and this relationship was maintained on multivariate analysis with PCDF being independently associated with a worse neck disability index (+8.83; P = 0.025). Patients undergoing an ACDF also experienced more improvement in visual analog score neck pain after surgery (-2.94 vs . -1.47; P = 0.025) by bivariate analysis. CONCLUSIONS Our data suggest that patients undergoing an ACDF or PCDF for multilevel DCM have similar outcomes after surgery.
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Affiliation(s)
- Mark J Lambrechts
- Department of Orthopedic Surgery, Rothman Institute, Thomas Jefferson University, Philadelphia, PA
| | - Parker L Brush
- Department of Orthopedic Surgery, Rothman Institute, Thomas Jefferson University, Philadelphia, PA
| | - Yunsoo Lee
- Department of Orthopedic Surgery, Rothman Institute, Thomas Jefferson University, Philadelphia, PA
| | - Tariq Z Issa
- Department of Orthopedic Surgery, Rothman Institute, Thomas Jefferson University, Philadelphia, PA
| | | | - Amit Syal
- Thomas Jefferson University Medical School, Philadelphia, PA
| | - Jasmine Wang
- Thomas Jefferson University Medical School, Philadelphia, PA
| | - John J Mangan
- Department of Orthopedic Surgery, Rothman Institute, Thomas Jefferson University, Philadelphia, PA
| | - Ian David Kaye
- Department of Orthopedic Surgery, Rothman Institute, Thomas Jefferson University, Philadelphia, PA
| | - Jose A Canseco
- Department of Orthopedic Surgery, Rothman Institute, Thomas Jefferson University, Philadelphia, PA
| | - Alan S Hilibrand
- Department of Orthopedic Surgery, Rothman Institute, Thomas Jefferson University, Philadelphia, PA
| | - Alexander R Vaccaro
- Department of Orthopedic Surgery, Rothman Institute, Thomas Jefferson University, Philadelphia, PA
| | - Christopher K Kepler
- Department of Orthopedic Surgery, Rothman Institute, Thomas Jefferson University, Philadelphia, PA
| | - Gregory D Schroeder
- Department of Orthopedic Surgery, Rothman Institute, Thomas Jefferson University, Philadelphia, PA
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Koller H, Stengel FC, Hostettler IC, Koller J, Fekete T, Ferraris L, Hitzl W, Hempfing A. Clinical and surgical results related to anterior-only multilevel cervical decompression and instrumented fusion for degenerative disease. BRAIN & SPINE 2023; 3:101716. [PMID: 37383455 PMCID: PMC10293232 DOI: 10.1016/j.bas.2023.101716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/28/2022] [Revised: 11/20/2022] [Accepted: 01/20/2023] [Indexed: 06/30/2023]
Abstract
Introduction Anterior-only multilevel cervical decompression and fusion surgery (AMCS) on 3-5-levels is challenging due to potential complications. Also, outcome predictors after AMCS are poorly understood. Research Question We hypothesize that in patients with at most mild/moderate cervical kyphosis (CK) of the cervical spine, restoration of cervical lordosis (CL) positively influences clinical outcomes. Methods Analysis of consecutive patients presenting with symptomatic degenerative cervical disease or non-union undergoing AMCS. We measured CL from C2 to C7, Cobb angle of fused levels (fusion angle, FA), C7-Slope, and sagittal vertical axis C2-7 (cSVA, stratified into ≤4cm∖>4cm). Patients with excellent outcome were grouped in BEST-outcomes and with moderate/poor outcomes in WORST-outcomes. Results We included 244 patients. Fifty-four percent had 3-, 39% 4-level and 7% had 5-level fusion. At mean follow-up of 26 months, 41% of patients achieved BEST-outcome and 23% WORST-outcome. Complications and reoperation rates did not significantly differ. Non-union significantly influenced outcomes. The number of patients with non-union was significantly higher in patients with a preoperative cSVA>4cm (OR 13.1 (95%CI:1.8-96.8). Our model, based on the multivariable analysis with WORST-outcome as outcome variable showed a high accuracy (NPV=73%, PPV=77%, specificity=79%, sensitivity=71%). Discussion and Conclusion In 3-5-level AMCS, improvement of FA and cSVA were independent predictors of clinical outcome. Improvement of CL positively influenced clinical outcomes and rates of non-union.
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Affiliation(s)
- Heiko Koller
- Department of Neurosurgery, Technical University of Munich, Klinikum rechts der Isar, Munich, Germany
- Department for Traumatology and Sports Injuries, Paracelsus Medical University Salzburg, Austria
| | - Felix C. Stengel
- Department of Neurosurgery, Technical University of Munich, Klinikum rechts der Isar, Munich, Germany
- Department of Neurosurgery, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
| | - Isabel C. Hostettler
- Department of Neurosurgery, Technical University of Munich, Klinikum rechts der Isar, Munich, Germany
- Department of Neurosurgery, Cantonal Hospital St. Gallen, St. Gallen, Switzerland
| | - Juliane Koller
- Department for Orthopedic Surgery, Schoen Clinic Vogtareuth, Vogtareuth, Germany
| | - Tamas Fekete
- Department for Spine Surgery, Schulthess Clinic Zurich, Zurich, Switzerland
| | - Luis Ferraris
- Spine Center, Werner-Wicker-Clinic, Bad Wildungen, Germany
| | - Wolfgang Hitzl
- Research Program Experimental Ophthalmology and Glaucoma Research, Paracelsus Medical University, Salzburg, Austria
| | - Axel Hempfing
- Department for Orthopedic Surgery, Schoen Clinic Vogtareuth, Vogtareuth, Germany
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Chen K, Yang Y, Sun C, Zhu Y, Wang H, Lyu F, Jiang J, Zheng C. Loss of cervical sagittal alignment worsens the cervical spinal lesions in patients with Hirayama disease. Neurol Sci 2023; 44:2103-2111. [PMID: 36697854 DOI: 10.1007/s10072-023-06621-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/07/2022] [Accepted: 01/09/2023] [Indexed: 01/27/2023]
Abstract
OBJECTIVE To quantify the cervical sagittal alignment in patients with Hirayama disease (HD) and to investigate the effect of loss of cervical sagittal alignment upon the cervical spinal lesions in HD. METHODS Cervical sagittal alignments were measured in 253 HD patients and 63 healthy subjects by C2-C7 Cobb and a modified method of Toyama et al. Motor unit number estimation (MUNE) was performed in bilateral abductor pollicis brevis (APB) in all HD patients, and 31 patients further underwent cervical diffusion tensor imaging (DTI). RESULTS Compared with healthy subjects, HD patients showed lower C2-C7 Cobb (P < 0.05), and 83.4% patients showed loss of cervical lordosis (cervical straight or kyphosis), which was greater than healthy subjects (55.6%, P < 0.05). Compared with lordotic/straight group, patients with cervical kyphosis showed lower MUNE values and greater single motor unit potential (SMUP) in bilateral APB, and higher apparent dispersion coefficient (ADC) and lower fractional anisotropy were observed at C4/C5 level in the latter than the former (P < 0.05). C2-C7 Cobb was associated with both C4/C5 ADC and bilateral SMUP (P < 0.05). CONCLUSIONS Most HD patients showed loss of cervical sagittal alignments, and both MUNE and DTI detections demonstrated a positive correlation between loss of cervical sagittal alignments and cervical spinal lesions in HD. These findings supported that loss of cervical sagittal alignments may worsen motor impairments in HD. Therefore, it is necessary for clinicians to be aware of restoring cervical sagittal alignments during HD treatment.
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Affiliation(s)
- Kaiwen Chen
- Department of Orthopedics, Huashan Hospital, Fudan University, 12 Mid-Wulumuqi Road, Shanghai, 200040, China
| | - Yang Yang
- Department of Radiology, Huashan Hospital, Fudan University, Shanghai, 200040, China
| | - Chi Sun
- Department of Orthopedics, Huashan Hospital, Fudan University, 12 Mid-Wulumuqi Road, Shanghai, 200040, China
| | - Yu Zhu
- Department of Physical Medicine and Rehabilitation, Upstate Medical University, State University of New York at Syracuse, Syracuse, NY, 10212, USA
| | - Hongli Wang
- Department of Orthopedics, Huashan Hospital, Fudan University, 12 Mid-Wulumuqi Road, Shanghai, 200040, China
| | - Feizhou Lyu
- Department of Orthopedics, Huashan Hospital, Fudan University, 12 Mid-Wulumuqi Road, Shanghai, 200040, China.,Department of Orthopedics, The Fifth People's Hospital, Fudan University, Shanghai, 200240, China
| | - Jianyuan Jiang
- Department of Orthopedics, Huashan Hospital, Fudan University, 12 Mid-Wulumuqi Road, Shanghai, 200040, China.
| | - Chaojun Zheng
- Department of Orthopedics, Huashan Hospital, Fudan University, 12 Mid-Wulumuqi Road, Shanghai, 200040, China.
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6
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Croci DM, Sherrod B, Alvi MA, Mummaneni PV, Chan AK, Bydon M, Glassman SD, Foley KT, Potts EA, Shaffrey ME, Coric D, Knightly JJ, Park P, Wang MY, Fu KM, Slotkin JR, Asher AL, Than KD, Gottfried ON, Shaffrey CI, Virk MS, Bisson EF. Differences in postoperative quality of life in young, early elderly, and late elderly patients undergoing surgical treatment for degenerative cervical myelopathy. J Neurosurg Spine 2022; 37:339-349. [PMID: 35276658 DOI: 10.3171/2022.1.spine211157] [Citation(s) in RCA: 4] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/03/2021] [Accepted: 01/13/2022] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Cervical spondylotic myelopathy (CSM) is a common progressive spine disorder affecting predominantly middle-aged and elderly populations. With increasing life expectancy, the incidence of CSM is expected to rise further. The outcomes of elderly patients undergoing CSM surgery and especially their quality of life (QOL) postoperatively remain undetermined. This study retrospectively reviewed patients to identify baseline differences and validated postoperative patient-reported outcome (PRO) measures in elderly patients undergoing CSM surgery. METHODS The multi-institutional, neurosurgery-specific NeuroPoint Quality Outcomes Database was queried to identify CSM patients treated surgically at the 14 highest-volume sites from January 2016 to December 2018. Patients were divided into three groups: young (< 65 years), early elderly (65-74 years), and late elderly (≥ 75 years). Demographic and PRO measures (Neck Disability Index [NDI] score, modified Japanese Orthopaedic Association [mJOA] score, EQ-5D score, EQ-5D visual analog scale [VAS] score, arm pain VAS, and neck pain VAS) were compared among the groups at baseline and 3 and 12 months postoperatively. RESULTS A total of 1151 patients were identified: 691 patients (60%) in the young, 331 patients (28.7%) in the early elderly, and 129 patients (11.2%) in the late elderly groups. At baseline, younger patients presented with worse NDI scores (p < 0.001) and lower EQ-5D VAS (p = 0.004) and EQ-5D (p < 0.001) scores compared with early and late elderly patients. No differences among age groups were found in the mJOA score. An improvement of all QOL scores was noted in all age groups. On unadjusted analysis at 3 months, younger patients had greater improvement in arm pain VAS, NDI, and EQ-5D VAS compared with early and late elderly patients. At 12 months, the same changes were seen, but on adjusted analysis, there were no differences in PROs between the age groups. CONCLUSIONS The authors' results indicate that elderly patients undergoing CSM surgery achieved QOL outcomes that were equivalent to those of younger patients at the 12-month follow-up.
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Affiliation(s)
- Davide M Croci
- 1Department of Neurological Surgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah
| | - Brandon Sherrod
- 1Department of Neurological Surgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah
| | | | - Praveen V Mummaneni
- 3Department of Neurosurgery, University of California, San Francisco, California
| | - Andrew K Chan
- 3Department of Neurosurgery, University of California, San Francisco, California
| | - Mohamad Bydon
- 2Department of Neurosurgery, Mayo Clinic, Rochester, Minnesota
| | | | - Kevin T Foley
- 5Department of Neurosurgery, University of Tennessee, Memphis, Tennessee
| | - Eric A Potts
- 6Department of Neurosurgery, Indiana University; Goodman Campbell Brain and Spine, Indianapolis, Indiana
| | - Mark E Shaffrey
- 7Department of Neurosurgery, University of Virginia Health System, Charlottesville, Virginia
| | - Domagoj Coric
- 8Department of Neurosurgery, Carolina Neurosurgery and Spine Associates and Neuroscience Institute, Carolinas HealthCare System, Charlotte, North Carolina
| | | | - Paul Park
- 10Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan
| | - Michael Y Wang
- 11Department of Neurosurgery, University of Miami, Miami, Florida
| | - Kai-Ming Fu
- 12Department of Neurosurgery, Weill Cornell Medical College, New York, New York
| | | | - Anthony L Asher
- 8Department of Neurosurgery, Carolina Neurosurgery and Spine Associates and Neuroscience Institute, Carolinas HealthCare System, Charlotte, North Carolina
| | - Khoi D Than
- 14Department of Neurosurgery, Duke University, Durham, North Carolina
| | - Oren N Gottfried
- 14Department of Neurosurgery, Duke University, Durham, North Carolina
| | | | - Michael S Virk
- 12Department of Neurosurgery, Weill Cornell Medical College, New York, New York
| | - Erica F Bisson
- 1Department of Neurological Surgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah
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Wilkerson CG, Sherrod BA, Alvi MA, Asher AL, Coric D, Virk MS, Fu KM, Foley KT, Park P, Upadhyaya CD, Knightly JJ, Shaffrey ME, Potts EA, Shaffrey C, Wang MY, Mummaneni PV, Chan AK, Bydon M, Tumialán LM, Bisson EF. Differences in Patient-Reported Outcomes Between Anterior and Posterior Approaches for Treatment of Cervical Spondylotic Myelopathy: A Quality Outcomes Database Analysis. World Neurosurg 2022; 160:e436-e441. [PMID: 35051639 DOI: 10.1016/j.wneu.2022.01.049] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/03/2021] [Revised: 01/10/2022] [Accepted: 01/11/2022] [Indexed: 11/25/2022]
Abstract
OBJECTIVE Surgery for cervical spondylotic myelopathy (CSM) may use anterior or posterior approaches. Our objective was to compare baseline differences and validated postoperative patient-reported outcome measures between anterior and posterior approaches. METHODS The NeuroPoint Quality Outcomes Database was queried retrospectively to identify patients with symptomatic CSM treated at 14 high-volume sites. Demographic, comorbidity, socioeconomic, and outcome measures were compared between treatment groups at baseline and 3 and 12 months postoperatively. RESULTS Of the 1151 patients with CSM in the cervical registry, 791 (68.7%) underwent anterior surgery and 360 (31.3%) underwent posterior surgery. Significant baseline differences were observed in age, comorbidities, myelopathy severity, unemployment, and length of hospital stay. After adjusting for these differences, anterior surgery patients had significantly lower Neck Disability Index score (NDI) and a higher proportion reaching a minimal clinically important difference (MCID) in NDI (P = 0.005 at 3 months; P = 0.003 at 12 months). Although modified Japanese Orthopaedic Association scores were lower in anterior surgery patients at 3 and 12 months (P < 0.001 and P = 0.022, respectively), no differences were seen in MCID or change from baseline. Greater EuroQol-5D improvement at 3 months after anterior versus posterior surgery (P = 0.024) was not sustained at 12 months and was insignificant on multivariate analysis. CONCLUSIONS In the largest analysis to date of CSM surgery data, significant baseline differences existed for patients undergoing anterior versus posterior surgery for CSM. After adjusting for these differences, patients undergoing anterior surgery were more likely to achieve clinically significant improvement in NDI at short- and long-term follow-up.
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Affiliation(s)
- Christopher G Wilkerson
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA
| | - Brandon A Sherrod
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA
| | | | - Anthony L Asher
- Department of Neurosurgery, Carolina Neurosurgery and Spine Associates and Neuroscience Institute, Carolinas HealthCare System, Charlotte, North Carolina, USA
| | - Domagoj Coric
- Department of Neurosurgery, Carolina Neurosurgery and Spine Associates and Neuroscience Institute, Carolinas HealthCare System, Charlotte, North Carolina, USA
| | - Michael S Virk
- Department of Neurosurgery, Weill Cornell Medical College, New York, New York, USA
| | - Kai-Ming Fu
- Department of Neurosurgery, Weill Cornell Medical College, New York, New York, USA
| | - Kevin T Foley
- Department of Neurosurgery, University of Tennessee and Semmes Murphy Clinic, Memphis, Tennessee, USA
| | - Paul Park
- Department of Neurosurgery, University of Michigan, Ann Arbor, Michigan, USA
| | | | - John J Knightly
- Atlantic Neurosurgical Specialists, Morristown, New Jersey, USA
| | - Mark E Shaffrey
- Department of Neurosurgery, University of Virginia Health System, Charlottesville, Virginia, USA
| | - Eric A Potts
- Department of Neurosurgery, Indiana University; Goodman Campbell Brain and Spine, Indianapolis, Indiana, USA
| | | | - Michael Y Wang
- Department of Neurosurgery, University of Miami, Miami, Florida, USA
| | - Praveen V Mummaneni
- Department of Neurosurgery, University of California, San Francisco, California, USA
| | - Andrew K Chan
- Department of Neurosurgery, University of California, San Francisco, California, USA
| | - Mohamad Bydon
- Department of Neurosurgery, Mayo Clinic, Rochester, Minnesota, USA
| | | | - Erica F Bisson
- Department of Neurosurgery, Clinical Neurosciences Center, University of Utah, Salt Lake City, Utah, USA.
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8
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Bakare AA, Smitherman AD, Fontes RBV, O'Toole JE, Deutsch H, Traynelis VC. Clinical outcomes after 4- and 5-level Anterior Cervical Discectomy and Fusion for treatment of symptomatic multilevel cervical spondylosis. World Neurosurg 2022; 163:e363-e376. [PMID: 35367642 DOI: 10.1016/j.wneu.2022.03.119] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2022] [Revised: 03/26/2022] [Accepted: 03/28/2022] [Indexed: 11/16/2022]
Abstract
OBJECTIVE There are limited patient-reported outcome measure (PROM) data on 4- and 5-level ACDF. The largest series to date solely focused on complications. This retrospective series evaluates PROMs after 4- and 5-level ACDF. METHODS Pertinent data from adult patients treated with a 4- or 5-level ACDF in 2011-2019 were analyzed. PROMs and minimal clinically important differences (MCID) were assessed. Factors associated with favorable and unfavorable outcomes were identified. RESULTS There were thirty-four patients (thirty underwent 4-level and four underwent 5-level ACDFs) with mean age of 59.6; 55.9% were women. At 3 months, there were significant improvements in PROMs except SF-12 MCS with modest improvement. At 12 months, there were significant improvements in PROMs except SF-12 PCS with moderate improvement. The proportions of patients that met the MCID cut-offs ranged from 35.3% (NRS-neck) to 75% (VR-12 PCS) at 3 months and 38.2% (NRS-arm) to 65.5% (VR-12 MCS) at 12 months. Shorter symptom duration was associated with significantly reduced postoperative pain and NDI scores. Shorter length of stay was associated with significantly improved postoperative functional outcomes. 4-level compared 5-level ACDF patients achieved better postoperative PROMs. Shorter procedure duration was associated with improved PROMs at 3 months. No patients returned to the operating room within 30 days. Patients that required reoperation achieved significantly inferior NDI, NRS-neck, and SF-12 PCS at 3 months. CONCLUSIONS This study demonstrated satisfactory PROMs up to 12 months after 4- and 5-level ACDF despite the complication rate. With thorough preoperative planning and meticulous technique, performing this procedure in carefully selected patients may be associated with acceptable PROM.
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Affiliation(s)
- Adewale A Bakare
- Department of Neurosurgery, Rush University Medical Center, Chicago, IL
| | | | | | - John E O'Toole
- Department of Neurosurgery, Rush University Medical Center, Chicago, IL
| | - Harel Deutsch
- Department of Neurosurgery, Rush University Medical Center, Chicago, IL
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9
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Lee HJ, You ST, Sung JH, Kim IS, Hong JT. Analyzing the Significance of T1 Slope minus Cervical Lordosis in Patients with Anterior Cervical Discectomy and Fusion Surgery. J Korean Neurosurg Soc 2021; 64:913-921. [PMID: 34749484 PMCID: PMC8590907 DOI: 10.3340/jkns.2021.0011] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/13/2021] [Accepted: 03/03/2021] [Indexed: 11/27/2022] Open
Abstract
Objective Accurate measurement of T1 slope (a component of T1s minus cervical lordosis [CL]) is often constrained by anatomical limitations. In this situation, efforts should be made to find the exact meaning of T1s-CL and whether there are any alternatives to it.
Methods We enrolled 117 patients who received two-level anterior cervical discectomy and fusion (ACDF). Occipital slope, C2 slope (C2s), C7 slope (C7s), T1, O-C2 angle (O-C2A), C2-7 angle (C2-7A), O-C7 angle (O-C7A), T1s-CL, C7-T1 angle (C7-T1A), and C2-7 sagittal vertical axis were measured. We determined 16° (T1s-CL) as the reference point for dividing subjects into the mismatch group and the balance group, and a comparative analysis was performed.
Results The mean value of C7-T1A was constantly maintained within 2.6° peri-operatively. In addition, C2s and T1s-CL showed the same absolute change (Δ|0.8|°). The mean values of T1s-CL of the mismatch and balance groups were 23.0° and 7.6°, respectively. The five factors with the largest differences between the two groups were as follows : C2s (Δ13.3°), T1s-CL (Δ15.4°), O-C2A (Δ8.7°), C2-7A (Δ14.7°), and segmental angle (Δ7.9°) before surgery. Only four factors showed statistically significant change between the two groups after ACDF : T1s-CL (Δ4.0° vs. Δ0.2°), C2s (Δ3.2° vs. Δ0.7°), O-C2A (Δ2.6° vs. Δ1.3°), C2-7A (Δ6.3° vs. Δ1.3°). A very strong correlation between T1s-CL and C2s was also found (r=|0.88–0.96|).
Conclusion C2s itself may be the essential key to represent T1s-CL. The amounts and directions of change of these two factors (T1s-CL and C2s) were also almost identical. The above phenomenon was re-confirmed once again through the correlation analysis.
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Affiliation(s)
- Ho Jin Lee
- Department of Neurosurgery, St. Vincent Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Soon Tae You
- Department of Neurosurgery, St. Vincent Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Jae Hoon Sung
- Department of Neurosurgery, St. Vincent Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Il Sup Kim
- Department of Neurosurgery, St. Vincent Hospital, College of Medicine, The Catholic University of Korea, Suwon, Korea
| | - Jae Taek Hong
- Department of Neurosurgery, Eunpyeong St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, Korea
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10
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Quek CX, Goh GS, Soh RCC. Does Cervical Alignment Matter? The Effect of 2-level Anterior Cervical Discectomy and Fusion on Sagittal Alignment and Patient-reported Outcomes. Clin Spine Surg 2021; 34:E545-E551. [PMID: 34183546 DOI: 10.1097/bsd.0000000000001223] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/24/2020] [Accepted: 06/01/2021] [Indexed: 11/26/2022]
Abstract
STUDY DESIGN Retrospective review of prospectively collected data. OBJECTIVE This study aimed to determine the change in cervical sagittal balance following 2-level anterior cervical discectomy and fusion (ACDF) and whether the degree of change was associated with improvement in patient-reported outcomes (PROs). SUMMARY OF BACKGROUND DATA Sagittal balance in cervical spine surgery has been recognized as an important surgical goal. However, its influence on clinical outcomes following anterior decompressive procedures remains debatable. MATERIALS AND METHODS Patients who underwent primary 2-level ACDF for cervical spondylotic radiculopathy and/or myelopathy were identified from an institutional spine registry. Radiographic measurements were done preoperatively, postoperatively, and at minimum 24 months follow-up. Measurements comprised segmental lordosis (SL), C2-C7 cervical lordosis (CL), C2-C7 sagittal vertical axis, C7 slope (C7S), T1 slope (T1S) and C7 slope minus cervical lordosis (C7S-CL). Disk heights were measured preoperatively and postoperatively. PROs including the Neck Disability Index, Short Form-36, and Visual Analog Scale for neck pain and arm pain were collected preoperatively and at 24 months postoperatively. RESULTS In total, 90 patients were included. Mean follow-up was 58.6±22.9 months. Significant improvement in all PROs was achieved at 24 months (P<0.05). SL was -1.2±8.2 degrees preoperatively, increased to 5.2±5.9 degrees postoperatively (P<0.001), and decreased to 1.2±6.2 degrees at follow-up (P=0.005). CL was 8.5±12.5 degrees preoperatively, increased to 10.8±12.4 degrees postoperatively (P=0.018), and maintained at 10.9±11.2 degrees at follow-up (P=0.030). Sagittal vertical axis, C7S, T1S, and C7S-CL did not change significantly. Significant increases in disk heights were achieved postoperatively (P<0.001). Fusion rate was 98.9% at follow-up. PROs were not related to radiologic measurements. Maintaining or increasing CL or SL was not related to a greater degree of improvement in PROs. CONCLUSIONS Two-level ACDF restored segmental and global CL, but changes in cervical sagittal alignment did not correlate with the magnitude of improvement in PROs. Adequate decompression with solid fusion remains fundamental to achieving good clinical outcomes in patients with degenerative cervical disease.
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Affiliation(s)
- Clara X Quek
- Singapore General Hospital, Singapore, Singapore
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11
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Sagittal balance of the cervical spine: a systematic review and meta-analysis. EUROPEAN SPINE JOURNAL : OFFICIAL PUBLICATION OF THE EUROPEAN SPINE SOCIETY, THE EUROPEAN SPINAL DEFORMITY SOCIETY, AND THE EUROPEAN SECTION OF THE CERVICAL SPINE RESEARCH SOCIETY 2021; 30:1411-1439. [PMID: 33772659 DOI: 10.1007/s00586-021-06825-0] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2020] [Revised: 09/26/2020] [Accepted: 03/20/2021] [Indexed: 10/21/2022]
Abstract
PURPOSE The purpose of this systematic review and meta-analysis was to compare the cervical sagittal parameters between patients with cervical spine disorder and asymptomatic controls. METHODS Two independent authors systematically searched online databases including Pubmed, Scopus, Cochrane library, and Web of Science up to June 2020. Cervical sagittal balance parameters, such as T1 slope, cervical SVA (cSVA), and spine cranial angle (SCA), were compared between the cervical spine in healthy, symptomatic, and pre-operative participants. Where possible, we pooled data using random-effects meta-analysis, by CMA software. Heterogeneity and publication bias were assessed using the I-squared statistic and funnel plots, respectively. RESULTS A total of 102 studies, comprising 13,802 cases (52.7% female), were included in this meta-analysis. We used the Newcastle-Ottawa Scale (NOS) to evaluate the quality of studies included in this review. Funnel plot and Begg's test did not indicate obvious publication bias. The pooled analysis reveals that the mean (SD) values were: T1 slope (degree), 24.5 (0.98), 25.7 (0.99), 25.4 (0.34); cSVA (mm), 18.7 (1.76), 22.7 (0.66), 22.4 (0.68) for healthy population, symptomatic, and pre-operative assessment, respectively. The mean value of the SCA (degree) was 79.5 (3.55) and 75.6 (10.3) for healthy and symptomatic groups, respectively. Statistical differences were observed between the groups (all P values < 0.001). CONCLUSION The findings showed that the T1 slope and the cSVA were significantly lower among patients with cervical spine disorder compared to controls and higher for the SCA. Further well-conducted studies are needed to complement our findings.
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12
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Hussain I, Fu KM, Uribe JS, Chou D, Mummaneni PV. State of the art advances in minimally invasive surgery for adult spinal deformity. Spine Deform 2020; 8:1143-1158. [PMID: 32761477 DOI: 10.1007/s43390-020-00180-8] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/03/2020] [Accepted: 07/27/2020] [Indexed: 12/21/2022]
Abstract
Adult spinal deformity (ASD) can be associated with substantial suffering due to pain and disability. Surgical intervention for achieving neural decompression and restoring physiological spinal alignment has shown to result in significant improvement in pain and disability through patient-reported outcomes. Traditional open approaches involving posterior osteotomy techniques and instrumentation are effective based on clinical outcomes but associated with high complication rates, even in the hands of the most experienced surgeons. Minimally invasive techniques may offer benefit while decreasing associated morbidity. Minimally invasive surgery (MIS) for ASD has evolved over the past 20 years, driven by improved understanding of open procedures along with novel technique development and technologic advancements. Early efforts were hindered due to suboptimal outcomes resulting from high pseudarthrosis, inadequate correction, and fixation failure rates. To address this, multi-center collaborative groups have been established to study large numbers of ASD patients which have been vital to understanding optimal patient selection and individualized management strategies. Different MIS decision-making algorithms have been described to better define appropriate candidates and interbody selection approaches in ASD. The purpose of this state of the review is to describe the evolution of MIS surgery for adult deformity with emphasis on landmark papers, and to discuss specific MIS technology for ASD, including percutaneous pedicle screw instrumentation, hyperlordotic grafts, three-dimensional navigation, and robotics.
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Affiliation(s)
- Ibrahim Hussain
- Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, FL, USA
| | - Kai-Ming Fu
- Department of Neurological Surgery, Weill Cornell Medical College, New York-Presbyterian Hospital, 525 East 68th Street, Box 99, New York, NY, USA.
| | - Juan S Uribe
- Department of Neurological Surgery, Barrow Neurologic Institute, Phoenix, AZ, USA
| | - Dean Chou
- Department of Neurological Surgery, University of California, San Francisco, CA, USA
| | - Praveen V Mummaneni
- Department of Neurological Surgery, University of California, San Francisco, CA, USA
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13
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Lee SH, Hyun SJ, Jain A. Cervical Sagittal Alignment: Literature Review and Future Directions. Neurospine 2020; 17:478-496. [PMID: 33022153 PMCID: PMC7538362 DOI: 10.14245/ns.2040392.196] [Citation(s) in RCA: 44] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2020] [Accepted: 08/13/2020] [Indexed: 12/26/2022] Open
Abstract
Cervical alignment as a concept has come to the forefront for spine deformity research in the last decade. Studies on cervical sagittal alignment started from normative data, and expanded into correlation with global sagittal balance, prognosis of various conditions, outcomes of surgery, definition and classification of cervical deformity, and prediction of targets for ideal cervical reconstruction. Despite the recent robust research efforts, the definition of normal cervical sagittal alignment and cervical spine deformity continues to elude us. Further, many studies continue to view cervical alignment as a continuation of thoracolumbar deformity and do not take into account biomechanical features unique to the cervical spine that may influence cervical alignment, such as the importance of musculature connecting cranium-cervical-thoracic spine and upper extremities. In this article, we aim to summarize the relevant literature on cervical sagittal alignment, discuss key results, and list potential future direction for research using the '5W1H' framework; "WHO" are related?, "WHY" important?, "WHAT" to evaluate and "WHAT" is normal?, "HOW" to evaluate?, "WHEN" to apply sagittal balance?, and "WHERE" to go in the future?
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Affiliation(s)
- Sang Hun Lee
- Department of Orthopaedic Surgery, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
| | - Seung-Jae Hyun
- Department of Neurological Surgery, Seoul National University College of Medicine, Seoul, Korea
| | - Amit Jain
- Department of Orthopaedic Surgery, Johns Hopkins University, School of Medicine, Baltimore, MD, USA
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