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Ahluwalia R, Chanbour H, Zuckerman SL. Commentary: Trans-Sternal Multilevel Corpectomy for Cervicothoracic Renal Cell Metastasis: 2-Dimensional Operative Video. Oper Neurosurg (Hagerstown) 2024; 27:121-122. [PMID: 38648856 DOI: 10.1227/ons.0000000000001173] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/04/2024] [Accepted: 03/07/2024] [Indexed: 04/25/2024] Open
Affiliation(s)
- Ranbir Ahluwalia
- Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville , Tennessee , USA
| | - Hani Chanbour
- Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville , Tennessee , USA
| | - Scott L Zuckerman
- Department of Neurological Surgery, Vanderbilt University Medical Center, Nashville , Tennessee , USA
- Department of Orthopedic Surgery, Vanderbilt University Medical Center, Nashville , Tennessee , USA
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Park D, Lee SH, Lee S, Park J, Yang HG, Kim C, Park JH. The Efficacy of Cervical Pedicle Screw Is Enhanced When Used With 5.5-mm Rods for Metastatic Cervical Spinal Tumor Surgery. Neurospine 2024; 21:352-360. [PMID: 38291748 PMCID: PMC10992656 DOI: 10.14245/ns.2346778.389] [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: 07/27/2023] [Revised: 11/12/2023] [Accepted: 11/16/2023] [Indexed: 02/01/2024] Open
Abstract
OBJECTIVE The cervical spine presents challenges in treating metastatic cervical spinal tumors (MCSTs). Although the efficacy of cervical pedicle screw placement (CPS) has been well established, its use in combination with 5.5-mm rods for MCST has not been reported. This study aimed to evaluate the efficacy of CPS combined with 5.5-mm rods in treating MCST and compare it with that of CPS combined with traditional 3.5-mm rods. METHODS This retrospective study analyzed 58 patients with MCST who underwent posterior cervical spinal fusion surgery by a single surgeon between March 2012 and December 2022. Data included demographics, surgical details, imaging results, numerical rating scale score for neck pain, Eastern Cooperative Oncology Group performance status, and Spine Oncology Study Group Outcomes Questionnaire responses. RESULTS Preoperative Spinal Instability Neoplastic Scores were significantly higher in the 5.5-mm rod group. Greater kyphotic changes in the index vertebra were observed in the 3.5-mm rod group. Neck pain reduction was significantly better in the 5.5-mm rod group. CONCLUSION CPS with 5.5-mm rods provides superior biomechanical stability and effectively resists forward bending momentum in posterior MCST fusion surgery. These findings support the use of 5.5-mm rods to enhance surgical outcomes.
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Affiliation(s)
- Danbi Park
- Department of Neurological Surgery, Asan Medical Center, Seoul, Korea
- College of Nursing, Korea University, Seoul, Korea
| | - Sang Hyub Lee
- Department of Neurosurgery, Spine Center, The Leon Wiltse Memorial Hospital, Suwon, Korea
| | - Subum Lee
- Department of Neurosurgery, Korea University Anam Hospital, Korea University College of Medicine, Seoul, Korea
| | - Jemin Park
- Department of Neurological Surgery, Asan Medical Center, Seoul, Korea
| | - Hyeon Gyu Yang
- Department of Neurological Surgery, Asan Medical Center, Seoul, Korea
| | - Chongman Kim
- Department of Industrial and Management Engineering, Myongji University, Seoul, Korea
| | - Jin Hoon Park
- Department of Neurological Surgery, Asan Medical Center, Seoul, Korea
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Jank EA, Cetnar AJ. Exploring the Use of Contour-Based Intrafraction Motion Review for Spine Stereotactic Body Radiation Therapy Treatments. Adv Radiat Oncol 2024; 9:101351. [PMID: 38405323 PMCID: PMC10885588 DOI: 10.1016/j.adro.2023.101351] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/28/2023] [Accepted: 08/07/2023] [Indexed: 02/27/2024] Open
Abstract
Purpose Patient motion during radiation therapy treatment is a concern, especially for spine stereotactic body radiation therapy cases where the sharper dose gradient presents a toxicity threat to the spinal cord. Intrafraction motion review (IMR) is an application used to monitor patient position during treatment. The presence of spinal fixation hardware presents an opportunity for motion tracking to manually pause the beam. Methods and Materials A cohort of 17 clinicians were shown a video of the imaging console during a simulated treatment. Participants decided after each triggered image if they would pause the treatment beam, indicating that they believed the phantom to have moved outside of clinical tolerance. A spine phantom with hardware intact was positioned on a motion platform, which was programmed to make shifts ranging in size from 0.5 to 1.5 mm. A 1-mm isotropic expansion contour from the hardware was overlayed on the triggered planar x-ray images using the IMR application. Results User perception sensitivity did not exceed 0.5 until there was a physical shift of 1.4 mm, indicating that most users will not be able to reliably discriminate submillimeter shifts using contour-based shift identification. Conclusions If adaptations to standard of care are implemented clinically, the proposed method should be evaluated and the role of training and education should be examined before implementation. However, contour-based IMR could still provide beneficial information for larger intrafraction motion during treatment and could be valuable for identifying gross anatomic motion during treatment.
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Affiliation(s)
- Erika A. Jank
- Department of Radiation Oncology, The Ohio State University Wexner Medical Center, Columbus, Ohio
| | - Ashley J. Cetnar
- Department of Radiation Oncology, The Ohio State University Wexner Medical Center, Columbus, Ohio
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Newman WC, Larsen AG, Bilsky MH. The NOMS approach to metastatic tumors: Integrating new technologies to improve outcomes. Rev Esp Cir Ortop Traumatol (Engl Ed) 2023; 67:487-499. [PMID: 37116749 DOI: 10.1016/j.recot.2023.04.008] [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: 04/06/2023] [Accepted: 04/23/2023] [Indexed: 04/30/2023] Open
Abstract
Treatment paradigms for patients with spine metastases have evolved significantly over the past two decades. The most transformative change to these paradigms has been the integration of spinal stereotactic radiosurgery (sSRS). sSRS allows for the delivery of tumoricidal radiation doses with sparing of nearby organs at risk, particularly the spinal cord. Evidence supports the safety and efficacy of radiosurgery as it currently offers durable local tumor control with low complication rates even for tumors previously considered radioresistant to conventional external beam radiation therapy. The role for surgical intervention remains consistent, but a trend has been observed toward less aggressive, often minimally invasive techniques. Using modern technologies and improved instrumentation, surgical outcomes continue to improve with reduced morbidity. Additionally, targeted agents such as biologics and checkpoint inhibitors have revolutionized cancer care by improving both local control and patient survival. These advances have brought forth a need for new prognostication tools and a more critical review of long-term outcomes. The complex nature of current treatment schemes necessitates a multidisciplinary approach including surgeons, medical oncologists, radiation oncologists, interventionalists and pain specialists. This review recapitulates the current state-of-the-art, evidence-based data on the treatment of spinal metastases and integrates these data into a decision framework, NOMS, which is based on four sentinel pillars of decision making in metastatic spine tumors: Neurological status, Oncologic tumor behavior, Mechanical stability, and Systemic disease burden and medical co-morbidities.
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Affiliation(s)
- W C Newman
- Memorial Sloan Kettering Cancer Center, India
| | - A G Larsen
- Memorial Sloan Kettering Cancer Center, India; Weill Medical College of Cornell University, India
| | - M H Bilsky
- Memorial Sloan Kettering Cancer Center, India; Weill Medical College of Cornell University, India.
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Newman WC, Larsen AG, Bilsky MH. The NOMS approach to metastatic tumors: Integrating new technologies to improve outcomes. Rev Esp Cir Ortop Traumatol (Engl Ed) 2023; 67:S487-S499. [PMID: 37562765 DOI: 10.1016/j.recot.2023.08.013] [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: 04/06/2023] [Accepted: 04/23/2023] [Indexed: 08/12/2023] Open
Abstract
Treatment paradigms for patients with spine metastases have evolved significantly over the past two decades. The most transformative change to these paradigms has been the integration of spinal stereotactic radiosurgery (sSRS). sSRS allows for the delivery of tumoricidal radiation doses with sparing of nearby organs at risk, particularly the spinal cord. Evidence supports the safety and efficacy of radiosurgery as it currently offers durable local tumor control with low complication rates even for tumors previously considered radioresistant to conventional external beam radiation therapy. The role for surgical intervention remains consistent, but a trend has been observed toward less aggressive, often minimally invasive techniques. Using modern technologies and improved instrumentation, surgical outcomes continue to improve with reduced morbidity. Additionally, targeted agents such as biologics and checkpoint inhibitors have revolutionized cancer care by improving both local control and patient survival. These advances have brought forth a need for new prognostication tools and a more critical review of long-term outcomes. The complex nature of current treatment schemes necessitates a multidisciplinary approach including surgeons, medical oncologists, radiation oncologists, interventionalists and pain specialists. This review recapitulates the current state-of-the-art, evidence-based data on the treatment of spinal metastases and integrates these data into a decision framework, NOMS, which is based on four sentinel pillars of decision making in metastatic spine tumors: neurological status, Oocologic tumor behavior, mechanical stability and systemic disease burden and medical co-morbidities.
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Affiliation(s)
- W C Newman
- Memorial Sloan Kettering Cancer Center, Chennai, Tamil Nadu, India
| | - A G Larsen
- Memorial Sloan Kettering Cancer Center, Chennai, Tamil Nadu, India; Weill Medical College of Cornell University, India
| | - M H Bilsky
- Memorial Sloan Kettering Cancer Center, Chennai, Tamil Nadu, India; Weill Medical College of Cornell University, India.
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Kumar N, Tan JH, Thomas AC, Tan JYH, Madhu S, Shen L, Lopez KG, Hey DHW, Liu G, Wong H. The Utility of 'Minimal Access and Separation Surgery' in the Management of Metastatic Spine Disease. Global Spine J 2023; 13:1793-1802. [PMID: 35227126 PMCID: PMC10556902 DOI: 10.1177/21925682211049803] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
STUDY DESIGN Retrospective cohort study. OBJECTIVES To compare outcomes of percutaneous pedicle screw fixation (PPSF) to open posterior stabilization (OPS) in spinal instability patients and minimal access separation surgery (MASS) to open posterior stabilization and decompression (OPSD) in metastatic spinal cord compression (MSCC) patients. METHODS We analysed patients who underwent surgery for thoracolumbar metastatic spine disease (MSD) from Jan 2011 to Oct 2017. Patients were divided into minimally invasive spine surgery (MISS) and open spine surgery (OSS) groups. Spinal instability patients were treated with PPSF/OPS with pedicle screws. MSCC patients were treated with MASS/OPSD. Outcomes measured included intraoperative blood loss, operative time, duration of hospital stay and ASIA-score improvement. Time to initiate radiotherapy and perioperative surgical/non-surgical complications was recorded. Propensity scoring adjustment analysis was utilised to address heterogenicity of histological tumour subtypes. RESULTS Of 200 eligible patients, 61 underwent MISS and 139 underwent OSS for MSD. There was no significant difference in baseline characteristics between MISS and OSS groups. In the MISS group, 28 (45.9%) patients were treated for spinal instability and 33 (54.1%) patients were treated for MSCC. In the OSS group, 15 (10.8%) patients were treated for spinal instability alone and 124 (89.2%) were treated for MSCC. Patients who underwent PPSF had significantly lower blood loss (95 mL vs 564 mL; P < .001) and surgical complication rates(P < .05) with shorter length of stay approaching significance (6 vs 19 days; P = .100) when compared to the OPS group. Patients who underwent MASS had significantly lower blood loss (602 mL vs 1008 mL) and shorter length of stay (10 vs 18 days; P = .098) vs the OPSD group. CONCLUSION This study demonstrates the benefits of PPSF and MASS over OPS and OPSD for the treatment of MSD with spinal instability and MSCC, respectively.
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Affiliation(s)
- Naresh Kumar
- Department of Orthopaedic Surgery, National University Health System, Singapore, Singapore
| | - Jiong H. Tan
- Department of Orthopaedic Surgery, National University Health System, Singapore, Singapore
| | - Andrew C. Thomas
- Department of Orthopaedic Surgery, National University Health System, Singapore, Singapore
| | - Joel Y. H. Tan
- Department of Orthopaedic Surgery, National University Health System, Singapore, Singapore
| | - Sirisha Madhu
- Department of Orthopaedic Surgery, National University Health System, Singapore, Singapore
| | - Liang Shen
- Biostatistics Unit, Yong Loo Lin School of Medicine, National University of Singapore, Singapore, Singapore
| | - Keith G. Lopez
- Department of Orthopaedic Surgery, National University Health System, Singapore, Singapore
| | - Dennis H. W. Hey
- Department of Orthopaedic Surgery, National University Health System, Singapore, Singapore
| | - Gabriel Liu
- Department of Orthopaedic Surgery, National University Health System, Singapore, Singapore
| | - HeeKit Wong
- Department of Orthopaedic Surgery, National University Health System, Singapore, Singapore
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Newman WC, Bilsky MH. Fifty-year history of the evolution of spinal metastatic disease management. J Surg Oncol 2022; 126:913-920. [PMID: 36087077 DOI: 10.1002/jso.27028] [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: 06/29/2022] [Accepted: 07/04/2022] [Indexed: 11/07/2022]
Abstract
Spine metastases are a significant source of morbidity in oncology. Treatment of these spine metastases largely remains palliative, but advances over the past 50 years have improved the effectiveness of interventions for preserving functional status and obtaining local control while minimizing morbidity. While the field began with conventional external beam radiation as the primary treatment modality, a series of paradigm shifts and technological advances in the 2000s led to a change in treatment patterns. These advances allowed for an increased role of surgical decompression of neural elements, a shift in the stereotactic capabilities of radiation oncologists, and an improved understanding of the radiobiology of metastatic disease. The result was improved local control while minimizing treatment morbidity. These advances fit within the larger framework of metastatic spine tumor management known as the Neurologic, Oncologic, Mechanical, and Systemic disease decision framework. This dynamic framework takes into account the neurological function of the patient, the radiobiology of their tumor, their degree of mechanical instability, and their systemic disease control and treatment options to help determine appropriate interventions based on the individual patient. Herein, we describe the 50-year evolution of metastatic spine tumor management and the impact of various advances on the field.
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Affiliation(s)
- W Christopher Newman
- Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, New York, USA
| | - Mark H Bilsky
- Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, New York, USA.,Department of Neurological Surgery, Weill Cornell Medical College, New York-Presbyterian Hospital, New York, New York, USA
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Impact of Spinal Instrumentation on Neurological Outcome in Patients with Intermediate Spinal Instability Neoplastic Score (SINS). Cancers (Basel) 2022; 14:cancers14092193. [PMID: 35565322 PMCID: PMC9101027 DOI: 10.3390/cancers14092193] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2022] [Revised: 04/20/2022] [Accepted: 04/25/2022] [Indexed: 01/27/2023] Open
Abstract
Background: Adequate assessment of spinal instability using the spinal instability neoplastic score (SINS) frequently guides surgical therapy in spinal epidural osseous metastases and subsequently influences neurological outcome. However, how to surgically manage ‘impending instability’ at SINS 7−12 most appropriately remains uncertain. This study aimed to evaluate the necessity of spinal instrumentation in patients with SINS 7−12 with regards to neurological outcome. Methods: We screened 683 patients with spinal epidural metastases treated at our interdisciplinary spine center. The preoperative SINS was assessed to determine spinal instability and neurological status was defined using the Frankel score. Patients were dichotomized according to being treated by instrumentation surgery and neurological outcomes were compared. Additionally, a subgroup analysis of groups with SINS of 7−9 and 10−12 was performed. Results: Of 331 patients with a SINS of 7−12, 76.1% underwent spinal instrumentation. Neurological outcome did not differ significantly between instrumented and non-instrumented patients (p = 0.612). Spinal instrumentation was performed more frequently in SINS 10−12 than in SINS 7−9 (p < 0.001). The subgroup analysis showed no significant differences in neurological outcome between instrumented and non-instrumented patients in either SINS 7−9 (p = 0.278) or SINS 10−12 (p = 0.577). Complications occurred more frequently in instrumented than in non-instrumented patients (p = 0.016). Conclusions: Our data suggest that a SINS of 7−12 alone might not warrant the increased surgical risks of additional spinal instrumentation.
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Zaborovskii N, Schlauch A, Ptashnikov D, Mikaylov D, Masevnin S, Smekalenkov O, Shapton J, Kondrashov D. Hardware Failure in Spinal Tumor Surgery: A Hallmark of Longer Survival? Neurospine 2022; 19:84-95. [PMID: 35378583 PMCID: PMC8987542 DOI: 10.14245/ns.2143180.590] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2021] [Accepted: 01/16/2022] [Indexed: 11/19/2022] Open
Abstract
Objective: Instrumentation failure in spine tumor surgery is a common reason for revision operation. Increases in patient survival demand a better understanding of the hardware longevity. The study objective was to investigate risk factors for instrumentation failure requiring revision surgery in patients with spinal tumors.Methods: A retrospective cohort from a single tertiary care specialty hospital from January 2005 to January 2021, for patients with spinal primary or metastatic tumors who underwent surgical intervention with instrumentation. Demographic and treatment data were collected and analyzed. Kaplan-Meier analysis was performed for overall survival, and separate univariate and multivariate regression analysis was performed.Results: Three hundred fifty-one patients underwent surgical intervention for spinal tumor, of which 23 experienced instrumentation failure requiring revision surgery (6.6%). Multivariate regression analysis identified pelvic fixation (odds ratio [OR], 10.9), spinal metastasis invasiveness index (OR, 1.11), and survival of greater than 5 years (OR, 3.6) as significant risk factors for hardware failure. One- and 5-year survival rates were 57% and 8%, respectively.Conclusion: Instrumentation failure after spinal tumor surgery is a common reason for revision surgery. Our study suggests that the use of pelvic fixation, invasiveness of the surgery, and survival greater than 5 years are independent risk factors for instrumentation failure.
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Affiliation(s)
- Nikita Zaborovskii
- Vreden National Medical Research Center of Traumatology and Orthopedics, Saint-Petersburg, Russia
- Saint-Petersburg State University, Saint-Petersburg, Russia
| | - Adam Schlauch
- San Francisco Orthopaedic Residency Program, San Francisco, CA, USA
| | - Dmitrii Ptashnikov
- Vreden National Medical Research Center of Traumatology and Orthopedics, Saint-Petersburg, Russia
- North-Western State Medical University named after I.I.Mechnikov, Saint-Petersburg, Russia
| | - Dmitrii Mikaylov
- Vreden National Medical Research Center of Traumatology and Orthopedics, Saint-Petersburg, Russia
| | - Sergei Masevnin
- Vreden National Medical Research Center of Traumatology and Orthopedics, Saint-Petersburg, Russia
| | - Oleg Smekalenkov
- Vreden National Medical Research Center of Traumatology and Orthopedics, Saint-Petersburg, Russia
| | - John Shapton
- San Francisco Orthopaedic Residency Program, San Francisco, CA, USA
| | - Dimitriy Kondrashov
- Dignity Health - Saint Mary’s Hospital, San Francisco, CA, USA
- Corresponding Author Dimitriy Kondrashov https://orcid.org/0000-0002-3390-6648 Dignity Health - Saint Mary’s Hospital, SF Spine Surgeons, 1 Shrader Street, Suite 600, San Francisco, CA 94117, USA
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Feler J, Sun F, Bajaj A, Hagan M, Kanekar S, Sullivan PLZ, Fridley JS, Gokaslan ZL. Complication Avoidance in Surgical Management of Vertebral Column Tumors. Curr Oncol 2022; 29:1442-1454. [PMID: 35323321 PMCID: PMC8947448 DOI: 10.3390/curroncol29030121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/06/2021] [Revised: 02/16/2022] [Accepted: 02/22/2022] [Indexed: 11/23/2022] Open
Abstract
The surgical management of spinal tumors has grown increasingly complex as treatment algorithms for both primary bone tumors of the spine and metastatic spinal disease have evolved in response to novel surgical techniques, rising complication rates, and additional data concerning adjunct therapies. In this review, we discuss actionable interventions for improved patient safety in the operative care for spinal tumors. Strategies for complication avoidance in the preoperative, intraoperative, and postoperative settings are discussed for approach-related morbidities, intraoperative hemorrhage, wound healing complications, cerebrospinal fluid (CSF) leak, thromboembolism, and failure of instrumentation and fusion. These strategies center on themes such as pre-operative imaging review and medical optimization, surgical dissection informed by meticulous attention to anatomic boundaries, and fastidious wound closure followed by thorough post-operative care.
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Affiliation(s)
- Joshua Feler
- The Warren Alpert Medical School of Brown University, Providence, RI 02912, USA; (J.F.); (F.S.); (A.B.); (M.H.); (S.K.); (P.L.Z.S.); (J.S.F.)
- Department of Neurosurgery, Rhode Island Hospital, Providence, RI 02903, USA
| | - Felicia Sun
- The Warren Alpert Medical School of Brown University, Providence, RI 02912, USA; (J.F.); (F.S.); (A.B.); (M.H.); (S.K.); (P.L.Z.S.); (J.S.F.)
- Department of Neurosurgery, Rhode Island Hospital, Providence, RI 02903, USA
| | - Ankush Bajaj
- The Warren Alpert Medical School of Brown University, Providence, RI 02912, USA; (J.F.); (F.S.); (A.B.); (M.H.); (S.K.); (P.L.Z.S.); (J.S.F.)
| | - Matthew Hagan
- The Warren Alpert Medical School of Brown University, Providence, RI 02912, USA; (J.F.); (F.S.); (A.B.); (M.H.); (S.K.); (P.L.Z.S.); (J.S.F.)
| | - Samika Kanekar
- The Warren Alpert Medical School of Brown University, Providence, RI 02912, USA; (J.F.); (F.S.); (A.B.); (M.H.); (S.K.); (P.L.Z.S.); (J.S.F.)
| | - Patricia Leigh Zadnik Sullivan
- The Warren Alpert Medical School of Brown University, Providence, RI 02912, USA; (J.F.); (F.S.); (A.B.); (M.H.); (S.K.); (P.L.Z.S.); (J.S.F.)
- Department of Neurosurgery, Rhode Island Hospital, Providence, RI 02903, USA
| | - Jared S. Fridley
- The Warren Alpert Medical School of Brown University, Providence, RI 02912, USA; (J.F.); (F.S.); (A.B.); (M.H.); (S.K.); (P.L.Z.S.); (J.S.F.)
- Department of Neurosurgery, Rhode Island Hospital, Providence, RI 02903, USA
| | - Ziya L. Gokaslan
- The Warren Alpert Medical School of Brown University, Providence, RI 02912, USA; (J.F.); (F.S.); (A.B.); (M.H.); (S.K.); (P.L.Z.S.); (J.S.F.)
- Department of Neurosurgery, Rhode Island Hospital, Providence, RI 02903, USA
- Correspondence:
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Jaman E, Zhang X, Allen J, Saraiya RG, Tollefson S, Hamilton DK, Amankulor NM. Percutaneous fixation for the treatment of metastatic spinal disease provides effective symptom palliation with low rates of hardware failure. Surg Neurol Int 2022; 13:50. [PMID: 35242416 PMCID: PMC8888300 DOI: 10.25259/sni_1110_2021] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/05/2021] [Accepted: 01/07/2022] [Indexed: 12/02/2022] Open
Abstract
Background: The incidence of survival from metastatic spinal disease (MSD) continues to rise. However, open surgery for MSD is associated with significant perioperative morbidity, while minimally invasive percutaneous pedicle screw fixation (MIPPSF) offers reduced tissue trauma, less blood loss, and a reduction in complications. Lytic bone disease plus perioperative radiation further increase risk for instrument failure, especially in long construct MIPPSF. Here, we compared 6 short construct and 14 long construct outcomes for MIPPSF performed in MSD patients, including multiple myeloma (MM). Methods: For 20 patients undergoing MIPPSF for MSD, we evaluated disease type, location, the extent of surgery, outcomes, and survival rates. Statistical comparisons were performed between long-segment construct and short-segment construct patients utilizing Kaplan–Meier survival curves, Mann–Whitney U, and Chi-squared tests. Results: No instrument failure and comparable symptomatic relief were observed for both short and long MIPPSF constructs. However, long construct patients experienced; a higher incidence of postoperative complications, including screw loosening, but exhibited longer overall survivals (likely related to underlying type of MSD, with MM patients making up the largest portion of long construct patients). Conclusion: Long construct MIPPSF in MSD did not have increased risk of construct failure and offered effective symptomatic relief, including for MM patients, without introducing a greater risk construct instability.
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Affiliation(s)
- Emade Jaman
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, UPMC Presbyterian, Pittsburgh, Pennsylvania, United States
| | - Xiaoran Zhang
- Department of Neurological Surgery, University of Pittsburgh Medical Center, UPMC Presbyterian, Pittsburgh, Pennsylvania, United States
| | - Jordan Allen
- Department of Neurological Surgery, Albert Einstein College of Medicine, Bronx, New York, United States
| | - Raj G. Saraiya
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, UPMC Presbyterian, Pittsburgh, Pennsylvania, United States
| | - Savannah Tollefson
- Department of Neurological Surgery, University of Pittsburgh School of Medicine, UPMC Presbyterian, Pittsburgh, Pennsylvania, United States
| | - D. Kojo Hamilton
- Department of Neurological Surgery, University of Pittsburgh Medical Center, UPMC Presbyterian, Pittsburgh, Pennsylvania, United States
| | - Nduka M. Amankulor
- Department of Neurological Surgery, Hospital of the University of Pennsylvania, Philadelphia, Pennsylvania, United States
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Akinduro OO, De Biase G, Goyal A, Meyer JH, Sandhu SJS, Kowalchuk RO, Trifiletti DM, Sheehan J, Merrell KW, Vora SA, Broderick DF, Clarke MJ, Bydon M, McClendon J, Kalani MA, Quiñones-Hinojosa A, Abode-Iyamah K. Focused versus conventional radiotherapy in spinal oncology: is there any difference in fusion rates and pseudoarthrosis? J Neurooncol 2022; 156:329-339. [PMID: 34993721 DOI: 10.1007/s11060-021-03915-3] [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: 10/26/2021] [Accepted: 11/26/2021] [Indexed: 10/19/2022]
Abstract
INTRODUCTION Radiotherapy is considered standard of care for adjuvant peri-operative treatment of many spinal tumors, including those with instrumented fusion. Unfortunately, radiation treatment has been linked to increased risk of pseudoarthrosis. Newer focused radiotherapy strategies with enhanced conformality could offer improved fusion rates for these patients, but this has not been confirmed. METHODS We performed a retrospective analysis of patients at three tertiary care academic institutions with primary and secondary spinal malignancies that underwent resection, instrumented fusion, and peri-operative radiotherapy. Two board certified neuro-radiologists used the Lenke fusion score to grade fusion status at 6 and 12-months after surgery. Secondary outcomes included clinical pseudoarthrosis, wound complications, the effect of radiation timing and radiobiological dose delivered, the use of photons versus protons, tumor type, tumor location, and use of autograft on fusion outcomes. RESULTS After review of 1252 spinal tumor patients, there were 60 patients with at least 6 months follow-up that were included in our analyses. Twenty-five of these patients received focused radiotherapy, 20 patients received conventional radiotherapy, and 15 patients were treated with protons. There was no significant difference between the groups for covariates such as smoking status, obesity, diabetes, intraoperative use of autograft, and use of peri-operative chemotherapy. There was a significantly higher rate of fusion for patients treated with focused radiotherapy compared to those treated with conventional radiotherapy at 6-months (64.0% versus 30.0%, Odds ratio: 4.15, p = 0.036) and 12-months (80.0% versus 42.1%, OR: 5.50, p = 0.022). There was a significantly higher rate of clinical pseudoarthrosis in the conventional radiotherapy cohort compared to patients in the focused radiotherapy cohort (19.1% versus 0%, p = 0.037). There was no difference in fusion outcomes for any of the secondary outcomes except for use of autograft. The use of intra-operative autograft was associated with an improved fusion at 12-months (66.7% versus 37.5%, OR: 3.33, p = 0.043). CONCLUSION Focused radiotherapy may be associated with an improved rate of fusion and clinical pseudoarthrosis when compared to conventional radiation delivery strategies in patients with spinal tumors. Use of autograft at the time of surgery may be associated with improved 12-month fusion rates. Further large-scale prospective and randomized controlled studies are needed to better stratify the effects of radiation delivery modality in these patients.
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Affiliation(s)
| | - Gaetano De Biase
- Department of Neurosurgery, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Anshit Goyal
- Department of Neurosurgery, Mayo Clinic, Jacksonville, FL, 32224, USA
| | - Jenna H Meyer
- Department of Neurosurgery, Mayo Clinic, Phoenix, AZ, USA
| | | | | | | | - Jason Sheehan
- Department of Neurosurgery, University of Virginia, Charlottesville, VA, USA
| | | | - Sujay A Vora
- Department of Radiation Oncology, Mayo Clinic, Phoenix, AZ, USA
| | | | | | - Mohamad Bydon
- Department of Neurosurgery, Mayo Clinic, Rochester, MN, USA
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13
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Li RF, Qiao RQ, Xu MY, Ma RX, Hu YC. Separation Surgery in the Treatment of Spinal Metastasis. Technol Cancer Res Treat 2022; 21:15330338221107208. [PMID: 35702739 PMCID: PMC9208034 DOI: 10.1177/15330338221107208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
The life expectancy of patients with advanced cancer has been prolonged with the development of systemic treatment technology. Spinal metastasis is one of the common ways of metastasis of advanced tumors, leading to spinal cord compression and compression fractures, which often lead to a significant reduction in patients’ quality of life and physical function. Therefore, surgical treatment is still needed for functional recovery and local control. Separation surgery has been known since 2014 when it was purposed. Combined with radiotherapy, it can achieve an ideal goal of local control. This paper gives a brief introduction to separation surgery, hoping to increase the reader's understanding and consider this method in the course of treatment.
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Affiliation(s)
- Rui-Feng Li
- Department of Bone and Soft Tissue Oncology, 74768Tianjin Hospital, Tianjin, China.,Graduate School, 12610Tianjin Medical University, Tianjin, China
| | - Rui-Qi Qiao
- Department of Bone and Soft Tissue Oncology, 74768Tianjin Hospital, Tianjin, China.,Graduate School, 12610Tianjin Medical University, Tianjin, China
| | - Ming-You Xu
- Department of Bone and Soft Tissue Oncology, 74768Tianjin Hospital, Tianjin, China.,Graduate School, 12610Tianjin Medical University, Tianjin, China
| | - Rong-Xing Ma
- Department of Bone and Soft Tissue Oncology, 74768Tianjin Hospital, Tianjin, China.,Graduate School, 12610Tianjin Medical University, Tianjin, China
| | - Yong-Cheng Hu
- Department of Bone and Soft Tissue Oncology, 74768Tianjin Hospital, Tianjin, China
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14
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Tannoury C, Beeram I, Singh V, Saade A, Bhale R, Tannoury T. The Role of Minimally Invasive Percutaneous Pedicle Screw Fixation for the Management of Spinal Metastatic Disease. World Neurosurg 2021; 159:e453-e459. [DOI: 10.1016/j.wneu.2021.12.069] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2021] [Revised: 12/17/2021] [Accepted: 12/18/2021] [Indexed: 10/19/2022]
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15
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Amin AG, Barzilai O, Bilsky MH. CT-Based Image-Guided Navigation and the DaVinci Robot in Spine Oncology: Changing Surgical Paradigms. HSS J 2021; 17:294-301. [PMID: 34539270 PMCID: PMC8436350 DOI: 10.1177/15563316211032009] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
Affiliation(s)
- Anubhav G Amin
- Department of Neurological Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Ori Barzilai
- Department of Neurological Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Mark H Bilsky
- Department of Neurological Surgery, Memorial Sloan Kettering Cancer Center, New York, NY, USA.,Department of Neurological Surgery, Weill Cornell Medicine, New York, NY, USA
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Ehresman J, Pennington Z, Elsamadicy AA, Hersh A, Lubelski D, Lehner K, Cottrill E, Schilling A, Lakomkin N, Ahmed AK, Lo SF, Sciubba DM. Fenestrated pedicle screws for thoracolumbar instrumentation in patients with poor bone quality: Case series and systematic review of the literature. Clin Neurol Neurosurg 2021; 206:106675. [PMID: 34020324 DOI: 10.1016/j.clineuro.2021.106675] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/02/2021] [Revised: 04/27/2021] [Accepted: 05/02/2021] [Indexed: 02/08/2023]
Abstract
OBJECTIVE To describe the results of a single-surgeon series and systematically review the literature on cement-augmented instrumented fusion with fenestrated pedicle screws. METHODS All patients treated by the senior surgeon using fenestrated screws between 2017 and 2019 with a minimum of 6-months of clinical and radiographic follow-up were included. For the systematic review, we used PRISMA guidelines to identify all prior descriptions of cement-augmented instrumented fusion with fenestrated pedicle screws in the English literature. Endpoints of interest included hardware loosening, cement leakage, and pulmonary cement embolism (PCE). RESULTS Our series included 38 patients (mean follow-up 14.8 months) who underwent cement-augmented instrumentation for tumor (47.3%), deformity/degenerative disease (39.5%), or osteoporotic fracture (13.2%). Asymptomatic screw lucency was seen in 2.6%, cement leakage in 445, and pulmonary cement embolism (PCE) in 5.2%. Our literature review identified 23 studies (n = 1526 patients), with low reported rates of hardware loosening (0.2%) and symptomatic PCE (1.0%). Cement leakage, while common (55.6%), produced symptoms in fewer than 1% of patients. Indications for cement-augmentation in this cohort included: spine metastasis with or without pathologic fracture (n = 18; 47.3%), degenerative spine disease or fixed deformity with poor underlying bone quality (n = 15; 39.5%), and osteoporotic fracture (n = 5; 13.2%). CONCLUSION Cement-augmented fusion with fenestrated screws appears to be a safe, effective means of treating patients with poor underlying bone quality secondary to tumor or osteoporosis. High-quality evidence with direct comparisons to non-augmented patients is needed.
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Affiliation(s)
- Jeff Ehresman
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA.
| | - Zach Pennington
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; Department of Neurosurgery, Mayo Clinic, Rochester, MN 55905, USA.
| | - Aladine A Elsamadicy
- Department of Neurosurgery, Yale University School of Medicine, New Haven, CT 06510, USA
| | - Andrew Hersh
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Daniel Lubelski
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Kurt Lehner
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Ethan Cottrill
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Andrew Schilling
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Nikita Lakomkin
- Department of Neurosurgery, Mayo Clinic, Rochester, MN 55905, USA
| | - A Karim Ahmed
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Sheng-Fu Lo
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA
| | - Daniel M Sciubba
- Department of Neurosurgery, Johns Hopkins University School of Medicine, Baltimore, MD 21287, USA; Department of Neurosurgery, Zucker School of Medicine at Hofstra, Long Island Jewish Medical Center and North Shore University Hospital, Northwell Health, Manhasset, NY 11030, USA.
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17
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Massaad E, Rolle M, Hadzipasic M, Kiapour A, Shankar GM, Shin JH. Safety and efficacy of cement augmentation with fenestrated pedicle screws for tumor-related spinal instability. Neurosurg Focus 2021; 50:E12. [PMID: 33932920 DOI: 10.3171/2021.2.focus201121] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2020] [Accepted: 02/16/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Achieving rigid spinal fixation can be challenging in patients with cancer-related instability, as factors such as osteopenia, radiation, and immunosuppression adversely affect bone quality. Augmenting pedicle screws with cement is a strategy to overcome construct failure. This study aimed to assess the safety and efficacy of cement augmentation with fenestrated pedicle screws in patients undergoing posterior, open thoracolumbar surgery for spinal metastases. METHODS A retrospective review was performed for patients who underwent surgery for cancer-related spine instability from 2016 to 2019 at the Massachusetts General Hospital. Patient demographics, surgical details, radiographic characteristics, patterns of cement extravasation, complications, and prospectively collected Patient-Reported Outcomes Measurement Information System Pain Interference and Pain Intensity scores were analyzed using descriptive statistics. Logistic regression was performed to determine factors associated with cement extravasation. RESULTS Sixty-nine patients underwent open posterior surgery with a total of 502 cement-augmented screws (mean 7.8 screws per construct). The median follow-up period for those who survived past 90 days was 25.3 months (IQR 10.8-34.6 months). Thirteen patients (18.8%) either died within 90 days or were lost to follow-up. Postoperative CT was performed to assess the instrumentation and patterns of cement extravasation. There was no screw loosening, pullout, or failure. The rate of cement extravasation was 28.9% (145/502), most commonly through the segmental veins (77/145, 53.1%). Screws breaching the lateral border of the pedicle but with fenestrations within the vertebral body were associated with a higher risk of leakage through the segmental veins compared with screws without any breach (OR 8.77, 95% CI 2.84-29.79; p < 0.001). Cement extravasation did not cause symptoms except in 1 patient who developed a symptomatic thoracic radiculopathy requiring decompression. There was 1 case of asymptomatic pulmonary cement embolism. Patients experienced significant pain improvement at the 3-month follow-up, with decreases in Pain Interference (mean change 15.8, 95% CI 14.5-17.1; p < 0.001) and Pain Intensity (mean change 28.5, 95% CI 26.7-30.4; p < 0.001). CONCLUSIONS Cement augmentation through fenestrated pedicle screws is a safe and effective option for spine stabilization in the cancer population. The risk of clinically significant adverse events from cement extravasation is very low.
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18
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Newman WC, Amin AG, Villavieja J, Laufer I, Bilsky MH, Barzilai O. Short-segment cement-augmented fixation in open separation surgery of metastatic epidural spinal cord compression: initial experience. Neurosurg Focus 2021; 50:E11. [PMID: 33932919 DOI: 10.3171/2021.2.focus217] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/01/2021] [Accepted: 02/23/2021] [Indexed: 11/06/2022]
Abstract
OBJECTIVE High-grade metastatic epidural spinal cord compression from radioresistant tumor histologies is often treated with separation surgery and adjuvant stereotactic body radiation therapy. Historically, long-segment fixation is performed during separation surgery with posterior transpedicular fixation of a minimum of 2 spinal levels superior and inferior to the decompression. Previous experience with minimal access surgery techniques and percutaneous stabilization have highlighted reduced morbidity as an advantage to the use of shorter fixation constructs. Cement augmentation of pedicle screws is an attractive option for enhanced stabilization while performing shorter fixation. Herein, the authors describe their initial experience of open separation surgery using short-segment cement-augmented pedicle screw fixation for spinal reconstruction. METHODS The authors performed a retrospective chart review of patients undergoing open (i.e., nonpercutaneous, minimal access surgery) separation surgery for high-grade epidural spinal cord compression using cement-augmented pedicle screws at single levels adjacent to the decompression level(s). Patient demographics, treatment data, operative complications, and short-term radiographic outcomes were evaluated. RESULTS Overall, 44 patients met inclusion criteria with radiographic follow-up at a mean of 8.5 months. Involved levels included 19 thoracic, 5 thoracolumbar, and 20 lumbar. Cement augmentation through fenestrated pedicle screws was performed in 30 patients, and a vertebroplasty-type approach was used in the remaining 14 patients to augment screw purchase. One (2%) patient required an operative revision for a hardware complication. Three (7%) nonoperative radiographic hardware complications occurred, including 1 pathologic fracture at the index level causing progressive kyphosis and 2 incidences of haloing around a single screw. There were 2 wound complications that were managed conservatively without operative intervention. No cement-related complications occurred. CONCLUSIONS Open posterolateral decompression utilizing short-segment cement-augmented pedicle screws is a viable alternative to long-segment instrumentation for reconstruction following separation surgery for metastatic spine tumors. Studies with longer follow-up are needed to determine the rates of delayed complications and the durability of these outcomes.
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Affiliation(s)
- William C Newman
- 1Department of Neurological Surgery, Memorial Sloan Kettering Cancer Center; and
| | - Anubhav G Amin
- 1Department of Neurological Surgery, Memorial Sloan Kettering Cancer Center; and.,2Department of Neurological Surgery, Weill Cornell Medical College, NewYork-Presbyterian Hospital, New York, New York
| | - Jemma Villavieja
- 1Department of Neurological Surgery, Memorial Sloan Kettering Cancer Center; and
| | - Ilya Laufer
- 1Department of Neurological Surgery, Memorial Sloan Kettering Cancer Center; and.,2Department of Neurological Surgery, Weill Cornell Medical College, NewYork-Presbyterian Hospital, New York, New York
| | - Mark H Bilsky
- 1Department of Neurological Surgery, Memorial Sloan Kettering Cancer Center; and.,2Department of Neurological Surgery, Weill Cornell Medical College, NewYork-Presbyterian Hospital, New York, New York
| | - Ori Barzilai
- 1Department of Neurological Surgery, Memorial Sloan Kettering Cancer Center; and
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19
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Bao WD, Jia Q, Wang T, Lou Y, Jiang DJ, Yang C, Yang X, Huang Q, Wei HF, Xiao JR. Factors Related to Instrumentation Failure in Titanium Mesh Reconstruction for Thoracic and Lumbar Tumors: Retrospective Analysis of 178 Patients. Cancer Manag Res 2021; 13:3345-3355. [PMID: 33883946 PMCID: PMC8055544 DOI: 10.2147/cmar.s294616] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2020] [Accepted: 03/29/2021] [Indexed: 11/23/2022] Open
Abstract
Purpose To investigate risk factors for instrumentation failure (IF) in titanium (Ti) mesh reconstruction for thoracic and lumbar tumors. Patients and Methods The clinical data of patients with thoracic or lumbar tumors who received Ti mesh reconstruction via the posterior approach in our hospital from 2013 to 2018 were analyzed retrospectively. The observation indexes included sex, age, BMI, the vertebra resection mode, the number of resected vertebral segments, application of bone cement, radiotherapy, chemotherapy, revision or primary surgery, and primary tumor metastasis. Correlations between these factors and IF were analyzed by Kaplan–Meier survival and logistics regression analyses. Results The 178 patients included 108 males and 70 females with a mean age of 48.09±16.21 (6–78) years and a mean follow-up period of 51.18 (24–90) months. The data showed that 17 patients (9.55%) were inflicted with IF, involving the thoracic vertebra in 11 cases, thoracolumbar vertebrae (T12–L1) in 2 cases, and lumbar vertebrae in 4 cases. The mean interval between surgery to IF was 35.18±14.17 (14–59) months. Univariate analysis showed that total vertebral body resection, the number of resected vertebral segments, radiotherapy and multiple tumor resection were potential factors for IF, while multivariate analysis showed that only total vertebral body resection, the number of resected vertebral segments and radiotherapy were independent factors. Conclusion Total vertebra resection, the number of resected vertebral segments (≥2) and radiotherapy before and after operation were significant risk factors related to IF.
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Affiliation(s)
- Wei-Dong Bao
- Department of Orthopedics, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, People's Republic of China
| | - Qi Jia
- Department of Orthopedic Oncology, Spinal Tumor Center, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, 200003, People's Republic of China
| | - Tao Wang
- Department of Orthopedic Oncology, Spinal Tumor Center, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, 200003, People's Republic of China.,Department of Orthopeadics, Second Affiliated Hospital of Anhui Medical University, Hefei, 230000, People's Republic of China
| | - Yan Lou
- Department of Orthopedic Oncology, Spinal Tumor Center, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, 200003, People's Republic of China
| | - Dong-Jie Jiang
- Department of Orthopedic Oncology, Spinal Tumor Center, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, 200003, People's Republic of China
| | - Cheng Yang
- Department of Orthopedic Oncology, Spinal Tumor Center, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, 200003, People's Republic of China
| | - Xinghai Yang
- Department of Orthopedic Oncology, Spinal Tumor Center, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, 200003, People's Republic of China
| | - Quan Huang
- Department of Orthopedic Oncology, Spinal Tumor Center, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, 200003, People's Republic of China
| | - Hai-Feng Wei
- Department of Orthopedic Oncology, Spinal Tumor Center, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, 200003, People's Republic of China
| | - Jian-Ru Xiao
- Department of Orthopedics, Longhua Hospital Affiliated to Shanghai University of Traditional Chinese Medicine, Shanghai, 200032, People's Republic of China.,Department of Orthopedic Oncology, Spinal Tumor Center, Shanghai Changzheng Hospital, Second Military Medical University, Shanghai, 200003, People's Republic of China
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20
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Yee TJ, Saadeh YS, Strong MJ, Ward AL, Elswick CM, Srinivasan S, Park P, Oppenlander ME, Spratt DE, Jackson WC, Szerlip NJ. Survival, fusion, and hardware failure after surgery for spinal metastatic disease. J Neurosurg Spine 2021; 34:665-672. [PMID: 33513569 DOI: 10.3171/2020.8.spine201166] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/27/2020] [Accepted: 08/24/2020] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Decompression with instrumented fusion is commonly employed for spinal metastatic disease. Arthrodesis is typically sought despite limited knowledge of fusion outcomes, high procedural morbidity, and poor prognosis. This study aimed to describe survival, fusion, and hardware failure after decompression and fusion for spinal metastatic disease. METHODS The authors retrospectively examined a prospectively collected, single-institution database of adult patients undergoing decompression and instrumented fusion for spinal metastases. Patients were followed clinically until death or loss to follow-up. Fusion was assessed using CT when performed for oncological surveillance at 6-month intervals through 24 months postoperatively. Estimated cumulative incidences for fusion and hardware failure accounted for the competing risk of death. Potential risk factors were analyzed with univariate Fine and Gray proportional subdistribution hazard models. RESULTS One hundred sixty-four patients were identified. The mean age ± SD was 62.2 ± 10.8 years, 61.6% of patients were male, 98.8% received allograft and/or autograft, and 89.6% received postoperative radiotherapy. The Kaplan-Meier estimate of median survival was 11.0 months (IQR 3.5-37.8 months). The estimated cumulative incidences of any fusion and of complete fusion were 28.8% (95% CI 21.3%-36.7%) and 8.2% (95% CI 4.1%-13.9%). Of patients surviving 6 and 12 months, complete fusion was observed in 12.5% and 16.1%, respectively. The estimated cumulative incidence of hardware failure was 4.2% (95% CI 1.5-9.3%). Increasing age predicted hardware failure (HR 1.2, p = 0.003). CONCLUSIONS Low rates of complete fusion and hardware failure were observed due to the high competing risk of death. Further prospective, case-control studies incorporating nonfusion instrumentation techniques may be warranted.
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Affiliation(s)
| | | | | | | | - Clay M Elswick
- 2Brain and Spine Specialists of North Texas, Arlington, Texas
| | | | | | | | - Daniel E Spratt
- 3Radiation Oncology, University of Michigan, Ann Arbor, Michigan; and
| | - William C Jackson
- 3Radiation Oncology, University of Michigan, Ann Arbor, Michigan; and
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21
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Silva A, Yurac R, Guiroy A, Bravo O, Morales Ciancio A, Landriel F, Hem S. Low Implant Failure Rate of Percutaneous Fixation for Spinal Metastases: A Multicenter Retrospective Study. World Neurosurg 2021; 148:e627-e634. [PMID: 33484887 DOI: 10.1016/j.wneu.2021.01.047] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2020] [Revised: 01/11/2021] [Accepted: 01/12/2021] [Indexed: 01/26/2023]
Abstract
OBJECTIVE To evaluate incidence and types of implant failure observed in a series of patients with spinal metastases (SM) treated with minimally invasive stabilization surgery without fusion. METHODS In this multicenter, retrospective, observational study, we reviewed the files of patients >18 years old who underwent surgery for SM using percutaneous spinal stabilization without fusion with a minimum 3-month follow-up. The following variables were included: demographics, clinical findings, prior radiation history, SM location, epidural spinal cord compression scale, Spinal Instability Neoplastic Scale, neurological examination, and surgery-related data. Primary outcome measure was implant failure rate, as observed in patients' last computed tomography scan. Multivariable analysis was performed to identify baseline factors and factors associated with implant failure. RESULTS Analysis included 72 patients. Mean age of patients was 62 years, 39 patients were men, and 75% of patients had an intermediate Spinal Instability Neoplastic Scale score. Tumor separation surgery was performed in 48.6% of patients. Short instrumentation was indicated in 54.2% of patients. Three patients (4.2%) experienced implant failure (2 screw loosening, 1 screw cut-out); none of them required revision surgery. In 73.6% of cases, survival was >6 months. No significant predictors of failure were identified in the multivariate analysis. CONCLUSIONS A low implant failure rate was observed over the short and medium term, even when short instrumentations without fusion were performed. These findings suggest that minimally invasive stabilization surgery without fusion may be an effective and safe way to treat complicated SM.
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Affiliation(s)
- Alvaro Silva
- Facultad de Medicina, Clínica Alemana Universidad del Desarrollo, Santiago, Chile.
| | - Ratko Yurac
- Facultad de Medicina, Clínica Alemana Universidad del Desarrollo, Santiago, Chile
| | - Alfredo Guiroy
- Spine Unit, Orthopedic Department, Hospital Español de Mendoza, Mendoza, Argentina
| | - Oscar Bravo
- Facultad de Medicina, Clínica Alemana Universidad del Desarrollo, Santiago, Chile
| | | | - Federico Landriel
- Neurosurgery Department, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
| | - Santiago Hem
- Neurosurgery Department, Hospital Italiano de Buenos Aires, Buenos Aires, Argentina
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22
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Wang Z, Truong VT, Shedid D, Newman N, Mc Graw M, Boubez G. One-stage oblique lateral corridor antibiotic-cement reconstruction for Candida spondylodiscitis in patients with major comorbidities: Preliminary experience. Neurochirurgie 2021; 67:157-164. [PMID: 33450269 DOI: 10.1016/j.neuchi.2020.12.005] [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: 08/25/2020] [Revised: 10/29/2020] [Accepted: 12/25/2020] [Indexed: 11/28/2022]
Abstract
Fungal spondylodiscitis is rare (0.5%-1.6% of spondylodiscitis) and mainly caused by Candida albicans. Surgical intervention in spondylodiscitis patients is indicated for compression of neural elements, spinal instability, severe kyphosis, failure of conservative management and intractable pain. However, there is no evidence-based optimal surgical approach for spondylodiscitis. There have been only case reports of surgical treatment for Candida spondylodiscitis. We evaluated the preliminary results of the efficacy and safety of one-stage debridement via oblique lateral corridor with interbody fusion (OLIF) using stand-alone cement reconstruction after debridement for the treatment of Candida spondylodiscitis in patients with major co-morbidities. Five patients (4 males, 1 female, mean age: 64.2 years) suffering from Candida albicans lumbar spondylodiscitis who underwent this procedure were studied. Their predominant symptoms were unremitting back and leg pain and all had pre and postoperative anti-fungal therapy under microbiologist supervision. The operative time ranged from 137minutes to 260minutes (mean: 213.4minutes). The mean blood loss was 160mL (range: 100-200mL). There were no perioperative complications. At follow-up all showed major improvement in pain and ambulatory status. CT scan showed radiological stability for all patients at 6-12 months. Our preliminary results showed stand-alone anterior debridement and spinal re-construction with cement through mini-open OLIF approach might be a safe and effective option for patients with spinal fungal infection and major comorbidities.
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Affiliation(s)
- Z Wang
- Division of Orthopedics, Centre Hospitalier de l'Université de Montréal (CHUM), University of Montreal, 1051 Sanguinet Street, Montreal, QC H2X 3E4 Canada
| | - V T Truong
- Division of Orthopedics, Centre Hospitalier de l'Université de Montréal (CHUM), University of Montreal, 1051 Sanguinet Street, Montreal, QC H2X 3E4 Canada.
| | - D Shedid
- Division of Neurosurgery, Centre Hospitalier de l'Université de Montréal (CHUM), University of Montreal, 1051 Sanguinet Street, Montreal, QC H2X 3E4 Canada
| | - N Newman
- Division of Orthopedics, Centre Hospitalier de l'Université de Montréal (CHUM), University of Montreal, 1051 Sanguinet Street, Montreal, QC H2X 3E4 Canada
| | - M Mc Graw
- Division of Orthopedics, Centre Hospitalier de l'Université de Montréal (CHUM), University of Montreal, 1051 Sanguinet Street, Montreal, QC H2X 3E4 Canada
| | - G Boubez
- Division of Orthopedics, Centre Hospitalier de l'Université de Montréal (CHUM), University of Montreal, 1051 Sanguinet Street, Montreal, QC H2X 3E4 Canada
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Surgical complications and re-operation rates in spinal metastases surgery: a systematic review. 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 2020; 30:2791-2799. [PMID: 33184702 DOI: 10.1007/s00586-020-06647-6] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/21/2020] [Revised: 09/10/2020] [Accepted: 10/20/2020] [Indexed: 12/15/2022]
Abstract
OBJECTIVE The goal of this study was to review the incidence of complications and unplanned re-operations after surgery for metastatic spinal tumors. BACKGROUND The spinal column is the most common osseous site for metastatic spread. The goals of the treatment of spinal metastases are largely palliative. The surgical aims include establishing a diagnosis, providing stability, relieving neurological compression and deterioration, decreasing pain and increasing patient independence. Patients with spinal metastases who undergo surgery are considered high risk, with higher morbidity and mortality rates. MATERIALS AND METHODS A systematic review was undertaken; PubMed and Embase databases were searched between (2010-2020) for relevant publications in English language with the following search items: metastasis OR metastases AND spine AND surgery AND complications OR revision. Using a standard PRISMA template, 2293 articles were identified. Full-text articles of interest were assessed for inclusion criteria of greater than 30 patients. RESULTS A final number of 19 articles fully met the search criteria. Four were level II evidence, and the remaining were level III/IV. Surgical site infection 6.5% (135/2088) was reported as the main complication following surgery for spinal metastases followed by neurological deterioration 3.3% (53/1595) and instrumentation failure 2.0% (30/1501). Re-operation rate was 8.3% (54/651), with SSI (27.8%) being the most common reason for revision surgery. CONCLUSION Patients with spinal metastases frequently present with complex therapeutic challenges requiring multidisciplinary team assessment. Surgical site infection (6.5%) was the main reason for a re-operation in patients undergoing surgery for spinal metastases.
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24
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Kumar N, Patel R, Tan JH, Song J, Pandita N, Hey DHW, Lau LL, Liu G, Thambiah J, Wong HK. Symptomatic Construct Failure after Metastatic Spine Tumor Surgery. Asian Spine J 2020; 15:481-490. [PMID: 33108849 PMCID: PMC8377214 DOI: 10.31616/asj.2020.0166] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/12/2020] [Accepted: 07/04/2020] [Indexed: 12/23/2022] Open
Abstract
Study Design Retrospective cohort study. Purpose To evaluate the incidence and presentation of symptomatic failures (SFs) after metastatic spine tumor surgery (MSTS). To identify the associated risk factors. To categorize SFs based on the management in these patients. Overview of Literature Few studies have reported on the incidence (1.9%–16%) and risk factors of SF after MSTS. It is unclear whether all SFs, occurring in MSTS-patients, result in revision surgery. Methods We conducted a retrospective analysis on 288 patients (246 for final analysis) who underwent MSTS between 2005–2015. Data collected were demographics and peri/postoperative clinical and radiological features. Early and late radiological SF were defined as presentation before and after 3 months from index surgery, respectively. Univariate and multivariate models of competing risk regression analysis were designed to determine the risk factors for SF with death as a competing event. Results We observed 14 SFs (5.7%) in 246 patients; 10 (4.1%) underwent revision surgery. Median survival was 13.4 months. The mean age was 58.8 years (range, 21–87 years); 48.4% were women. The median time to failure was 5 months (range, 1–60 months). Patients with SF were categorized into three groups: (1) SF when the primary implant was revised (n=5, 35.7%); (2) peri-construct progression of disease requiring extension (n=5, 35.7%); and (3) SFs that did not warrant revision (n=4, 28.5%). Four patients (28.5%) presented with early failure. SF commonly occurred at the implant-bone interface (9/14) and all patients had a spinal instability neoplastic score (SINS) >7. Thirteen patients (92.8%) who developed failure had fixation spanning junctional regions. Multivariate competing risk regression showed that preoperative Eastern Cooperative Oncology Group score was a significant risk factor for implant failure (adjusted sub-hazard ratio, 7.0; 95% confidence interval, 1.63–30.07; p<0.0009). Conclusions The incidence of SF (5.7%) was low in patients undergoing MSTS although these patients did not undergo spinal fusion. Preoperative ambulators involved a 7 times higher risk of failure than non-ambulators. Preoperative SINS >7 and fixations spanning junctional regions were associated with SF. Majority of construct failures occurred at the implant-bone interface.
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Affiliation(s)
- Naresh Kumar
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | - Ravish Patel
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | - Jiong Hao Tan
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | - Joshua Song
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | - Naveen Pandita
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | | | - Leok Lim Lau
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | - Gabriel Liu
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | - Joseph Thambiah
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | - Hee-Kit Wong
- Department of Orthopaedic Surgery, National University Health System, Singapore
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Kumar N, Patel R, Tan BWL, Tan JH, Pandita N, Sonawane D, Lopez KG, Wai KL, Hey HWD, Kumar A, Liu G. Asymptomatic Construct Failure after Metastatic Spine Tumor Surgery: A New Entity or a Continuum with Symptomatic Failure? Asian Spine J 2020; 15:636-649. [PMID: 33108848 PMCID: PMC8561154 DOI: 10.31616/asj.2020.0167] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/13/2020] [Accepted: 06/09/2020] [Indexed: 11/23/2022] Open
Abstract
Study Design Retrospective cohort study. Purpose To study the incidence, onset, underlying mechanism, clinical course, and factors leading to asymptomatic construct failure (AsCF) after metastatic spinal tumor surgery (MSTS). Overview of Literature The reported incidence rates for implant and/or construct failure after MSTS are low (1.9%–16%) and based on clinical presentations and revisions required for symptomatic failures (SFs). AsCF after MSTS has not been reported. Methods We conducted a retrospective analysis of 288 patients (246 for final analysis) who underwent MSTS between 2005–2015. Data collected were demographics and peri/postoperative clinical and radiological features. Early and late radiological AsCF were defined as presentation before and after 3 months, respectively. We analyzed patients with AsCF for risk factors and survival duration by performing competing risk regression analyses where AsCF was the event of interest, with SF and death as competing events. Results We observed AsCF in 41/246 patients (16.7%). The mean time to onset of AsCF after MSTS was 2 months (range, 1–9 months). Median survival of patients with AsCF was 20 and 41 months for early and late failures, respectively. Early AsCF accounted for 80.5% of cases, while late AsCF accounted for 19.5%. The commonest radiologically detectable AsCF mechanism was angular deformity (increase in kyphus) in 29 patients. Increasing age (p<0.02) and primary breast (13/41, 31.7%) (p<0.01) tumors were associated with higher AsCF rates. There was a non-significant trend towards AsCF in patients with a spinal instability neoplastic score ≥7, instrumentation across junctional regions, and construct lengths of 6–9 levels. None of the patients with AsCF underwent revision surgery. Conclusions AsCF after MSTS is a distinct entity. Most patients with early AsCF did not require intervention. Patients who survived and maintained ambulation for longer periods had late failure. Increasing age and tumors with a better prognosis have a higher likelihood of developing AsCF. AsCF is not necessarily an indication for aggressive/urgent intervention.
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Affiliation(s)
- Naresh Kumar
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | - Ravish Patel
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | - Barry Wei Loong Tan
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | - Jiong Hao Tan
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | - Naveen Pandita
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | - Dhiraj Sonawane
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | - Keith Gerard Lopez
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | - Khin Lay Wai
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | | | - Aravind Kumar
- Department of Orthopaedic Surgery, National University Health System, Singapore
| | - Gabriel Liu
- Department of Orthopaedic Surgery, National University Health System, Singapore
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Di Perna G, Cofano F, Mantovani C, Badellino S, Marengo N, Ajello M, Comite LM, Palmieri G, Tartara F, Zenga F, Ricardi U, Garbossa D. Separation surgery for metastatic epidural spinal cord compression: A qualitative review. J Bone Oncol 2020; 25:100320. [PMID: 33088700 PMCID: PMC7559860 DOI: 10.1016/j.jbo.2020.100320] [Citation(s) in RCA: 20] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/05/2020] [Revised: 08/31/2020] [Accepted: 09/07/2020] [Indexed: 02/07/2023] Open
Abstract
Separation surgery is a new concept for metastatic spinal cord compression treatment. Stereotactic radiosurgery increased local control, overcoming radio-resistance’s idea. The surgery goal shifted towards creating targets for radiations avoiding cord damages. Minimal invasive strategies could allow quick return to systemic therapies.
Introduction The new concept of separation surgery has changed the surgical paradigms for the treatment of metastatic epidural spinal cord compression (MESCC), shifting from aggressive cytoreductive surgery towards less invasive surgery with the aim to achieve circumferential separation of the spinal cord and create a safe target for high dose Stereotactic Body Radiation Therapy (SBRT), which turned out to be the real game-changer for disease’s local control. Discussion In this review a qualitative analysis of the English literature has been performed according to the rating of evidence, with the aim to underline the increasingly role of the concept of separation surgery in MESCC treatment. A review of the main steps in the evolution of both radiotherapy and surgery fields have been described, highlighting the important results deriving from their integration. Conclusion Compared with more aggressive surgical approaches, the concept of separation surgery together with the advancements of radiotherapy and the use of SBRT for the treatment of MESCC showed promising results in order to achieve a valuable local control while reducing surgical related morbidities and complications.
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Key Words
- CTV, Clinical tumor volume
- Carbon fiber/PEEK cement
- ECOG PS, Eastern Cooperative Oncology Group Performance Status Scale
- ESCC, Epidural Spinal Cord Compression
- Epidural spinal cord compression
- GTV, Gross tumor volume
- KPS, Karnofsky Performance Status
- LC, Local Control
- LITT, Laser Interstitial Thermal Therapy
- MAS, Minimal Access Spine
- MESCC, Metastatic Epidural Spinal Cord Compression
- MIS techniques
- MIS, Minimally Invasive Surgical
- NSCLC, Non-Small Cell Lung Cancer
- NSE, Neurologic Stability Epidural compression
- PEEK, Polyetheretherketone
- PLL, Posterior Longitudinal Ligament
- PMMA, Poly-Methyl-Methacrylate
- PRV, Spinal cord planning risk volume
- PTV, Planning target volume
- SBRT, Stereotactic Body Radiation Therapy
- SINS, Spinal Instability Neoplastic Score
- SRS, Stereotactic Radiosurgery
- SS, Separation Surgery
- Separation surgery
- Spinal metastases
- Stereotactic body radiation therapy
- cEBRT, conventional External Beam Radiation Therapy
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Affiliation(s)
- Giuseppe Di Perna
- Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Turin, Italy
| | - Fabio Cofano
- Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Turin, Italy
- Spine Surgery, Humanitas Gradenigo, Turin, Italy
- Corresponding author at: Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Via Cherasco 15, 10126 Turin, Italy.
| | - Cristina Mantovani
- Radiation Oncology Unit, Department of Oncology, University of Turin and Città della Salute e della Scienza Hospital, Via Genova 3, 10126 Turin, Italy
| | - Serena Badellino
- Radiation Oncology Unit, Department of Oncology, University of Turin and Città della Salute e della Scienza Hospital, Via Genova 3, 10126 Turin, Italy
| | - Nicola Marengo
- Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Turin, Italy
| | - Marco Ajello
- Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Turin, Italy
| | - Ludovico Maria Comite
- Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Turin, Italy
| | - Giuseppe Palmieri
- Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Turin, Italy
| | - Fulvio Tartara
- Neurosurgery Unit, Istituto Clinico Città Studi, Milan, Italy
| | - Francesco Zenga
- Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Turin, Italy
| | - Umberto Ricardi
- Radiation Oncology Unit, Department of Oncology, University of Turin and Città della Salute e della Scienza Hospital, Via Genova 3, 10126 Turin, Italy
| | - Diego Garbossa
- Department of Neuroscience “Rita Levi Montalcini”, Neurosurgery Unit, University of Turin, Turin, Italy
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27
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Barzilai O, McLaughlin L, Lis E, Reiner AS, Bilsky MH, Laufer I. Utility of Cement Augmentation via Percutaneous Fenestrated Pedicle Screws for Stabilization of Cancer-Related Spinal Instability. Oper Neurosurg (Hagerstown) 2020; 16:593-599. [PMID: 30508168 DOI: 10.1093/ons/opy186] [Citation(s) in RCA: 29] [Impact Index Per Article: 7.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/01/2018] [Accepted: 09/20/2018] [Indexed: 12/31/2022] Open
Abstract
BACKGROUND Cancer patients experience pathological fractures and the typical poor bone quality frequently complicates stabilization. Methods for overcoming screw failure include utilization of fenestrated screws that permit the injection of bone cement into the vertebral body to augment fixation. OBJECTIVE To evaluate the safety and efficacy of cement augmentation via fenestrated screws. METHODS A retrospective chart review of patients with neoplastic spinal instability who underwent percutaneous instrumented stabilization with cement augmentation using fenestrated pedicle screws. Patient demographic and treatment data and intraoperative and postoperative complications were evaluated by chart review and radiographic evaluation. Prospectively collected patient reported outcomes (PRO) were evaluated at short (2- <6 mo) and long term (6-12 mo). RESULTS Cement augmentation was performed in 216 fenestrated pedicle screws in 53 patients. Three patients required reoperation. One patient had an asymptomatic screw fracture at 6 mo postoperatively that did not require intervention. No cases of lucency around the pedicle screws, rod fractures, or cement extravasation into the spinal canal were observed. Eight cases of asymptomatic, radiographically-detected venous extravasation were found. Systemic complications included a pulmonary cement embolism, a lower extremity deep vein thrombosis, and a postoperative mortality secondary to pulmonary failure from widespread metastatic pulmonary infiltration. Significant improvement in PRO measures was found in short- and long-term analysis. CONCLUSION Cement augmentation of pedicle screws is an effective method to enhance the durability of spinal constructs in the cancer population. Risks include cement extravasation into draining blood vessels, but risk of clinically significant extravasation appears to be exceedingly low.
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Affiliation(s)
- Ori Barzilai
- Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Lily McLaughlin
- Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Eric Lis
- Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, New York
| | - Anne S Reiner
- Department of Epidemiology and Biostatistics, Memorial Sloan-Kettering Cancer Center, New York, New York
| | - Mark H Bilsky
- Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, New York.,Department of Neurological Surgery, Weill Cornell Medical College, New York, New York
| | - Ilya Laufer
- Department of Neurosurgery, Memorial Sloan Kettering Cancer Center, New York, New York.,Department of Neurological Surgery, Weill Cornell Medical College, New York, New York
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Chang SY, Mok S, Park SC, Kim H, Chang BS. Treatment Strategy for Metastatic Spinal Tumors: A Narrative Review. Asian Spine J 2020; 14:513-525. [PMID: 32791769 PMCID: PMC7435309 DOI: 10.31616/asj.2020.0379] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 07/21/2020] [Accepted: 07/22/2020] [Indexed: 12/29/2022] Open
Abstract
Metastatic spinal tumors are common, and their rising incidence can be attributed to the expanding aging population and increased survival rates among cancer patients. The decision-making process in the treatment of spinal metastasis requires a multidisciplinary approach that includes medical and radiation oncology, surgery, and rehabilitation. Various decision-making systems have been proposed in the literature in order to estimate survival and suggest appropriate treatment options for patients experiencing spinal metastasis. However, recent advances in treatment modalities for spinal metastasis, such as stereotactic radiosurgery and minimally invasive surgical techniques, have reshaped clinical practices concerning patients with spinal metastasis, making a demand for further improvements on current decision-making systems. In this review, recent improvements in treatment modalities and the evolution of decision-making systems for metastatic spinal tumors are discussed.
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Affiliation(s)
- Sam Yeol Chang
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Sujung Mok
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Sung Cheol Park
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Hyoungmin Kim
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea
| | - Bong-Soon Chang
- Department of Orthopedic Surgery, Seoul National University Hospital, Seoul, Korea
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29
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Barzilai O, Laufer I, Robin A, Xu R, Yamada Y, Bilsky MH. Hybrid Therapy for Metastatic Epidural Spinal Cord Compression: Technique for Separation Surgery and Spine Radiosurgery. Oper Neurosurg (Hagerstown) 2020; 16:310-318. [PMID: 29889256 DOI: 10.1093/ons/opy137] [Citation(s) in RCA: 50] [Impact Index Per Article: 12.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2017] [Accepted: 06/04/2018] [Indexed: 12/25/2022] Open
Abstract
BACKGROUND Despite major advances in radiation and systemic treatments, surgery remains a critical step in the multidisciplinary treatment of metastatic spinal cord tumors. OBJECTIVE To describe the indications, rationale, and technique of "hybrid therapy" (separation surgery and concomitant spine stereotactic radiosurgery [SRS]) along with practical nuances. METHODS Separation surgery describes a posterolateral approach for circumferential epidural decompression and stabilization. The goal is to decompress the spinal cord, stabilize the spine, and create adequate separation between the neural elements and the tumor for SRS to achieve durable tumor control. RESULTS A transpedicular route to achieve ventrolateral access and limited resection of the tumorous vertebral body is carried out. In the setting of high-grade cord compression, caution must be taken when performing the tumor decompression. "Separation" of the ventral epidural tumor component anteriorly creates space for concomitant SRS while a simple laminectomy would not adequately achieve this goal. Dissection of the posterior longitudinal ligament allows maximal ventral decompression. Gross total tumor resection is not crucial for durable tumor control using the "hybrid therapy" model. Thus, attempts at ventral tumor resection may unnecessarily increase operative morbidity. Cement augmentation of the construct or vertebral body may improve construct stability. CT myelogram is the preferred exam for postoperative SRS planning. Radiosurgical planning constitutes a multidisciplinary effort and guidelines for contouring in the postoperative setting have recently become available. CONCLUSION Separation surgery is an effective, well-tolerated, and reproducible surgery. It provides safe margins for concomitant SRS. Combined, this "Hybrid Therapy" allows durable local control, maintenance of spinal stability, and palliation of symptoms, while minimizing operative morbidity.
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Affiliation(s)
- Ori Barzilai
- Department of Neurosurgery, Memorial Sloan-Kettering Cancer Center, New York, New York
| | - Ilya Laufer
- Department of Neurosurgery, Memorial Sloan-Kettering Cancer Center, New York, New York.,Department of Neurological Surgery, Weill Cornell Medical College, New York, New York
| | - Adam Robin
- Department of Neurosurgery, Memorial Sloan-Kettering Cancer Center, New York, New York
| | - Ran Xu
- Department of Neurosurgery, Memorial Sloan-Kettering Cancer Center, New York, New York.,Department of Neurosurgery, Charité - Universitätsmedizin Berlin, Berlin, Germany
| | - Yoshiya Yamada
- Department of Radiation Oncology, Memorial Sloan-Kettering Cancer Center, New York, New York
| | - Mark H Bilsky
- Department of Neurosurgery, Memorial Sloan-Kettering Cancer Center, New York, New York.,Department of Neurological Surgery, Weill Cornell Medical College, New York, New York
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30
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Wong YC, Chau WWJ, Kwok KO, Law SW. Incidence and Risk Factors for Implant Failure in Spinal Metastasis Surgery. Asian Spine J 2020; 14:878-885. [PMID: 32693440 PMCID: PMC7788377 DOI: 10.31616/asj.2020.0034] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/29/2020] [Accepted: 06/03/2020] [Indexed: 12/26/2022] Open
Abstract
STUDY DESIGN Retrospective study. PURPOSE To investigate the incidence of symptomatic and asymptomatic implant failure in spinal metastasis surgery and identify potential risk factors. OVERVIEW OF LITERATURE Surgical stabilization with instrumentation is an established method for the treatment of spinal metastasis. However, very few studies have investigated the incidence and risk factors for implant failure after spinal instrumentation surgery for the treatment of spinal metastasis. METHODS This study recruited 88 patients who received surgical stabilization with instrumentation for the treatment of spinal metastasis. Their medical records and postoperative X-rays were reviewed for evidence of implant failure. Statistical analysis with logistic regression was performed to assess nine potential risk factors for the development of implant failure, including patient's age at operation, gender, survival, primary tumor, spinal level involved, construct length, decompression levels, fusion material utilization, and radiotherapy application either before or after surgery, to identify potential contributing risk factors. RESULTS Implant failure was identified in nine out of 88 cases (10.2%) with two cases requiring implant removal: one case included a progressive kyphosis that resulted in nonhealing sore and the other involved a deep-seated wound infection that spread to the implants. Another case required wound debridement due to superficial wound infection. The remaining six cases were asymptomatic, despite postoperative X-rays demonstrating evidence of implant failure. No patient required implant revision. Logistic regression analysis demonstrated that patients who received radiotherapy either before or after surgery were less likely to develop implant failure. CONCLUSIONS The development of radiological implant failure following surgical treatment of spinal metastasis is common. However, symptomatic implant failure leading to revision surgery is uncommon. Our findings suggest that radiotherapy, either before or after spinal surgery, is not associated with the development of implant failure.
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Affiliation(s)
- Yu Chung Wong
- Department of Orthopedics and Traumatology, Prince of Wales Hospital, Hong Kong SAR, China
| | - Wai Wang Jacky Chau
- Department of Orthopedics and Traumatology, The Chinese University of Hong Kong, Hong Kong SAR, China
| | - Kin On Kwok
- Department of Orthopedics and Traumatology, Prince of Wales Hospital, Hong Kong SAR, China
| | - Sheung Wai Law
- Department of Orthopedics and Traumatology, Prince of Wales Hospital, Hong Kong SAR, China
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31
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Transpedicular Vertebrectomy With Circumferential Spinal Cord Decompression and Reconstruction for Thoracic Spine Metastasis: A Consecutive Case Series. Spine (Phila Pa 1976) 2020; 45:E820-E828. [PMID: 32080011 DOI: 10.1097/brs.0000000000003450] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Retrospective case series. OBJECTIVE To study the feasibility, outcomes, and complications of transpedicular vertebrectomy (TPV), and reconstruction for metastatic lesions to the thoracic spine. SUMMARY OF BACKGROUND DATA Metastatic lesions to the thoracic spine may need surgical treatment requiring anterior-posterior decompression/stabilization. Anterior reconstruction may be performed using poly methyl meth acrylate (PMMA) cement or cages. Use of cement has been reported to be associated with complications. METHODS From 2008 to 2016, consecutive cases (single surgeon) undergoing TPV for thoracic spine metastasis (T2-12) were included. Demographic, surgical, and clinical data were collected through chart review. MRI, CT, positron emission tomography images were used to identify extent of disease, epidural spinal cord compression (ESCC), and degree of vertebral body collapse. Hall-Wellner confidence band was used for the survival curve. RESULTS Ninety six patients were studies with a median age 60 years. Most patients 56 (58%) presented with mechanical pain. 29% cases had lung metastasis. Single level TPV was performed in 73 patients (76%). Anterior reconstruction included PMMA in 78 patients (81.25%), and titanium cage in 18 patients (18.25%). Frankel grade improvement was seen in 16 cases (P = 0.013). ESCC improved by a median of 5.9 mm (P < 0.001). Kyphosis reduced by median of 7.5° (P < 0.001). VAS improved by median of seven (P < 0.001). Total 59 deaths were observed. The median survival time was estimated to be 6 months (95% CI: 5, 10). Surgical outcome and complication rates are similar between the two construct types. Correction of kyphosis was seen to be slightly better with the use of PMMA. Overall 29.16% cases developed complications (11.4% major). Two cases developed neurological deficit following epidural hematoma requiring surgery. One case had instrumentation failure from cement migration, needing revision. CONCLUSION The result of our study shows significantly improved clinical and radiological outcomes for TPV for thoracic metastatic lesions. We also discuss some important steps for use of PMMA to avoid complications. LEVEL OF EVIDENCE 4.
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32
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Overview of Minimally Invasive Spine Surgery. World Neurosurg 2020; 142:43-56. [PMID: 32544619 DOI: 10.1016/j.wneu.2020.06.043] [Citation(s) in RCA: 36] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/06/2020] [Revised: 06/02/2020] [Accepted: 06/04/2020] [Indexed: 12/21/2022]
Abstract
Minimally invasive spine surgery (MISS) has continued to evolve over the past few decades, with significant advancements in technology and technical skills. From endonasal cervical approaches to extreme lateral lumbar interbody fusions, MISS has showcased its usefulness across all practice areas of the spine, with unique points of access to avoid pertinent neurovascular structures. Adult spine deformity has also recognized the importance of minimally invasive techniques in its ability to limit complications and to provide adequate sagittal alignment correction and improvements in patients' functional status. Although MISS has continued to make significant progress clinically, consideration must also be given to its economic impact and the learning curve surgeons experience in adding these procedures to their armamentarium. This review examines current innovations in MISS, as well as the economic impact and future directions of the field.
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33
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Hsiue PP, Kelley BV, Chen CJ, Stavrakis AI, Lord EL, Shamie AN, Hornicek FJ, Park DY. Surgical treatment of metastatic spine disease: an update on national trends and clinical outcomes from 2010 to 2014. Spine J 2020; 20:915-924. [PMID: 32087389 DOI: 10.1016/j.spinee.2020.02.010] [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: 10/25/2019] [Revised: 01/30/2020] [Accepted: 02/13/2020] [Indexed: 02/03/2023]
Abstract
BACKGROUND CONTEXT Metastatic spine disease (MSD) is becoming more prevalent as medical treatment for cancers advance and extend survival. More MSD patients are treated surgically to maintain neurological function, ambulation, and quality of life. PURPOSE The purpose of this study was to use a large, nationally representative database to examine the trends, patient outcomes, and health-care resource utilization associated with surgical treatment of MSD. DESIGN This was an epidemiologic study using national administrative data from the Nationwide Readmissions Database (NRD). PATIENT SAMPLE All patients in the NRD from 2010 to 2014 who underwent spinal surgery were included in the study. OUTCOME MEASURES Mortality, blood transfusion, complications, length of stay, cost, and discharge location during index hospitalization as well as hospital readmission and revision surgery within 90-days of surgery were analyzed. METHODS International Classification of Diseases, Ninth Revision, (ICD-9) codes was used to identify patients of interest within the NRD from 2010 to 2014. Patients were separated into two cohorts - those with MSD and those without. Trends for surgical treatment of MSD were assessed and outcomes measures for both cohorts were analyzed and compared. RESULTS The number of surgical treatments for MSD increased from 6,007 in 2010 to 7,032 in 2014 (p-trend<.0001) which represented a 17.1% increase. During index hospitalization, MSD patients had an increased risk of mortality (odds ratio [OR]=3.22, 95% confidence interval [CI]: 2.85-3.63, p<.0001), blood transfusion (OR=2.93, 95% CI: 2.66-3.23, p<.0001), any complication (OR=1.24, 95% CI: 1.18-1.31, p<.0001), and discharge to skilled nursing facility (OR=1.51, 95% CI:1.41-1.61, p<.0001). MSD patients had longer average length of stay (13.05 vs. 4.56 days, p<.0001) and cost ($49,421.75 vs. $26,190.37, p<.0001) during index hospitalization. Furthermore, MSD patients had an increased risk of hospital readmission (OR=2.82, 95% CI: 2.68-2.96, p<.0001), readmission for surgical site infection (OR=2.38, 95% CI: 2.20-2.58, p<.0001), and readmission with neurologic deficits (OR=1.62, 95% CI: 1.27-2.06, p<.0001) despite a decreased risk of revision fusion (OR=0.71, 95% CI: 0.53-0.96, p=.026). CONCLUSIONS The number of MSD patients who undergo surgical treatments is increasing. Not only do these patients have worse outcomes during index hospitalization, but they are also at an increased risk of hospital readmission for surgical site infection and neurologic complications. These findings stress the need for multidisciplinary perioperative treatment plans that mitigate risks and facilitate quick, effective recovery in these unique, at-risk patients.
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Affiliation(s)
- Peter P Hsiue
- Department of Orthopedic Surgery, David Geffen School of Medicine at the University of California Los Angeles, 1250 16th St Suite 3142, Santa Monica, Los Angeles, CA, USA
| | - Benjamin V Kelley
- Department of Orthopedic Surgery, David Geffen School of Medicine at the University of California Los Angeles, 1250 16th St Suite 3142, Santa Monica, Los Angeles, CA, USA
| | - Clark J Chen
- Department of Orthopedic Surgery, David Geffen School of Medicine at the University of California Los Angeles, 1250 16th St Suite 3142, Santa Monica, Los Angeles, CA, USA
| | - Alexandra I Stavrakis
- Department of Orthopedic Surgery, David Geffen School of Medicine at the University of California Los Angeles, 1250 16th St Suite 3142, Santa Monica, Los Angeles, CA, USA
| | - Elizabeth L Lord
- Department of Orthopedic Surgery, David Geffen School of Medicine at the University of California Los Angeles, 1250 16th St Suite 3142, Santa Monica, Los Angeles, CA, USA
| | - Arya N Shamie
- Department of Orthopedic Surgery, David Geffen School of Medicine at the University of California Los Angeles, 1250 16th St Suite 3142, Santa Monica, Los Angeles, CA, USA
| | - Francis J Hornicek
- Department of Orthopedic Surgery, David Geffen School of Medicine at the University of California Los Angeles, 1250 16th St Suite 3142, Santa Monica, Los Angeles, CA, USA
| | - Don Y Park
- Department of Orthopedic Surgery, David Geffen School of Medicine at the University of California Los Angeles, 1250 16th St Suite 3142, Santa Monica, Los Angeles, CA, USA.
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Abstract
STUDY DESIGN Literature review. OBJECTIVE To provide an overview of the recent advances in minimal access surgery (MAS) for spinal metastases. METHODS Literature review. RESULTS Experience gained from MAS in the trauma, degenerative and deformity settings has paved the road for MAS techniques for spinal cancer. Current MAS techniques for the treatment of spinal metastases include percutaneous instrumentation, mini-open approaches for decompression and tumor resection with or without tubular/expandable retractors and thoracoscopy/endoscopy. Cancer care requires a multidisciplinary effort and adherence to treatment algorithms facilitates decision making, ultimately improving patient outcomes. Specific algorithms exist to help guide decisions for MAS for extradural spinal metastases. One major paradigm shift has been the implementation of percutaneous stabilization for treatment of neoplastic spinal instability. Percutaneous stabilization can be enhanced with cement augmentation for increased durability and pain palliation. Unlike osteoporotic fractures, kyphoplasty and vertebroplasty are known to be effective therapies for symptomatic pathologic compression fractures as supported by high level evidence. The integration of systemic body radiation therapy for spinal metastases has eliminated the need for aggressive tumor resection allowing implementation of MAS epidural tumor decompression via tubular or expandable retractors and preliminary data exist regarding laser interstitial thermal therapy and radiofrequency ablation for tumor control. Neuronavigation and robotic systems offer increased precision, facilitating the role of MAS for spinal metastases. CONCLUSIONS MAS has a significant role in the treatment of spinal metastases. This review highlights the current utilization of minimally invasive surgical strategies for treatment of spinal metastases.
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Affiliation(s)
- Ori Barzilai
- Memorial Sloan Kettering Cancer Center, New York, NY, USA
| | - Mark H. Bilsky
- Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Weill Cornell Medical College, New York, NY, USA
| | - Ilya Laufer
- Memorial Sloan Kettering Cancer Center, New York, NY, USA
- Weill Cornell Medical College, New York, NY, USA
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Cianfoni A, Distefano D, Scarone P, Pesce GA, Espeli V, La Barbera L, Villa T, Reinert M, Bonaldi G, Hirsch JA. Stent screw-assisted internal fixation (SAIF): clinical report of a novel approach to stabilizing and internally fixating vertebrae destroyed by malignancy. J Neurosurg Spine 2019; 32:507-518. [PMID: 31860813 DOI: 10.3171/2019.9.spine19711] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2019] [Accepted: 09/30/2019] [Indexed: 11/06/2022]
Abstract
OBJECTIVE Severe lytic cancerous lesions of the spine are associated with significant morbidity and treatment challenges. Stabilization and restoration of the axial load capability of the vertebral body (VB) are important to prevent or arrest vertebral collapse. Percutaneous stent screw-assisted internal fixation (SAIF), which anchors a VB stent/cement complex with pedicular screws to the posterior vertebral elements, is a minimally invasive, image-guided, 360° internal fixation technique that can be utilized in this patient cohort. The purpose of this study was to assess the feasibility, safety, and stabilization efficacy of VB reconstruction via the SAIF technique in a cohort of patients with extensive lytic vertebral lesions, who were considered to have an unstable or potentially unstable spine according to the Spinal Instability Neoplastic Score (SINS). METHODS This study was a retrospective assessment of a prospectively maintained database of a consecutive series of patients with neoplastic extensive extracompartmental osteolysis (Tomita type 4-6) of the VB treated with the SAIF technique. VB reconstruction was assessed on postprocedure plain radiographs and CT by two independent raters. Technical and clinical complications were recorded. Clinical and imaging follow-ups were assessed. RESULTS Thirty-five patients with extensive osteolytic metastatic lesions of the VB underwent 36 SAIF procedures. SAIF was performed as a stand-alone procedure in 31/36 cases and was associated with posterior surgical fixation in 5/36 (4/5 with decompressive laminectomy). In 1 case an epidural cement leak required surgical decompression. VB reconstruction was categorized as satisfactory (excellent or good rating) by the two raters in 34/36 cases (94.5%) with an interrater reliability of 94.4% (Cohen's kappa of 0.8). Follow-up, ranging from 1 to 30 months, was available for 30/36 levels. Long-term follow-up (6-30 months, mean 11.5 months) was available for 16/36 levels. Stability during follow-up was noted in 29/30 cases. CONCLUSIONS SAIF provides 360° nonfusion internal fixation that stabilizes the VB in patients with extensive lytic lesions that would otherwise be challenging to treat.
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Affiliation(s)
- Alessandro Cianfoni
- 1Department of Neuroradiology, Neurocenter of Southern Switzerland, Ospedale Regionale di Lugano
- 2Department of Interventional and Diagnostic Neuroradiology, Inselspital University Hospital of Bern
| | - Daniela Distefano
- 1Department of Neuroradiology, Neurocenter of Southern Switzerland, Ospedale Regionale di Lugano
| | - Pietro Scarone
- 3Department of Neurosurgery, Neurocenter of Southern Switzerland, Ospedale Regionale di Lugano
| | | | - Vittoria Espeli
- 5Medical Oncology, Oncology Institute of Southern Switzerland, Ospedale Regionale di Bellinzona e Valli, San Giovanni, Bellinzona, Switzerland
| | - Luigi La Barbera
- 6Laboratory of Biological Structure Mechanics, Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Milan, Italy
- 7Department of Mechanical Engineering, Polytechnique Montréal
- 8Sainte-Justine Clinical Hospital Center, Montréal, Quebec, Canada
| | - Tomaso Villa
- 6Laboratory of Biological Structure Mechanics, Department of Chemistry, Materials and Chemical Engineering "Giulio Natta", Politecnico di Milano, Milan, Italy
| | - Michael Reinert
- 3Department of Neurosurgery, Neurocenter of Southern Switzerland, Ospedale Regionale di Lugano
- 9Department of Neurosurgery, Inselspital University Hospital of Bern, Switzerland
| | | | - Joshua A Hirsch
- 11Department of Radiology, Massachusetts General Hospital, Harvard Medical School, Boston, Massachusetts
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Fanous AA, Tumialán LM, Wang MY. Kambin's triangle: definition and new classification schema. J Neurosurg Spine 2019; 32:390-398. [PMID: 31783346 DOI: 10.3171/2019.8.spine181475] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/06/2019] [Accepted: 08/21/2019] [Indexed: 11/06/2022]
Abstract
Kambin's triangle is an anatomical corridor used to access critical structures in a variety of spinal procedures. It is considered a safe space because it is devoid of vascular and neural structures of importance. Nonetheless, there is currently significant variation in the literature regarding the exact dimensions and anatomical borders of Kambin's triangle. This confusion was originally caused by leaving the superior articular process (SAP) unassigned in the description of the working triangle, despite Kambin identifying that structure in his original report. The SAP is the most relevant structure to consider when accessing the transforaminal corridor. Leaving the SAP unassigned has led to an open-handed application of the term "Kambin's triangle." That single eponym currently has two potential meanings, one meaning for endoscopic surgeons working through a corridor in the intact spine and a second meaning for surgeons accessing the disc space after a complete or partial facetectomy. Nevertheless, an anatomical corridor should have one consistent definition to clearly communicate techniques and use of instrumentation performed through that space. As such, the authors propose a new surgically relevant classification of this corridor. Assigning the SAP a border requires adding another dimension to the triangle, thereby transforming it into a prism. The term "Kambin's prism" indicates the assignment of a border to all relevant anatomical structures, allowing for a uniform definition of the 3D space. From there, the classification scheme considers the expansion of the corridor and the extent of bone removal, with a particular focus on the SAP.
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Affiliation(s)
- Andrew A Fanous
- 1Department of Neurosciences, INOVA Health System, Falls Church, Virginia
| | - Luis M Tumialán
- 2Department of Neurosurgery, The Barrow Neurological Institute, Phoenix, Arizona; and
| | - Michael Y Wang
- 3Department of Neurological Surgery, University of Miami Miller School of Medicine, Miami, Florida
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Park SJ, Lee KH, Lee CS, Jung JY, Park JH, Kim GL, Kim KT. Instrumented surgical treatment for metastatic spinal tumors: is fusion necessary? J Neurosurg Spine 2019; 32:456-464. [PMID: 31756698 DOI: 10.3171/2019.8.spine19583] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2019] [Accepted: 08/21/2019] [Indexed: 11/06/2022]
Abstract
OBJECTIVE The goal of this study was to evaluate the radiographic and clinical results of instrumentation surgery without fusion for metastases to the spine. METHODS Between 2010 and 2017, patients with spinal tumors who underwent instrumentation without fusion surgery were consecutively evaluated. Preoperative and postoperative clinical data were evaluated. Data were inclusive for last follow-up and just prior to death if the patient died. Instrumentation-related complications included screw migration, screw or rod breakage, cage migration, and screw loosening. RESULTS Excluding patients who died within 6 months, a total of 136 patients (140 operations) were recruited. The average follow-up duration was 16.5 months (median 12.4 months). The pain visual analog scale score decreased from 6.4 to 2.5 (p < 0.001) and the Eastern Cooperative Oncology Group scale score improved (p < 0.001). There were only 3 cases (2.1%) of symptomatic instrumentation-related complications that resulted in revisions. There were 6 cases of nonsymptomatic complications. The most common complication was screw migration or pull-out (5 cases). There were 3 cases of screw or rod breakage and 1 case of cage migration. Two-thirds of the cases of instrumentation-related complications occurred after 6 months, with a mean postoperative period of 1 year. CONCLUSIONS The current study reported successful outcomes with very low complication rates after nonfusion surgery for patients with spinal metastases, even among those who survived for more than 6 months. More than half of the instrumentation-related complications were asymptomatic and did not require revision. The results suggest that nonfusion surgery might be sufficient for a majority of patients with spinal metastases.
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Affiliation(s)
- Se-Jun Park
- 1Department of Orthopedic Surgery, Spine Center, Samsung Medical Center, Sungkyunkwan University School of Medicine
| | - Keun-Ho Lee
- 2Department of Orthopedic Surgery, Kangdong Sacred Heart Hospital, Hallym University College of Medicine; and
| | - Chong-Suh Lee
- 1Department of Orthopedic Surgery, Spine Center, Samsung Medical Center, Sungkyunkwan University School of Medicine
| | - Joon Young Jung
- 2Department of Orthopedic Surgery, Kangdong Sacred Heart Hospital, Hallym University College of Medicine; and
| | - Jin Ho Park
- 2Department of Orthopedic Surgery, Kangdong Sacred Heart Hospital, Hallym University College of Medicine; and
| | - Gab-Lae Kim
- 2Department of Orthopedic Surgery, Kangdong Sacred Heart Hospital, Hallym University College of Medicine; and
| | - Ki-Tack Kim
- 3Department of Orthopedic Surgery, Kyung Hee University Hospital at Gangdong, Kyung Hee University, Seoul, Republic of Korea
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Immediate Reconstruction of Oncologic Spinal Wounds Is Cost-Effective Compared with Conventional Primary Wound Closure. Plast Reconstr Surg 2019; 144:1182-1195. [DOI: 10.1097/prs.0000000000006170] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
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Delgado-López PD, Roldán-Delgado H, Corrales-García EM. Stereotactic body radiation therapy and minimally invasive surgery in the management of spinal metastases: a change in the paradigm. Neurocirugia (Astur) 2019; 31:119-131. [PMID: 31668627 DOI: 10.1016/j.neucir.2019.08.005] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/23/2019] [Revised: 07/26/2019] [Accepted: 08/26/2019] [Indexed: 11/25/2022]
Abstract
The main goal of treatment in spinal metastatic patients is local control of the disease, pain relief and the maintenance of ambulation. Traditionally, wide surgical resection of the tumour followed by adjuvant radiation and/or chemotherapy has been recommended. Currently, single-fraction or hypofractionated stereotactic body radiation therapy (SBRT) yields a one-year local control rate of over 95% with minimum morbidity, even for tumours previously considered radioresistant. In addition, by posterolateral and circumferential decompression and stabilisation of the spinal cord, it is feasible to create a 2 to 3 mm epidural margin between the dura mater and the tumour (separation surgery), enough to deliver safe and ablative doses of SBRT to the vertebrae. As these patients tend to be frail, such interventions should ideally be minimally invasive, thereby reducing surgical aggressiveness and helping to minimise the delay of any systemic therapies.
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Affiliation(s)
| | - Héctor Roldán-Delgado
- Servicio de Neurocirugía, Complejo Hospitalario Universitario de Canarias, Tenerife, España
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Laufer I, Bilsky MH. Advances in the treatment of metastatic spine tumors: the future is not what it used to be. J Neurosurg Spine 2019; 30:299-307. [PMID: 30835704 DOI: 10.3171/2018.11.spine18709] [Citation(s) in RCA: 37] [Impact Index Per Article: 7.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2018] [Accepted: 11/06/2018] [Indexed: 11/06/2022]
Abstract
An improved understanding of tumor biology, the ability to target tumor drivers, and the ability to harness the immune system have dramatically improved the expected survival of patients diagnosed with cancer. However, many patients continue to develop spine metastases that require local treatment with radiotherapy and surgery. Fortunately, the evolution of radiation delivery and operative techniques permits durable tumor control with a decreased risk of treatment-related toxicity and a greater emphasis on restoration of quality of life and daily function. Stereotactic body radiotherapy allows delivery of ablative radiation doses to the majority of spine tumors, reducing the need for surgery. Among patients who still require surgery for decompression of the spinal cord or spinal column stabilization, minimal access approaches and targeted tumor excision and ablation techniques minimize the surgical risk and facilitate postoperative recovery. Growing interdisciplinary collaboration among scientists and clinicians will further elucidate the synergistic possibilities among systemic, radiation, and surgical interventions for patients with spinal tumors and will bring many closer to curative therapies.
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Conti A, Acker G, Kluge A, Loebel F, Kreimeier A, Budach V, Vajkoczy P, Ghetti I, Germano' AF, Senger C. Decision Making in Patients With Metastatic Spine. The Role of Minimally Invasive Treatment Modalities. Front Oncol 2019; 9:915. [PMID: 31608228 PMCID: PMC6761912 DOI: 10.3389/fonc.2019.00915] [Citation(s) in RCA: 36] [Impact Index Per Article: 7.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2019] [Accepted: 09/03/2019] [Indexed: 12/18/2022] Open
Abstract
Spine metastases affect more than 70% of terminal cancer patients that eventually suffer from severe pain and neurological symptoms. Nevertheless, in the overwhelming majority of the cases, a spinal metastasis represents just one location of a diffuse systemic disease. Therefore, the best practice for treatment of spinal metastases depends on many different aspects of an oncological disease, including the assessment of neurological status, pain, location, and dissemination of the disease as well as the ability to predict the risk of disease progression with neurological worsening, benefits and risks associated to treatment and, eventually, expected survival. To address this need for a framework and algorithm that takes all aspects of care into consideration, we reviewed available evidence on the multidisciplinary management of spinal metastases. According to the latest evidence, the use of stereotactic radiosurgery (SRS) or stereotactic body radiotherapy (SBRT) for spinal metastatic disease is rapidly increasing. Indeed, aggressive surgical resection may provide the best results in terms of local control, but carries a significant rate of post-surgical morbidity whose incidence and severity appears to be correlated to the extent of resection. The multidisciplinary management represents, according to current evidence, the best option for the treatment of spinal metastases. Noteworthy, according to the recent literature evidence, cases that once required radical surgical resection followed by low-dose conventional radiotherapy, can now be more effectively treated by minimally invasive spinal surgery (MISS) followed by spine SRS with decreased morbidity, improved local control, and more durable pain control. This combination allows also extending this standard of care to patients that would be too sick for an aggressive surgical treatment.
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Affiliation(s)
- Alfredo Conti
- Department of Neurosurgery and Center for Stroke Research Berlin (CSB), Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany.,Berlin Institute of Health, Berlin, Germany
| | - Güliz Acker
- Department of Neurosurgery and Center for Stroke Research Berlin (CSB), Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany.,Berlin Institute of Health, Berlin, Germany.,Charité CyberKnife Center, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Anne Kluge
- Charité CyberKnife Center, Charité Universitätsmedizin Berlin, Berlin, Germany.,Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Franziska Loebel
- Department of Neurosurgery and Center for Stroke Research Berlin (CSB), Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany.,Berlin Institute of Health, Berlin, Germany.,Charité CyberKnife Center, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Anita Kreimeier
- Charité CyberKnife Center, Charité Universitätsmedizin Berlin, Berlin, Germany.,Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Volker Budach
- Charité CyberKnife Center, Charité Universitätsmedizin Berlin, Berlin, Germany.,Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
| | - Peter Vajkoczy
- Department of Neurosurgery and Center for Stroke Research Berlin (CSB), Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany.,Berlin Institute of Health, Berlin, Germany.,Charité CyberKnife Center, Charité Universitätsmedizin Berlin, Berlin, Germany
| | - Ilaria Ghetti
- Department of Neurosurgery, University of Messina, Messina, Italy
| | | | - Carolin Senger
- Charité CyberKnife Center, Charité Universitätsmedizin Berlin, Berlin, Germany.,Department of Radiation Oncology, Charité Universitätsmedizin Berlin, Corporate Member of Freie Universität Berlin, Humboldt-Universität zu Berlin, Berlin Institute of Health, Berlin, Germany
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Louie PK, Sayari AJ, Frank RM, An HS, Colman MW. Metastatic Renal Cell Carcinoma to the Spine and the Extremities. JBJS Rev 2019; 7:e7. [DOI: 10.2106/jbjs.rvw.19.00002] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
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Donnally CJ, Sheu JI, Bondar KJ, Mouhanna JN, Li DJ, Butler AJ, Rush AJ, Gjolaj JP. Is There a Correlation Between Preoperative or Postoperative Vitamin D Levels with Pseudarthrosis, Hardware Failure, and Revisions After Lumbar Spine Fusion? World Neurosurg 2019; 130:e431-e437. [PMID: 31238168 DOI: 10.1016/j.wneu.2019.06.109] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/09/2019] [Revised: 06/13/2019] [Accepted: 06/14/2019] [Indexed: 01/29/2023]
Abstract
BACKGROUND Vitamin D deficiency is a well-known cause of postoperative complications in patients undergoing orthopedic surgery. Orthopedic complications seen in vitamin D deficiency include nonunion, pseudarthrosis, and hardware failure. We seek to investigate the relationship between vitamin D deficiency and outcomes after lumbar spinal fusions. METHODS A retrospective patient chart review was conducted at a single center for all patients who underwent lumbar spinal fusions from January 2015 to September 2017 with preoperative or postoperative vitamin D laboratory values. We recorded demographics, social history, medications, pre-existing medical conditions, bone density (dual-energy x-ray absorptiometry) T-scores, procedural details, 1-year postoperative Visual Analog Score (VAS), documented pseudarthrosis, revisions, and hardware failure. A total of 150 patients were initially included in the cohort for analysis. RESULTS Overall, preoperative and postoperative vitamin D levels were not significantly associated with a vast majority of the patient characteristics studied, including comorbidities, medications, or surgical diagnoses (P > 0.05). Age at surgery was significantly associated with vitamin D levels; older patients had higher serum levels of vitamin D both preoperatively (P = 0.03) and postoperatively (P = 0.01). Those with a higher average body mass index had lower vitamin D in both groups (P = 0.02). Vitamin D levels were not significantly associated with rates of postoperative pseudarthrosis, revision, or hardware complications (P > 0.05). VAS pain score at 1 year and smoking status preoperatively or postoperatively were not associated with vitamin D levels (P > 0.05). CONCLUSIONS Both preoperative and postoperative vitamin D levels were not significantly associated with an increased or decreased risk of pseudarthrosis, revision surgery, hardware failure, or 1-year VAS pain score after lumbar spine fusion surgery.
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Affiliation(s)
- Chester J Donnally
- Department of Orthopedic Surgery, University of Miami Hospital, Miami, Florida, USA.
| | - Jonathan I Sheu
- Department of Education, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
| | - Kevin J Bondar
- Department of Education, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
| | - Joelle N Mouhanna
- Department of Education, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
| | - Deborah J Li
- Department of Education, University of Miami Leonard M. Miller School of Medicine, Miami, Florida, USA
| | - Alexander J Butler
- Department of Orthopedic Surgery, University of Miami Hospital, Miami, Florida, USA
| | - Augustus J Rush
- Department of Orthopedic Surgery, University of Miami Hospital, Miami, Florida, USA
| | - Joseph P Gjolaj
- Department of Orthopedic Surgery, University of Miami Hospital, Miami, Florida, USA
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Hsieh PC, Buser Z, Skelly AC, Brodt ED, Brodke D, Meisel HJ, Park JB, Yoon ST, Wang JC. Allogenic Stem Cells in Spinal Fusion: A Systematic Review. Global Spine J 2019; 9:22S-38S. [PMID: 31157144 PMCID: PMC6512196 DOI: 10.1177/2192568219833336] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/13/2022] Open
Abstract
STUDY DESIGN Systematic review. OBJECTIVES To review, critically appraise, and synthesize evidence on the use of allogenic stem cell products for spine fusion compared with other bone graft materials. METHODS Systematic searches of PubMed/MEDLINE, through October 31, 2018 and of EMBASE and ClinicalTrials.gov through April 13, 2018 were conducted for literature comparing allogenic stem cell sources for fusion in the lumbar or cervical spine with other fusion methods. In the absence of comparative studies, case series of ≥10 patients were considered. RESULTS From 382 potentially relevant citations identified, 6 publications on lumbar fusion and 5 on cervical fusion met the inclusion criteria. For lumbar arthrodesis, mean Oswestry Disability Index (ODI), visual analogue scale (VAS) pain score, and fusion rates were similar for anterior lumbar interbody fusion (ALIF) using allogenic multipotent adult progenitor cells (Map3) versus recombinant human bone morphogenetic protein-2 (rhBMP-2) in the one comparative lumbar study (90% vs 92%). Across case series of allogenic stem cell products, function and pain were improved relative to baseline and fusion occurred in ≥90% of patients at ≥12 months. For cervical arthrodesis across case series, stem cell products improved function and pain compared with baseline at various time frames. In a retrospective cohort study fusion rates were not statistically different for Osteocel compared with Vertigraft allograft (88% vs 95%). Fusion rates varied across time frames and intervention products in case series. CONCLUSIONS The overall quality (strength) of evidence of effectiveness and safety of allogenic stem cells products for lumbar and cervical arthrodesis was very low, meaning that we have very little confidence that the effects seen are reflective of the true effects.
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Affiliation(s)
| | - Zorica Buser
- University of Southern California, Los Angeles, CA, USA
| | | | | | - Darrel Brodke
- University of Utah School of Medicine, Salt Lake City, UT, USA
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Yahanda AT, Buchowski JM, Wegner AM. Treatment, complications, and outcomes of metastatic disease of the spine: from Patchell to PROMIS. ANNALS OF TRANSLATIONAL MEDICINE 2019; 7:216. [PMID: 31297381 DOI: 10.21037/atm.2019.04.83] [Citation(s) in RCA: 33] [Impact Index Per Article: 6.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Spinal metastases are common in patients with cancer. As cancer treatments improve and these patients live longer, the number who present with metastatic spine disease will increase. Treatment strategies for these patients continues to evolve. In particular, since the prospective randomized controlled study in 2005 by Patchell et al. showed increased survival with decompressive surgical treatment of spinal metastases, there is a growing body of literature focusing on surgical management and complications of surgery for this disease. Surgery is often one component of a multimodal treatment approach with chemotherapy and radiation, which makes it difficult to parse the benefits of each individual treatment in outcome studies. Additionally, there has been more recent emphasis placed on patient-reported outcomes (PRO) after treatment for metastatic spine disease. In this review, we summarize treatments of metastatic spinal disease, possible perioperative complications, and validated tools used to assess outcomes for these patients.
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Affiliation(s)
- Alexander T Yahanda
- Department of Orthopedic Surgery, Washington University, St. Louis, Missouri, USA
| | - Jacob M Buchowski
- Department of Orthopedic Surgery, Washington University, St. Louis, Missouri, USA
| | - Adam M Wegner
- Department of Orthopedic Surgery, Washington University, St. Louis, Missouri, USA
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Barzilai O, McLaughlin L, Lis E, Yamada Y, Bilsky MH, Laufer I. Outcome analysis of surgery for symptomatic spinal metastases in long-term cancer survivors. J Neurosurg Spine 2019; 31:285-290. [PMID: 31026814 DOI: 10.3171/2019.2.spine181306] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2018] [Accepted: 02/06/2019] [Indexed: 12/14/2022]
Abstract
OBJECTIVE As patients with metastatic cancer live longer, an increased emphasis is placed on long-term therapeutic outcomes. The current study evaluates outcomes of long-term cancer survivors following surgery for spinal metastases. METHODS The study population included patients surgically treated at a tertiary cancer center between January 2010 and December 2015 who survived at least 24 months postoperatively. A retrospective chart and imaging review was performed to collect data regarding patient demographics; tumor histology; type and extent of spinal intervention; radiation data, including treatment dose and field; long-term sequelae, including local tumor control; and reoperations, repeat irradiation, or postoperative kyphoplasty at a previously treated level. RESULTS Eighty-eight patients were identified, of whom 44 were male, with a mean age of 61 years. The mean clinical follow-up for the cohort was 44.6 months (range 24.2-88.3 months). Open posterolateral decompression and stabilization was performed in 67 patients and percutaneous minimally invasive surgery in 21. In the total cohort, 84% received postoperative adjuvant radiation and 27% were operated on for progression following radiation. Posttreatment local tumor progression was identified in 10 patients (11%) at the index treatment level and 5 additional patients had a marginal failure; all of these patients were treated with repeat irradiation with 5 patients requiring a reoperation. In total, at least 1 additional surgical intervention was performed at the index level in 20 (23%) of the 88 patients: 11 for hardware failure, 5 for progression of disease, 3 for wound complications, and 1 for postoperative hematoma. Most reoperations (85%) were delayed at more than 3 months from the index surgery. Wound infections or dehiscence requiring additional surgical intervention occurred in 3 patients, all of which occurred more than a year postoperatively. Kyphoplasty at a previously operated level was performed in 3 cases due to progressive fractures. CONCLUSIONS Durable tumor control can be achieved in long-term cancer survivors surgically treated for symptomatic spinal metastases with limited complications. Complications observed after long-term follow-up include local tumor recurrence/progression, marginal tumor control failures, early or late hardware complications, late wound complications, and progressive spinal instability or deformity.
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Affiliation(s)
| | | | | | - Yoshiya Yamada
- 3Radiation Oncology, Memorial Sloan Kettering Cancer Center; and
| | - Mark H Bilsky
- Departments of1Neurosurgery
- 4Department of Neurological Surgery, Weill Cornell Medical College, New York, New York
| | - Ilya Laufer
- Departments of1Neurosurgery
- 4Department of Neurological Surgery, Weill Cornell Medical College, New York, New York
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Longo M, De la Garza Ramos R, Gelfand Y, Echt M, Kinon MD, Yassari R. Incidence and Predictors of Hardware Failure After Instrumentation for Spine Metastasis: A Single-Institutional Series. World Neurosurg 2019; 125:e1170-e1175. [PMID: 30794977 DOI: 10.1016/j.wneu.2019.01.272] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2018] [Revised: 01/28/2019] [Accepted: 01/30/2019] [Indexed: 01/30/2023]
Abstract
OBJECTIVE We report a retrospective analysis of hardware failure in patients requiring instrumentation for spinal metastasis. METHODS In a retrospective study at a single institution, we identified 58 patients who underwent spinal instrumentation for metastasis from 2012 to 2018. Hardware failure was defined as screw pullout/loosening, cage migration, progressive kyphosis, or an otherwise-noticeable instrumentation deficit detectable on imaging. Risk factors for hardware failure with a P < 0.05 in in univariate were included in multivariate logistic regression models controlled for age, sex, and previously identified risk factors for hardware failure. RESULTS In total, 58 patients required instrumentation for metastatic spine disease. Median age was 60.2 years (interquartile range 49.0-66.3), 38 patients (65.5%) were male, and median follow-up was 8.1 months (interquartile range 3.1-20.7). Eight patients (13.8%) developed signs of hardware failure during follow-up, of whom 2 patients (3.4%) underwent operative revision. In univariate analysis, Eastern Cooperative Oncology Group performance status >2 (P = 0.049) and multiple myeloma lesions (P = 0.010) were significant predictors of failure. Both factors maintained significance in a multivariate logistic regression model controlled for age, sex, history of spine radiation, and number of fused levels with P = 0.047; odds ratio 12.7 (95% confidence interval 1.03-156.4) for Eastern Cooperative Oncology Group performance status over 2 and P = 0.012; odds ratio 31.5 (95% confidence interval 2.2-460.0) for multiple myeloma lesions. CONCLUSIONS The rate of hardware failure in this cohort was 13.8%, although operative revision rate was 3.4%. Spinal instrumentation in patients with poor preoperative functional status or multiple myeloma may be more likely to develop instrumentation failure.
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Affiliation(s)
- Michael Longo
- Spine Research Group, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York, USA
| | - Rafael De la Garza Ramos
- Spine Research Group, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York, USA; Department of Neurological Surgery, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York, USA
| | - Yaroslav Gelfand
- Spine Research Group, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York, USA; Department of Neurological Surgery, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York, USA
| | - Murray Echt
- Spine Research Group, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York, USA; Department of Neurological Surgery, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York, USA
| | - Merritt D Kinon
- Spine Research Group, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York, USA; Department of Neurological Surgery, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York, USA
| | - Reza Yassari
- Spine Research Group, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York, USA; Department of Neurological Surgery, Montefiore Medical Center/Albert Einstein College of Medicine, Bronx, New York, USA.
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Zhang M, Appelboom G, Ratliff JK, Soltys SG, Adler JR, Park J, Chang SD. Radiographic Rate and Clinical Impact of Pseudarthrosis in Spine Radiosurgery for Metastatic Spinal Disease. Cureus 2018; 10:e3631. [PMID: 30705790 PMCID: PMC6349573 DOI: 10.7759/cureus.3631] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022] Open
Abstract
Purpose Pseudarthrosis within the spine tumor population is increased from perioperative radiation and complex stabilization for invasive and recurrent pathology. We report the radiographic and clinical rates of pseudarthrosis following multiple courses of instrumented fusion and perioperative stereotactic radiosurgery (SRS). Methods We performed a single institution review of 418 patients treated with non-isocentric SRS for spine between October 2002 and January 2013, identifying those with spinal instrumentation and greater than six months of follow-up. Surgical history, radiation planning, and radiographic outcomes were documented. Results Eleven patients who met criteria for inclusion underwent 21 sessions of spinal SRS and 16 instrumented operations. Radiographic follow-up was 48.9 months; 3/11 (27%) were with radiographic hardware failure, and one (9%) separate case ultimately warranted externalization due to tumor recurrence. SRS was administered to treat progression of disease in 12/21 (57%) procedures, and residual lesions in 7/11 (64%) procedures. Following first and second SRS, 8/11 (73%) and 2/7 (29%) patients were with symptomatic improvement, respectively. Conclusion Risk of pseudarthrosis following SRS for patients with oncologic spinal lesions will become increasingly apparent with the optimized management of and survival from spinal pathologies. We highlight how the need for local control outpaces the risk of instrumentation failure.
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Affiliation(s)
- Michael Zhang
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, USA
| | - Geoff Appelboom
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, USA
| | - John K Ratliff
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, USA
| | - Scott G Soltys
- Department of Radiation Oncology, Stanford University School of Medicine, Stanford, USA
| | - John R Adler
- Department of Radiation Oncology, Stanford University Medical Center, Stanford, CA, USA
| | - Jon Park
- Department of Neurosurgery, Stanford University Medical Center, Stanford, USA
| | - Steven D Chang
- Department of Neurosurgery, Stanford University School of Medicine, Stanford, USA
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Minimal Access Surgery for Spinal Metastases: Prospective Evaluation of a Treatment Algorithm Using Patient-Reported Outcomes. World Neurosurg 2018; 120:e889-e901. [PMID: 30189298 DOI: 10.1016/j.wneu.2018.08.182] [Citation(s) in RCA: 31] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/25/2018] [Revised: 08/22/2018] [Accepted: 08/23/2018] [Indexed: 12/15/2022]
Abstract
BACKGROUND Minimal access surgery (MAS) allows for an early return to systemic and radiation therapy in patients with cancer, leading to its increasing usage in the treatment of spinal metastases. Systematic examination of surgical indications resulted in the development of an algorithm for implementation of MAS in the treatment of spinal metastases. The objective of the present study was to evaluate a spine tumor MAS treatment algorithm using patient-reported outcomes for patients with cancer undergoing treatment of spinal metastases. METHODS We performed a prospective cohort study of patients who had undergone spinal percutaneous instrumented stabilization with the addition of MAS spinal cord or nerve root decompression and/or kyphoplasty when indicated at a tertiary cancer center from December 2013 to August 2016. Validated patient-reported outcome measures, including the Brief Pain Inventory and the MD Anderson Symptom Inventory-spine module, were used. The patient-reported outcome measures were collected and compared at baseline, 3 months, and long-term follow-up (range, 4.5-12 months). RESULTS A total of 51 patients were included. MAS resulted in a statistically significant decrease in the severity of pain and improved activity, ability to work, and enjoyment of life (P < 0.001). The improvement was reported at the short- and long-term follow-up points. CONCLUSIONS We present our treatment algorithm for MAS implementation in the treatment of thoracolumbar spinal metastases. Prospectively collected data have demonstrated that using this algorithm, MAS surgery for the treatment of spinal metastases results in significant decreases in pain severity and symptom interference with daily activities.
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