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Amen TB, Akosman I, Subramanian T, Johnson MA, Rudisill SS, Song J, Maayan O, Barber LA, Lovecchio FC, Qureshi S. Postoperative racial disparities following spine surgery are less pronounced in the outpatient setting. Spine J 2024:S1529-9430(24)00032-9. [PMID: 38301902 DOI: 10.1016/j.spinee.2024.01.019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/15/2023] [Revised: 01/16/2024] [Accepted: 01/22/2024] [Indexed: 02/03/2024]
Abstract
BACKGROUND CONTEXT Racial disparities in spine surgery have been thoroughly documented in the inpatient (IP) setting. However, despite an increasing proportion of procedures being performed as same-day surgeries, whether similar differences have developed in the outpatient (OP) setting remains to be elucidated. PURPOSE This study aimed to investigate racial differences in postoperative outcomes between Black and White patients following OP and IP lumbar and cervical spine surgery. STUDY DESIGN/SETTING Retrospective cohort study. PATIENT SAMPLE Patients who underwent IP or OP microdiscectomy, laminectomy, anterior cervical discectomy and fusion (ACDF), or cervical disc replacement (CDR) between 2017 and 2021. OUTCOME MEASURES Thirty-day rates of serious and minor adverse events, readmission, reoperation, non-home discharge, and mortality. METHODS A retrospective review of patients who underwent IP or OP microdiscectomy, laminectomy, anterior cervical discectomy and fusion (ACDF), or cervical disc replacement (CDR) between 2017 and 2021 was conducted using the National Surgical Quality Improvement Program (NSQIP) database. Disparities between Black and White patients in (1) adverse event rates, (2) readmission rates, (3) reoperation rates, (4) non-home discharge rates, (5) mortality rates, (6) operative times, and (7) hospital LOS between Black and White patients were measured and compared between IP and OP surgical settings. Multivariable logistic regression analyses were used to adjust for potential effects of baseline demographic and clinical differences. RESULTS Of 81,696 total surgeries, 49,351 (60.4%) were performed as IP and 32,345 (39.6%) were performed as OP procedures. White patients accounted for a greater proportion of IP (88.2% vs. 11.8%) and OP (92.7% vs. 7.3%) procedures than Black patients. Following IP surgery, Black patients experienced greater odds of serious (OR 1.214, 95% CI 1.077-1.370, p=.002) and minor adverse events (OR 1.377, 95% CI 1.113-1.705, p=.003), readmission (OR 1.284, 95% CI 1.130-1.459, p<.001), reoperation (OR 1.194, 95% CI 1.013-1.407, p=.035), and non-home discharge (OR 2.304, 95% CI 2.101-2.528, p<.001) after baseline adjustment. Disparities were less prominent in the OP setting, as Black patients exhibited greater odds of readmission (OR 1.341, 95% CI 1.036-1.735, p=0.026) but were no more likely than White patients to experience adverse events, reoperation, individual complications, non-home discharge, or death (p>.050 for all). CONCLUSIONS Racial inequality in postoperative complications following spine surgery is evident, however disparities in complication rates are relatively less following OP compared to IP procedures. Further work may be beneficial in elucidating the causes of these differences to better understand and mitigate overall racial disparities within the inpatient setting. These decreased differences may also provide promising indication that progress towards reducing inequality is possible as spine care transitions to the OP setting.
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Affiliation(s)
- Troy B Amen
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, USA.
| | - Izzet Akosman
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, USA
| | - Tejas Subramanian
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, USA
| | - Mitchell A Johnson
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, USA
| | - Samuel S Rudisill
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, USA
| | - Junho Song
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, USA
| | - Omri Maayan
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, USA
| | - Lauren A Barber
- Visiting Fellow at St. George and Sutherland Clinical School, University of New South Wales Medicine, Sydney, NSW 2052, Australia
| | | | - Sheeraz Qureshi
- Hospital for Special Surgery, 535 East 70th Street, New York, NY 10021, USA
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Delaney LJ, Isguven S, Hilliard R, Lacerda Q, Oeffinger BE, Machado P, Schaer TP, Hickok NJ, Kurtz SM, Forsberg F. In Vitro and In Vivo Evaluation of Ultrasound-Triggered Release From Novel Spinal Device. J Ultrasound Med 2023; 42:2357-2368. [PMID: 37249416 PMCID: PMC10524871 DOI: 10.1002/jum.16263] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/05/2022] [Revised: 03/17/2023] [Accepted: 05/05/2023] [Indexed: 05/31/2023]
Abstract
OBJECTIVES Bacterial infection following spinal fusion is a major clinical concern with up to 20% incidence. An ultrasound-triggered bulk-release system to combat postsurgical bacterial survival was designed and evaluated. METHODS Polylactic acid (PLA) clips were loaded with vancomycin (VAN) and microbubbles (Sonazoid, GE HealthCare) in vitro. Stability was determined over 14 days. VAN-loaded clips were submerged in water and insonated using a Logiq E10 scanner (GE HealthCare) with a curvilinear C6 probe. Doppler-induced VAN release was quantified using spectrophotometry. For in vivo testing, clips were loaded with methylene blue (MeB) solution and Sonazoid. These clips were implanted into a rabbit along the spine at L2 and L5, as well as a pig at L1 and L3, then insonated in Doppler mode using the C6 probe. RESULTS Sonazoid microbubbles were better preserved when incubated in VAN compared with distilled water at 4°C, 25°C, and 37°C incubation temperatures (P = .0131). Contrast enhancement was observed from both solutions when incubated at 4°C storage conditions. Insonated clips achieved average cumulative VAN release of 101.8 ± 2.8% (81.4 ± 2.8 mg) after 72 hours. Uninsonated clips had only 0.3 ± 0.1% (0.3 ± 0.1 mg) average cumulative VAN release (P < .0001). Clips retrieved from the rabbit did not rupture with insonation nor produce MeB staining of surrounding tissues. In the pig, the PLA film was visibly ruptured and MeB tissue was observed following insonation, whereas the uninsonated clip was intact. CONCLUSION These results demonstrate ultrasound-triggered release of an encapsulated prophylactic solution and provide an important proof-of-concept for continuing large animal evaluations for translational merit.
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Affiliation(s)
- Lauren J. Delaney
- Department of Radiology, Thomas Jefferson University, Philadelphia, PA, 19107
| | - Selin Isguven
- Department of Radiology, Thomas Jefferson University, Philadelphia, PA, 19107
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, PA, 19107
| | - Rachel Hilliard
- Department of Clinical Studies, New Bolton Center, University of Pennsylvania School of Veterinary Medicine, Kennett Square, PA, 19348
| | - Quezia Lacerda
- Department of Radiology, Thomas Jefferson University, Philadelphia, PA, 19107
- School of Biomedical Engineering, Science & Health Systems, Drexel University, Philadelphia, PA, 19104
| | - Brian E. Oeffinger
- School of Biomedical Engineering, Science & Health Systems, Drexel University, Philadelphia, PA, 19104
| | - Priscilla Machado
- Department of Radiology, Thomas Jefferson University, Philadelphia, PA, 19107
| | - Thomas P. Schaer
- Department of Clinical Studies, New Bolton Center, University of Pennsylvania School of Veterinary Medicine, Kennett Square, PA, 19348
| | - Noreen J. Hickok
- Department of Orthopaedic Surgery, Thomas Jefferson University, Philadelphia, PA, 19107
| | - Steven M. Kurtz
- School of Biomedical Engineering, Science & Health Systems, Drexel University, Philadelphia, PA, 19104
- Exponent, Inc., Philadelphia, PA, 19104
| | - Flemming Forsberg
- Department of Radiology, Thomas Jefferson University, Philadelphia, PA, 19107
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Wellington IJ, Karsmarski OP, Murphy KV, Shuman ME, Ng MK, Antonacci CL. The use of machine learning for predicting candidates for outpatient spine surgery: a review. J Spine Surg 2023; 9:323-330. [PMID: 37841781 PMCID: PMC10570640 DOI: 10.21037/jss-22-121] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 12/30/2022] [Accepted: 06/14/2023] [Indexed: 10/17/2023]
Abstract
While spine surgery has historically been performed in the inpatient setting, in recent years there has been growing interest in performing certain cervical and lumbar spine procedures on an outpatient basis. While conducting these procedures in the outpatient setting may be preferable for both the surgeon and the patient, appropriate patient selection is crucial. The employment of machine learning techniques for data analysis and outcome prediction has grown in recent years within spine surgery literature. Machine learning is a form of statistics often applied to large datasets that creates predictive models, with minimal to no human intervention, that can be applied to previously unseen data. Machine learning techniques may outperform traditional logistic regression with regards to predictive accuracy when analyzing complex datasets. Researchers have applied machine learning to develop algorithms to aid in patient selection for spinal surgery and to predict postoperative outcomes. Furthermore, there has been increasing interest in using machine learning to assist in the selection of patients who may be appropriate candidates for outpatient cervical and lumbar spine surgery. The goal of this review is to discuss the current literature utilizing machine learning to predict appropriate patients for cervical and lumbar spine surgery, candidates for outpatient spine surgery, and outcomes following these procedures.
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Affiliation(s)
- Ian J. Wellington
- Department of Orthopaedic Surgery, University of Connecticut, Farmington, CT, USA
| | - Owen P. Karsmarski
- Department of Orthopaedic Surgery, University of Connecticut, Farmington, CT, USA
| | - Kyle V. Murphy
- Department of Orthopaedic Surgery, University of Connecticut, Farmington, CT, USA
| | - Matthew E. Shuman
- Department of Orthopaedic Surgery, University of Connecticut, Farmington, CT, USA
| | - Mitchell K. Ng
- Department of Orthopaedic Surgery, Maimonides Medical Center, Brooklyn, NY, USA
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Sykes DAW, Tabarestani TQ, Chaudhry NS, Salven DS, Shaffrey CI, Bullock WM, Guinn NR, Gadsden J, Berger M, Abd-El-Barr MM. Awake Spinal Fusion Is Associated with Reduced Length of Stay, Opioid Use, and Time to Ambulation Compared to General Anesthesia: A Matched Cohort Study. World Neurosurg 2023; 176:e91-e100. [PMID: 37164209 PMCID: PMC10659088 DOI: 10.1016/j.wneu.2023.05.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2023] [Revised: 04/30/2023] [Accepted: 05/01/2023] [Indexed: 05/12/2023]
Abstract
OBJECTIVE There is increasing interest in performing awake spinal fusion under spinal anesthesia (SA). Evidence supporting SA has been positive, albeit limited. The authors set out to investigate the effects of SA versus general anesthesia (GA) for spinal fusion procedures on length of stay (LOS), opioid use, time to ambulation (TTA), and procedure duration. METHODS The authors performed a retrospective review of a single surgeon's patients who underwent lumbar fusions under SA versus GA from June of 2020 to June of 2022. SA patients were compared to demographically matched GA counterparts undergoing comparable procedures. Analyzed outcomes include operative time, opioid usage in morphine milligram equivalents, TTA, and LOS. RESULTS Ten SA patients were matched to 10 GA counterparts. The cohort had a mean age of 66.77, a mean body mass index of 27.73 kg/m2, and a median American Society of Anesthesiologists Physical Status Score of 3.00. LOS was lower in SA versus GA patients (12.87 vs. 50.79 hours, P = 0.001). Opioid utilization was reduced in SA versus GA patients (10.76 vs. 31.43 morphine milligram equivalents, P = 0.006). TTA was reduced in SA versus GA patients (7.22 vs. 29.87 hours, P = 0.022). Procedure duration was not significantly reduced in SA patients compared to GA patients (139.3 vs. 188.2 minutes, P = 0.089). CONCLUSIONS These preliminary retrospective results suggest the use of SA rather than GA for lumbar fusions is associated with reduced hospital LOS, reduced opioid utilization, and reduced TTA. Future randomized prospective studies are warranted to determine if SA usage truly leads to these beneficial outcomes.
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Affiliation(s)
- David A W Sykes
- Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina, USA.
| | - Troy Q Tabarestani
- Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina, USA
| | - Nauman S Chaudhry
- Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina, USA
| | - David S Salven
- Department of Neurosurgery, Duke University Medical Center, Durham, North Carolina, USA
| | | | - W Michael Bullock
- Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina, USA
| | - Nicole R Guinn
- Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina, USA
| | - Jeffrey Gadsden
- Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina, USA
| | - Miles Berger
- Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina, USA
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Lambrechts MJ, Siegel N, Issa TZ, Lee Y, Karamian B, Ciesielka KA, Wang J, Carter M, Lieb Z, Zaworski C, Dambly J, Canseco JA, Woods B, Hilibrand A, Kepler C, Vaccaro AR, Schroeder GD. Creation of a Risk Calculator for Predicting New-Onset Cardiac Arrhythmias in Patients Undergoing Lumbar Fusion. J Am Acad Orthop Surg 2023; 31:511-519. [PMID: 37037030 DOI: 10.5435/jaaos-d-22-00884] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/22/2022] [Accepted: 01/29/2023] [Indexed: 04/12/2023] Open
Abstract
INTRODUCTION As an increasing number of lumbar fusion procedures are being conducted at specialty hospitals and surgery centers, appropriate patient selection and risk stratification is critical to minimizing patient transfers. Postoperative cardiac arrhythmia has been linked to worse patient outcomes and is a common cause of patient transfer. Therefore, we created a risk calculator to predict a patient's likelihood of developing a new-onset postoperative cardiac arrhythmia after lumbar spinal fusion, which may improve preoperative facility selection. METHODS A retrospective review was conducted of patients who undergoing lumbar fusion from 2017 to 2021 at a single academic center. Patients were excluded if they had any medical history of a cardiac arrhythmia. Multivariable regression was conducted to determine independent predictors of inpatient arrhythmias. The final regression was applied to a bootstrap to validate an arrhythmia prediction model. A risk calculator was created to determine a patient's risk of new-onset cardiac arrhythmia. RESULTS A total of 1,622 patients were included, with 45 patients developing a new-onset postoperative arrhythmia. Age (OR = 1.05; 95% CI, 1.02 to 1.09; P = 0.003), history of beta-blocker use (OR = 2.01; 95% CI, 1.08 to 3.72; P = 0.027), and levels fused (OR = 1.59; 95% CI, 1.20 to 2.00; P = 0.001) were all independent predictors of having a new-onset inpatient arrhythmia. This multivariable regression produced an area under the curve of 0.742. The final regression was applied to a bootstrap prediction modeling technique to create a risk calculator including the male sex, age, body mass index, beta-blocker use, and levels fused (OR = 1.04, [CI = 1.03 to 1.06]) that produced an area under the curve of 0.733. CONCLUSION A patient's likelihood of developing postoperative cardiac arrhythmias may be predicted by comorbid conditions and demographic factors including age, sex, body mass index, and beta-blocker use. Knowledge of these risk factors may improve appropriate selection of an outpatient surgical center or orthopaedic specialty hospital versus an inpatient hospital for lumbar fusions.
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Affiliation(s)
- Mark J Lambrechts
- From the Rothman Orthopaedic Institute, Thomas Jefferson University, Philadelphia, PA (Lambrechts, Siegel, Issa, Lee, Karamian, Ciesielka, Wang, Lieb, Zaworski, Dambly, Canseco, Woods, Hilibrand, Kepler, Vaccaro, and Schroeder), and the Department of Orthopaedic Surgery, Johns Hopkins University, Baltimore, MD (Siegel and Carter)
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Thejeel B, Geannette CS, Roytman M, Pisapia DJ, Chazen JL, Jawetz ST. Patterns of Intrathecal Ossification in Arachnoiditis Ossificans: A Retrospective Case Series. AJNR Am J Neuroradiol 2023; 44:228-234. [PMID: 36635055 PMCID: PMC9891321 DOI: 10.3174/ajnr.a7764] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2022] [Accepted: 12/19/2022] [Indexed: 01/13/2023]
Abstract
Arachnoiditis ossificans is an uncommon end-stage appearance of chronic adhesive arachnoiditis. Imaging features of arachnoiditis ossificans are characteristic and should be diagnosed to avoid unnecessary intervention and guide prognosis and management. In this case series, we retrospectively analyzed CT and MR imaging of 41 patients to identify common patterns of intrathecal ossification and present the common etiologies. Thirty-two patients had a confirmed history of spinal instrumentation, 7 were discovered on imaging without prior surgical history, 1 had a history of ankylosing spondylitis, and 1 had trauma. The most frequent site of ossification was at the conus and cauda equina. Four patterns of ossification were identified, including central, nerve root encasing, weblike, and peripheral. Arachnoiditis ossificans is an important, likely under-recognized consideration in patients who present with back pain. Diagnosis can be made readily on CT; MR imaging diagnosis is also possible but may be challenging.
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Affiliation(s)
- B Thejeel
- From the Department of Radiology and Diagnostic Imaging (B.T.), University of Alberta, Edmonton, Alberta, Canada
| | - C S Geannette
- Department of Radiology and Imaging (C.S.G., J.L.C., S.T.J.), Hospital for Special Surgery, New York, New York
| | - M Roytman
- Department of Radiology (M.R), New York-Presbyterian Hospital, Weill Cornell Medicine, New York, New York
| | - D J Pisapia
- Department of Pathology and Laboratory Medicine (D.J.P.), Weill Cornell Medicine, New York, New York
| | - J L Chazen
- Department of Radiology and Imaging (C.S.G., J.L.C., S.T.J.), Hospital for Special Surgery, New York, New York
| | - S T Jawetz
- Department of Radiology and Imaging (C.S.G., J.L.C., S.T.J.), Hospital for Special Surgery, New York, New York
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Perfetti DC, Kisinde S, Rogers-LaVanne MP, Satin AM, Lieberman IH. Robotic Spine Surgery: Past, Present, and Future. Spine (Phila Pa 1976) 2022; 47:909-21. [PMID: 35472043 DOI: 10.1097/BRS.0000000000004357] [Citation(s) in RCA: 12] [Impact Index Per Article: 6.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/11/2022] [Accepted: 03/14/2022] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Systematic review. OBJECTIVE The aim of this review is to present an overview of robotic spine surgery (RSS) including its history, applications, limitations, and future directions. SUMMARY OF BACKGROUND DATA The first RSS platform received United States Food and Drug Administration approval in 2004. Since then, robotic-assisted placement of thoracolumbar pedicle screws has been extensively studied. More recently, expanded applications of RSS have been introduced and evaluated. METHODS A systematic search of the Cochrane, OVID-MEDLINE, and PubMed databases was performed for articles relevant to robotic spine surgery. Institutional review board approval was not needed. RESULTS The placement of thoracolumbar pedicle screws using RSS is safe and accurate and results in reduced radiation exposure for the surgeon and surgical team. Barriers to utilization exist including learning curve and large capital costs. Additional applications involving minimally invasive techniques, cervical pedicle screws, and deformity correction have emerged. CONCLUSION Interest in RSS continues to grow as the applications advance in parallel with image guidance systems and minimally invasive techniques. IRB APPROVAL N/A.
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Al Jammal OM, Shahrestani S, Delavar A, Brown NJ, Gendreau JL, Lien BV, Sahyouni R, Diaz-Aguilar LD, Shalakhti OS, Pham MH. Demographic predictors of treatments and surgical complications of lumbar degenerative diseases: An analysis of over 250,000 patients from the National Inpatient Sample. Medicine (Baltimore) 2022; 101:e29065. [PMID: 35356929 PMCID: PMC10513212 DOI: 10.1097/md.0000000000029065] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 11/30/2021] [Accepted: 02/24/2022] [Indexed: 01/04/2023] Open
Abstract
ABSTRACT This was a national database study.To examine the role of comorbidities and demographics on inpatient complications in patients with lumbar degenerative conditions.Degenerative conditions of the lumbar spine account for the most common indication for spine surgery in the elderly population in the United States. Significant studies investigating demographic as predictors of surgical rates and health outcomes for degenerative lumbar conditions are lacking.Data were obtained from the National Inpatient Sample from 2010 to 2014 and International Classification of Diseases, 9th revision, Clinical Modification codes were used to identify patients with a primary diagnosis of degenerative lumbar condition. Patients were stratified based on demographic variables and comorbidity status. Multivariate regression analyses were used to determine whether any individual demographic variables, such as race, sex, insurance, and hospital status predicted postoperative complications.A total of 256,859 patients were identified for analysis. The rate of overall complications was found to be 16.1% with a mortality rate of 0.10%. Female, Black, Hispanic, and Asian/Pacific Islander patients had lower odds of receiving surgical treatment compared to White patients (P<.001). Medicare and Medicaid patients were less likely to be surgically managed than patients with private insurance (OR = 0.75, 0.37; P<.001, respectively). Urban hospitals were more likely to provide surgery when compared to rural hospitals (P < .001). Patients undergoing fusion had more complications than decompression alone (P < .001). Females, Medicare insurance status, Medicaid insurance status, urban hospital locations, and certain geographical locations were found to predict postoperative complications (P < .001).There were substantial differences in surgical management and postoperative complications among individuals of different sex, races, and insurance status. Further investigation evaluating the effect of demographics in spine surgery is warranted to fully understand their influence on patient complications.
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Affiliation(s)
- Omar M Al Jammal
- Department of Neurosurgery, University of California San Diego School of Medicine, San Diego, CA,Keck School of Medicine of the University of Southern California, Los Angeles, CA,Department of Medical Engineering, California Institute of Technology, Pasadena, CA,University of California Irvine School of Medicine, Irvine, CA,Department of Biomedical Engineering, Johns Hopkins Whiting School of Engineering, Baltimore, MD
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