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Wang Z, Zhang D, Zhang Z, Miao J. The postoperative clinical effects of utilizing 3D printed (Ti6Al4V) interbody fusion cages in posterior lumbar fusion: A retrospective cohort study. Medicine (Baltimore) 2024; 103:e38431. [PMID: 38905365 PMCID: PMC11191957 DOI: 10.1097/md.0000000000038431] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 01/02/2024] [Accepted: 05/10/2024] [Indexed: 06/23/2024] Open
Abstract
BACKGROUND The research focused on the postoperative effect of using interbody fusion cage in lumbar posterior lamina decompression and interbody fusion with pedicle screw by comparing the postoperative effect of using 3D printing (Ti6Al4V) and PEEK material interbody fusion cage. METHODS Ninety-one patients with lumbar degenerative diseases from the Department of Spine Surgery of Tianjin Hospital were included in the study cohort. They were divided into 3D group (n = 39) and PEEK group (n = 52) according to the use of interbody fusion cage. The imaging data of the patients were collected and the postoperative data of the 2 groups were compared to evaluate patients' health status and the recovery of lumbar structure and function after operation. RESULTS Combined with the degree of fusion, the clinical effect of 3D printing titanium alloy interbody fusion cage was comprehensively judged. At the last follow-up, the JOA score, ODI index, VAS, prolo function score, and SF-36 scale of the 2 groups showed that the clinical symptoms were better than those before operation (P < .05). The height of intervertebral disc, the area of intervertebral foramen and the physiological curvature of lumbar vertebrae increased in varying degrees after operation (P < .05). At the last follow-up, the vertebral cage fusion rates were as high as 89.13% and 90.91% in the 3D and PEEK groups, with collapse rates of 6.5% and 4.5%, respectively. There were 10 cases of cage displacement in 3D group and 7 cases of cage displacement in PEEK group. There was no significant difference between the 2 groups (P > .05). CONCLUSIONS In conclusion, 3D printed (Ti6Al4V) interbody fusion cage can obtain good clinical effect in the surgical treatment of lumbar degenerative diseases. Posterior lumbar lamina decompression, bilateral pedicle screw fixation combined with 3D printed cage interbody fusion is excellent in rebuilding the stability of lumbar vertebrae. 3D printed interbody fusion cage can be an ideal substitute material for intervertebral bone grafting. The stable fusion time of interbody fusion cage after lumbar fusion is mostly from 3 months to half a year after operation.
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Affiliation(s)
- Zi Wang
- Department of Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Dongzhe Zhang
- Department of Spine Surgery, Cangzhou Hospital of Integrated TCM-WM, Cangzhou, China
| | - Zepei Zhang
- Department of Spine Surgery, Tianjin Hospital, Tianjin, China
| | - Jun Miao
- Department of Spine Surgery, Tianjin Hospital, Tianjin, China
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Yang H, Liu J, Hai Y, Han B. What Are the Benefits of Lateral Lumbar Interbody Fusion on the Treatment of Adult Spinal Deformity: A Systematic Review and Meta-Analysis Deformity. Global Spine J 2023; 13:172-187. [PMID: 35442824 PMCID: PMC9837508 DOI: 10.1177/21925682221089876] [Citation(s) in RCA: 8] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 01/17/2023] Open
Abstract
STUDY DESIGN A systematic review and meta-analysis. OBJECTIVE The purpose of this systematic review and meta-analysis was to compare the efficacy of lateral lumbar interbody fusion (LLIF) combined with posterior spinal fusion (PSF) with that of conventional PSF in the treatment of adult spinal deformity (ASD). METHODS A comprehensive literature search was performed for relevant studies in PubMed, EMBASE, Web of Science, and the Cochrane Library. Spinopelvic parameters, surgical data, complications, and clinical outcomes at the last follow-up were compared between patients with ASD who underwent LLIF combined with PSF (LLIF+PSF group) and those who underwent conventional PSF (only-PSF group). RESULTS Ten studies, comprising 621 patients with ASD (313 in the LLIF+PSF group and 308 in the only-PSF group), were included. The level of evidence was III for 7 studies and IV for 3 studies. There was no significant difference in the improvement in the visual analog scale score, systemic complication rate, and revision rate between groups. In the LLIF+PSF group, we noted a superior restoration of lumbar lordosis (weighted mean difference [WMD], 9.77; 95% confidence interval [CI] 7.10 to 12.44, P < .001), pelvic tilt (WMD, -2.50; 95% CI -4.25 to -.75, P = .005), sagittal vertical axis (WMD, -21.92; 95% CI -30.73 to -13.11, P < .001), and C7 plumb line-center sacral vertical line (WMD, -4.03; 95% CI -7.52 to -.54, P = .024); a lower estimated blood loss (WMD, -719.99; 95% CI -1105.02 to -334.96, P < .001) while a prolonged operating time (WMD, 104.89; 95% CI 49.36 to 160.43, P < .001); lower incidence of pseudarthrosis (risk ratio [RR], .26; 95% CI .08 to .79, P = .017) while higher incidence of neurologic deficits (RR, 2.04; 95% CI 1.27 to 3.25, P = .003); and a better improvement in Oswestry Disability Index score (WMD, -7.04; 95% CI -10.155 to -3.93, P < .001) and Scoliosis Research Society-22 total score (WMD, .27; 95% CI .11 to .42, P = .001). The level of evidence in this systematic review and meta-analysis was II. CONCLUSION Compared with conventional PSF, LLIF combined with PSF was associated with superior restoration of sagittal and coronal alignment, lower incidence of pseudarthrosis, better improvement in quality of life, and less surgical invasiveness in the treatment of ASD, albeit at the cost of prolonged surgical times and substantially high incidence of lower extremity symptoms. Surgeons should weigh the advantages and disadvantages of this procedure, and inform patients about its side effects.
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Affiliation(s)
- Honghao Yang
- Department of Orthopedic Surgery, Beijing Chao-Yang
Hospital, Beijing, China
| | - Jingwei Liu
- Department of Orthopedic Surgery, Beijing Chao-Yang
Hospital, Beijing, China
| | - Yong Hai
- Department of Orthopedic Surgery, Beijing Chao-Yang
Hospital, Beijing, China,*Yong Hai, Department of Orthopedic
Surgery, Beijing Chao-Yang Hospital, Capital Medical University, Gongti South
Rd, No. 8, Beijing 100020, China.
| | - Bo Han
- Department of Orthopedic Surgery, Beijing Chao-Yang
Hospital, Beijing, China
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Liu G, Tan JH, Tan J, Ng JH, Chua J, Chan YH, Riew KD. Does Cigarette Smoking Affect Cervical Laminoplasty Clinical and Radiologic Outcomes? Clin Spine Surg 2022; 35:E473-E477. [PMID: 34907932 DOI: 10.1097/bsd.0000000000001285] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/13/2021] [Accepted: 11/11/2021] [Indexed: 11/27/2022]
Abstract
STUDY DESIGN Retrospective review. OBJECTIVE This study aimed to investigate if smokers have both poorer early clinical and radiologic outcomes in cervical laminoplasty when compared with nonsmokers. SUMMARY OF BACKGROUND DATA Cigarette smoking had been reported to increase rates of pseudoarthrosis following spinal instrumentation with fusion. METHODOLOGY A retrospective review of all patients who underwent open-door cervical laminoplasty was performed. Nurick, neck pain visual analog scale, and neck disability index scores were reviewed. Cervical lordosis, range of motion (ROM), and intervertebral disc height were measured. The rates and reasons for revision surgery were recorded and classified according to the etiology of laminoplasty revision surgery. RESULTS Sixty patients were recruited, of which 20 patients (18 males, 2 females) were smokers and 40 patients (27 males, 13 females) were nonsmokers. There was no statistically significant difference between smokers and nonsmokers in preoperative and postoperative visual analog scale, neck disability index, and Nurick scores. A trend was noted toward a greater postoperative reduction in cervical lordosis (13±8 vs. 11±11 degrees). Furthermore, 41% of smokers versus 30% in nonsmokers had >10% loss of postoperative ROM, and 59% smokers versus 50% nonsmokers had >5% loss of postoperative ROM.Postoperative complications and intervertebral disc deterioration were similar in both groups. A higher reoperation rate was noted in smokers with 6 smokers (30%) as compared with 4 nonsmokers (10%), although this did not reach statistical significance. Among the smokers, 4 (20%) were because of cervical disease progression while 2 were technique related. In nonsmokers, all 4 (10%) were because of cervical disease progression. CONCLUSION This study showed that while there was a nonstatistically significant trend noted toward higher rates of revision surgery in smokers, the laminoplasty outcomes were not significantly poorer in smokers. In heavy smokers with multilevel cervical myelopathy, laminoplasty may be the treatment of choice over anterior spinal decompression and fusion where a high risk of pseudoarthrosis is anticipated.
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Affiliation(s)
- Gabriel Liu
- Department of Orthopaedic Surgery, University Spine Centre
| | - Jun-Hao Tan
- Department of Orthopaedic Surgery, University Spine Centre
| | - Joshua Tan
- Department of Orthopaedic Surgery, National University Hospital, National University Health System
| | - Jing Han Ng
- Department of Orthopaedic Surgery, National University Hospital, National University Health System
| | - Jasline Chua
- Department of Orthopaedic Surgery, National University Hospital, National University Health System
| | - Yiong Huak Chan
- Medicine Biostatistics Unit, Yong Loo Lin School of Medicine, National University of Singapore, Singapore
| | - K Daniel Riew
- Columbia University Medical Center, Spine Division, Adult and Pediatric Comprehensive Spine Fellowship, Columbia University, New York, NY
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Neuman BJ, Harris AB, Klineberg EO, Hostin RA, Protopsaltis TS, Passias PG, Gum JL, Hart RA, Kelly MP, Daniels AH, Ames CP, Shaffrey CI, Kebaish KM. Defining a Surgical Invasiveness Threshold for Increased Risk of a Major Complication Following Adult Spinal Deformity Surgery. Spine (Phila Pa 1976) 2021; 46:931-938. [PMID: 34160371 DOI: 10.1097/brs.0000000000003949] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
STUDY DESIGN Retrospective review. OBJECTIVES The aim of this study was to define a surgical invasiveness threshold that predicts major complications after adult spinal deformity (ASD) surgery; use this threshold to categorize patients into quartiles by invasiveness; and determine the odds of major complications by quartile. SUMMARY OF BACKGROUND DATA Understanding the relationship between surgical invasiveness and major complications is important for estimating the likelihood of major complications after ASD surgery. METHODS Using a multicenter database, we identified 574 ASD patients (more than 5 levels fused; mean age, 60 ± 15 years) with minimum 2-year follow-up. Invasiveness was calculated as the ASD Surgical and Radiographic (ASD-SR) score. Youden index was used to identify the invasiveness score cut-off associated with optimal sensitivity and specificity for predicting major complications. Resulting high- and low-invasiveness groups were divided in half to create quartiles. Odds of developing a major complication were analyzed for each quartile using logistic regression (alpha = 0.05). RESULTS The ASD-SR cutoff score that maximally predicted major complications was 90 points. ASD-SR quartiles were 0 to 65 (Q1), 66 to 89 (Q2), 90 to 119 (Q3), and ≥120 (Q4). Risk of a major complication was 17% in Q1, 21% in Q2, 35% in Q3, and 33% in Q4 (P < 0.001). Comparisons of adjacent quartiles showed an increase in the odds of a major complication from Q2 to Q3 (odds ratio [OR] 1.8; 95% confidence interval [CI]: 1.0-3.0), but not from Q1 to Q2 or from Q3 to Q4. Patients with ASD-SR scores ≥90 were 1.9 times as likely to have a major complication than patients with scores <90 (OR 1.9, 95% CI 1.3-2.9). Mean ASD-SR scores above and below 90 points were 121 ± 25 and 63 ± 17, respectively. CONCLUSION The odds of major complications after ASD surgery are significantly greater when the procedure has an ASD-SR score ≥90. ASD-SR score can be used to counsel patients regarding these increased odds.Level of Evidence: 3.
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Affiliation(s)
- Brian J Neuman
- Department of Orthopedic Surgery, The Johns Hopkins University, Baltimore, MD
| | - Andrew B Harris
- Department of Orthopedic Surgery, The Johns Hopkins University, Baltimore, MD
| | - Eric O Klineberg
- Department of Orthopedic Surgery, University of California Davis, Sacramento, CA
| | - Richard A Hostin
- Department of Orthopedic Surgery, Baylor Scoliosis Center, Plano, TX
| | | | - Peter G Passias
- Department of Orthopedic Surgery, NYU Hospital for Joint Diseases, New York, NY
| | - Jeffrey L Gum
- Orthopaedic Spine Surgery, Norton Leatherman Spine Center, Louisville, KY
| | - Robert A Hart
- Department of Orthopedic Surgery, Oregon Health & Science University, Portland, OR
| | - Michael P Kelly
- Department of Orthopedic Surgery, Washington University, St. Louis, MO
| | - Alan H Daniels
- Department of Orthopedic Surgery, Brown University-Rhode Island Hospital, Providence, RI
| | | | - Christopher I Shaffrey
- Department of Orthopedic and Neurological Spine Surgery, Duke University Medical Center, Durham, NC
| | - Khaled M Kebaish
- Department of Orthopedic Surgery, The Johns Hopkins University, Baltimore, MD
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Wu N, Shao J, Zhang Z, Wang S, Li Z, Zhao S, Yang Y, Liu L, Yu C, Liu S, Zhao Z, Du Y, Zhang Y, Wang L, Zhao Y, Yu K, Zhao H, Shen J, Qiu G, Wu Z, Zhang TJ. Factors and predictive model associated with perioperative complications after long fusion in the treatment of adult non-degenerative scoliosis. BMC Musculoskelet Disord 2021; 22:483. [PMID: 34034738 PMCID: PMC8152117 DOI: 10.1186/s12891-021-04361-y] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/03/2020] [Accepted: 05/10/2021] [Indexed: 11/20/2022] Open
Abstract
Introduction Adult non-degenerative scoliosis accounts for 90% of spinal deformities in young adults. However, perioperative complications and related risk factors of long posterior instrumentation and fusion for the treatment of adult non-degenerative scoliosis have not been adequately studied. Methods We evaluated clinical and radiographical results from 146 patients with adult non-degenerative scoliosis who underwent long posterior instrumentation and fusion. Preoperative clinical data, intraoperative variables, and perioperative radiographic parameters were collected to analyze the risk factors for perioperative complications. Potential and independent risk factors for perioperative complications were evaluated by univariate analysis and logistic regression analysis. Results One hundred forty-six adult non-degenerative scoliosis patients were included in our study. There were 23 perioperative complications for 21 (14.4%) patients, eight of which were cardiopulmonary complications, two of which were infection, six of which were neurological complications, three of which were gastrointestinal complications, and four of which were incision-related complication. The independent risk factors for development of total perioperative complications included change in Cobb angle (odds ratio [OR] = 1.085, 95% CI = 1.035 ~ 1.137, P = 0.001) and spinal osteotomy (OR = 3.565, 95% CI = 1.039 ~ 12.236, P = 0.043). The independent risk factor for minor perioperative complications is change in Cobb angle (OR = 1.092, 95% CI = 1.023 ~ 1.165, P = 0.008). The independent risk factors for major perioperative complications are spinal osteotomy (OR = 4.475, 95% CI = 1.960 ~ 20.861, P = 0.036) and change in Cobb angle (OR = 1.106, 95% CI = 1.035 ~ 1.182, P = 0.003). Conclusions Our study indicate that change in Cobb angle and spinal osteotomy are independent risk factors for total perioperative complications after long-segment posterior instrumentation and fusion in adult non-degenerative scoliosis patients. Change in Cobb angle is an independent risk factor for minor perioperative complications. Change in Cobb angle and spinal osteotomy are independent risk factors for major perioperative complications.
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Affiliation(s)
- Nan Wu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China. .,Key Laboratory of Big Data for Spinal Deformities, Chinese Academy of Medical Sciences, Beijing, 100730, China. .,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, 100730, China.
| | - Jiashen Shao
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,Graduate School of Peking Union Medical College, Beijing, 100005, China
| | - Zhen Zhang
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,Graduate School of Peking Union Medical College, Beijing, 100005, China
| | - Shengru Wang
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,Key Laboratory of Big Data for Spinal Deformities, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Ziquan Li
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Sen Zhao
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,Key Laboratory of Big Data for Spinal Deformities, Chinese Academy of Medical Sciences, Beijing, 100730, China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, 100730, China
| | - Yang Yang
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,Key Laboratory of Big Data for Spinal Deformities, Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Lian Liu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,Graduate School of Peking Union Medical College, Beijing, 100005, China
| | - Chenxi Yu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,Graduate School of Peking Union Medical College, Beijing, 100005, China
| | - Sen Liu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Zhengye Zhao
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,Graduate School of Peking Union Medical College, Beijing, 100005, China
| | - You Du
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,Graduate School of Peking Union Medical College, Beijing, 100005, China
| | - Yuanqiang Zhang
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,Graduate School of Peking Union Medical College, Beijing, 100005, China.,Department of Orthopedic Surgery, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Lianlei Wang
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,Graduate School of Peking Union Medical College, Beijing, 100005, China.,Department of Orthopedic Surgery, Qilu Hospital of Shandong University, Jinan, 250012, China
| | - Yu Zhao
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Keyi Yu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Hong Zhao
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Jianxiong Shen
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China
| | - Guixing Qiu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,Key Laboratory of Big Data for Spinal Deformities, Chinese Academy of Medical Sciences, Beijing, 100730, China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, 100730, China
| | | | - Zhihong Wu
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China.,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, 100730, China.,Medical Research Center, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, China
| | - Terry Jianguo Zhang
- Department of Orthopedic Surgery, Peking Union Medical College Hospital, Peking Union Medical College and Chinese Academy of Medical Sciences, Beijing, 100730, China. .,Key Laboratory of Big Data for Spinal Deformities, Chinese Academy of Medical Sciences, Beijing, 100730, China. .,Beijing Key Laboratory for Genetic Research of Skeletal Deformity, Beijing, 100730, China.
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Schupper AJ, Shuman WH, Baron RB, Neifert SN, Chapman EK, Gilligan J, Gal JS, Caridi JM. Utilization of the American Society of Anesthesiologists (ASA) classification system in evaluating outcomes and costs following deformity spine procedures. Spine Deform 2021; 9:185-190. [PMID: 32780301 DOI: 10.1007/s43390-020-00176-4] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/11/2020] [Accepted: 07/27/2020] [Indexed: 11/30/2022]
Abstract
PURPOSE Adult spinal deformity (ASD) has increased prevalence in aging populations. Due to the high cost of surgery, studies have evaluated risk factors that predict readmissions and poor outcomes. The American Society of Anesthesiologists (ASA) classification system has been applied to patients with ASD to assess preoperative health and assess the correlation between ASA class and postoperative complications. This study evaluates the relationship between ASA and complications, length of stay (LOS), and direct costs following spine deformity surgery. METHODS Patients undergoing spine deformity surgery at a single institution from 2008-2016 were included and stratified based upon ASA status. Primary outcomes included patient demographics, adjusted LOS, and cost of care. Secondary measures compared between cohorts included adverse events, non-home discharge, and readmission rates. RESULTS 442 patients with ASD were included in this study. Higher ASA class was correlated with greater Elixhauser Comorbidity Index (ECI) scores (p < 0.0001) and older age (p < 0.0001). Univariate analysis showed longer LOS (p < 0.0001) and greater direct costs in patients with higher ASA class (p < 0.0001). Patients in ASA Class III or IV had the greatest incidence of ICU stay when compared to patients without systemic disease (p < 0.0001). Upon multivariable regression analysis, high ASA class was associated with higher rates of non-home discharge (OR 5.0, 95% CI 3.1-8.1). Direct costs were greater for higher ASA class (regression estimate = + $9,666, p = 0.002). CONCLUSION This study demonstrates that ASA class is correlated with a more complicated postoperative hospital course, greater rates of non-home discharge, total direct costs in spine deformity patients.
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Affiliation(s)
- Alexander J Schupper
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, Mount Sinai Health System, Annenberg 8th Floor, 1 Gustave Levy Place, New York, NY, 10029, USA.
| | - William H Shuman
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, Mount Sinai Health System, Annenberg 8th Floor, 1 Gustave Levy Place, New York, NY, 10029, USA
| | - Rebecca B Baron
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, Mount Sinai Health System, Annenberg 8th Floor, 1 Gustave Levy Place, New York, NY, 10029, USA
| | - Sean N Neifert
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, Mount Sinai Health System, Annenberg 8th Floor, 1 Gustave Levy Place, New York, NY, 10029, USA
| | - Emily K Chapman
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, Mount Sinai Health System, Annenberg 8th Floor, 1 Gustave Levy Place, New York, NY, 10029, USA
| | - Jeffrey Gilligan
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, Mount Sinai Health System, Annenberg 8th Floor, 1 Gustave Levy Place, New York, NY, 10029, USA
| | - Jonathan S Gal
- Department of Anesthesiology, Perioperative, and Pain Medicine, Icahn School of Medicine at Mount Sinai, Mount Sinai Health System, New York, NY, 10029, USA
| | - John M Caridi
- Department of Neurosurgery, Icahn School of Medicine at Mount Sinai, Mount Sinai Health System, Annenberg 8th Floor, 1 Gustave Levy Place, New York, NY, 10029, USA
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7
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Li Y, Ou Y, Zhu Y, He B, Xu S, Yu H. Effectiveness of Short-Segment Fixation versus Long-Segment Fixation for Degenerative Scoliosis with Cobb Angle 20°~40°: A Retrospective Observational Study. Med Sci Monit 2020; 26:e923656. [PMID: 32694499 PMCID: PMC7392055 DOI: 10.12659/msm.923656] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/29/2022] Open
Abstract
BACKGROUND There remains a great deal of controversy regarding the selection of long-segment fixation and short-segment fixation, especially for degenerative scoliosis (DS) patients with Cobb angle 20°~40°. The purpose of this study was to investigate the effects of different fixation levels in DS patients with Cobb angle 20°~40°. MATERIAL AND METHODS We enrolled 96 DS patients, divided into a long-segment fixation group (>3 segments) and a short-segment fixation group (≤3 segments). The visual analogue scale (VAS) and Oswestry disability index (ODI) were used to evaluate the clinical outcomes. The spinal-pelvic parameters and complications were also collected and analyzed. RESULTS The short-segment fixation group had the advantages of less blood loss, shorter operation time and shorter fluoroscopy time (P<0.05). The 2 groups achieved similar effects in leg pain (VAS) and ODI after operation (P>0.05); however, there was a better relief of low back pain in the long-segment fixation group (P<0.05). The changes of Cobb angle, sagittal vertical axis (SVA), lumbar lordosis (LL), pelvic tilt (PT) and sacral slope (SS) in the long-segment fixation group were more obvious than that in the short-segment fixation group at the final follow-up (P<0.05). The prevalence of complications in the long-segment fixation group was significantly higher than in the short-segment fixation group (P<0.01). CONCLUSIONS Short-segment fixation has less surgical trauma and fewer complications, whereas long-segment fixation has more advantages in improving spine-pelvis parameters and relieving low back pain.
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Affiliation(s)
- Yuanqiang Li
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Yunsheng Ou
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Yong Zhu
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Bin He
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Shuai Xu
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
| | - Haoyang Yu
- Department of Orthopaedics, The First Affiliated Hospital of Chongqing Medical University, Chongqing, China (mainland)
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8
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Li Y, Ou Y, Zhu Y, Zhao Z, Luo W, Xu S, Yu H. [Effectiveness of short fusion versus long fusion for degenerative scoliosis with a Cobb angle of 20-40° combined with spinal stenosis]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2020; 34:285-293. [PMID: 32174071 DOI: 10.7507/1002-1892.201905105] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Subscribe] [Scholar Register] [Indexed: 11/03/2022]
Abstract
Objective To compare the effectiveness of decompression and short fusion or long fusion for degenerative scoliosis (DS) with a Cobb angle of 20-40° combined with spinal stenosis. Methods The clinical data of 50 patients with DS who were treated with decompression combined with short fusion or long fusion between January 2015 and May 2017 were retrospectively analysed. Patients were divided into long fusion group (fixed segments>3, 23 cases) and short fusion group (fixed segments≤3, 27 cases). There was no significant difference in gender, age, disease duration, and preoperative visual analogue scale (VAS) score of leg pain, Oswestry disability index (ODI), thoracic kyphosis (TK), thoracolumbar kyphosis (TLK), pelvic incidence (PI), pelvic title (PT), and sacral slope (SS) between the two groups ( P>0.05); however, the VAS score of low back pain, Cobb angle, and sagittal vertical axis (SVA) in long fusion group were significantly higher than those in short fusion group ( P<0.05), and the lumbar lordosis (LL) was significantly lower than that in short fusion group ( t=2.427, P=0.019). The operation time, intraoperative blood loss, fluoroscopy times, hospital stay, and complications were recorded and compared. The VAS scores of low back pain and leg pain and ODI score were used to evaluate the clinical outcomes before operation and at last follow-up. X-ray films of the whole spine in standard standing position were taken before operation, at 6 months after operation, and at last follow-up, and the spino-pelvic parameters were measured. Results The operation time, intraoperative blood loss, and fluoroscopy times in the short fusion group were significantly less than those in the long fusion group ( P<0.05); there was no significant difference in hospital stay between the two groups ( t=0.933, P=0.355). The patients were followed up 12-46 months with an average of 22.3 months. At last follow-up, the VAS scores of low back pain and leg pain and ODI score significantly improved when compared with those before operation ( P<0.05). Except for the improvement of VAS score of low back pain ( t=8.332, P=0.000), the differences of the improvements of the other scores between the two groups were not significant ( P>0.05). The Cobb angle, SVA, TLK, and PT significantly decreased, while SS and LL significantly increased in the long fusion group ( P<0.05), while the Cobb angle and PT significantly decreased and SS significantly increased in the short fusion group at last follow-up ( P<0.05). There was no significant difference in spino-pelvic parameters between the two groups at 6 months after operation and at last follow-up ( P>0.05). The improvements of Cobb angle, SVA, LL, PT, and SS in the long fusion group were significantly higher than those in the short fusion group at last follow-up ( P<0.05). There was no perioperative death in both groups. The incidence of complications in the long fusion group was 34.8% (8/23), which was significantly higher than that in the short fusion group [11.1% (3/27)] ( χ 2=4.056, P=0.034). Conclusion The DS patients with the Cobb angle of 20-40°can achieve satisfactory clinical outcomes and improve the spino-pelvic parameters by choosing appropriate fixation levels. Short fusion has less surgical trauma and fewer complications, whereas long fusion has more advantages in enhancing spino-pelvic parameters and relieving low back pain.
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Affiliation(s)
- Yuanqiang Li
- Department of Orthopedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R.China
| | - Yunsheng Ou
- Department of Orthopedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R.China
| | - Yong Zhu
- Department of Orthopedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R.China
| | - Zenghui Zhao
- Department of Orthopedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R.China
| | - Wei Luo
- Department of Orthopedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R.China
| | - Shuai Xu
- Department of Orthopedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R.China
| | - Haoyang Yu
- Department of Orthopedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R.China
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Sakai Y, Kaito T, Takenaka S, Yamashita T, Makino T, Hosogane N, Nojiri K, Suzuki S, Okada E, Watanabe K, Funao H, Isogai N, Ueda S, Hikata T, Shiono Y, Watanabe K, Katsumi K, Fujiwara H, Nagamoto Y, Terai H, Tamai K, Matsuoka Y, Suzuki H, Nishimura H, Tagami A, Yamada S, Adachi S, Ohtori S, Orita S, Furuya T, Yoshii T, Ushio S, Inoue G, Miyagi M, Saito W, Imagama S, Ando K, Sakai D, Nukaga T, Kiyasu K, Kimura A, Inoue H, Nakano A, Harimaya K, Doi T, Kawaguchi K, Yokoyama N, Oishi H, Ikegami S, Futatsugi T, Shimizu M, Kakutani K, Yurube T, Oshima M, Uei H, Aoki Y, Takahata M, Iwata A, Seki S, Murakami H, Yoshioka K, Endo H, Hongo M, Nakanishi K, Abe T, Tsukanishi T, Ishii K. Complications after spinal fixation surgery for osteoporotic vertebral collapse with neurological deficits: Japan Association of Spine Surgeons with ambition multicenter study. J Orthop Sci 2019; 24:985-990. [PMID: 31521452 DOI: 10.1016/j.jos.2019.08.015] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 03/28/2019] [Revised: 08/20/2019] [Accepted: 08/22/2019] [Indexed: 11/17/2022]
Abstract
BACKGROUND There have been few reports on the incidence and risk factors of the complications after spinal fixation surgery for osteoporotic vertebral collapse (OVC) with neurological deficits. This study aimed to identify the incidence and risk factors of the complications after OVC surgery. METHODS In this retrospective multicenter study, a total of 403 patients (314 women and 89 men; mean age 73.8 years) who underwent spinal fixation surgery for OVC with neurological deficits between 2005 and 2014 were enrolled. Data on patient demographics were collected, including age, sex, body mass index, smoking, steroid use, medical comorbidities, and surgical procedures. All postoperative complications that occurred within 6 weeks were recorded. Patients were classified into two groups, namely, complication group and no complication group, and risk factors for postoperative complications were investigated by univariate and multivariate analyses. RESULTS Postoperative complications occurred in 57 patients (14.1%), and the most common complication was delirium (5.7%). In the univariate analysis, the complication group was found to be older (p = 0.039) and predominantly male (p = 0.049), with higher occurrence rate of liver disease (p = 0.001) and Parkinson's disease (p = 0.039) compared with the no-complication group. In the multivariate analysis, the significant independent risk factors were age (p = 0.021; odds ratio [OR] 1.051, 95% confidence interval [CI] 1.007-1.097), liver disease (p < 0.001; OR 8.993, 95% CI 2.882-28.065), and Parkinson's disease (p = 0.009; OR 3.636, 95% CI 1.378-9.599). CONCLUSIONS Complications after spinal fixation surgery for OVC with neurological deficits occurred in 14.1%. Age, liver disease, and Parkinson's disease were demonstrated to be independent risk factors for postoperative complications.
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Affiliation(s)
- Yusuke Sakai
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Takashi Kaito
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Suita, Japan.
| | - Shota Takenaka
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Tomoya Yamashita
- Department of Orthopaedic Surgery, National Hospital Organization Osaka National Hospital, Osaka, Japan
| | - Takahiro Makino
- Department of Orthopaedic Surgery, Osaka University Graduate School of Medicine, Suita, Japan
| | - Naobumi Hosogane
- Department of Orthopedic Surgery, Kyorin University, Mitaka, Japan
| | - Kenya Nojiri
- Department of Orthopedic Surgery, Isehara Kyodo Hospital, Isehara, Japan
| | - Satoshi Suzuki
- Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Eijiro Okada
- Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Kota Watanabe
- Department of Orthopaedic Surgery, Keio University School of Medicine, Tokyo, Japan
| | - Haruki Funao
- Spine and Spinal Cord Center, International University of Health and Welfare, Mita Hospital, Tokyo, Japan
| | - Norihiro Isogai
- Spine and Spinal Cord Center, International University of Health and Welfare, Mita Hospital, Tokyo, Japan
| | - Seiji Ueda
- Department of Orthopaedic Surgery, Kawasaki Municipal Hospital, Kawasaki, Japan
| | - Tomohiro Hikata
- Department of Orthopaedic Surgery, Spine Center, Kitasato Institute Hospital, Tokyo, Japan
| | - Yuta Shiono
- Department of Orthopaedic Surgery, Saiseikai Central Hospital, Tokyo, Japan
| | - Kei Watanabe
- Department of Orthopaedic Surgery, Niigata University Medical and Dental General Hospital, Niigata, Japan
| | - Keiichi Katsumi
- Department of Orthopaedic Surgery, Niigata University Medical and Dental General Hospital, Niigata, Japan
| | - Hiroyasu Fujiwara
- Department of Orthopaedic Surgery, National Hospital Organization Osaka Minami Medical Center, Osaka, Japan
| | - Yukitaka Nagamoto
- Department of Orthopaedic Surgery, Osaka Rosai Hospital, Osaka, Japan
| | - Hidetomi Terai
- Department of Orthopedic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Koji Tamai
- Department of Orthopedic Surgery, Osaka City University Graduate School of Medicine, Osaka, Japan
| | - Yuji Matsuoka
- Department of Orthopedic Surgery, Tokyo Medical University, Tokyo, Japan
| | - Hidekazu Suzuki
- Department of Orthopedic Surgery, Tokyo Medical University, Tokyo, Japan
| | - Hirosuke Nishimura
- Department of Orthopedic Surgery, Tokyo Medical University, Tokyo, Japan
| | - Atsushi Tagami
- Department of Orthopedic Surgery, Nagasaki University Hospital, Nagasaki, Japan
| | - Shuta Yamada
- Department of Orthopedic Surgery, Nagasaki University Hospital, Nagasaki, Japan
| | - Shinji Adachi
- Department of Orthopedic Surgery, Nagasaki University Hospital, Nagasaki, Japan
| | - Seiji Ohtori
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Sumihisa Orita
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Takeo Furuya
- Department of Orthopaedic Surgery, Graduate School of Medicine, Chiba University, Chiba, Japan
| | - Toshitaka Yoshii
- Department of Orthopaedic Surgery, Tokyo Medical and Dental University, Tokyo, Japan
| | - Shuta Ushio
- Department of Orthopaedic Surgery, Tokyo Medical and Dental University, Tokyo, Japan
| | - Gen Inoue
- Department of Orthopaedic Surgery, Kitasato University, School of Medicine, Sagamihara, Japan
| | - Masayuki Miyagi
- Department of Orthopaedic Surgery, Kitasato University, School of Medicine, Sagamihara, Japan
| | - Wataru Saito
- Department of Orthopaedic Surgery, Kitasato University, School of Medicine, Sagamihara, Japan
| | - Shiro Imagama
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Kei Ando
- Department of Orthopedic Surgery, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Daisuke Sakai
- Department of Orthopaedic Surgery, Tokai University School of Medicine, Isehara, Japan
| | - Tadashi Nukaga
- Department of Orthopaedic Surgery, Tokai University School of Medicine, Isehara, Japan
| | - Katsuhito Kiyasu
- Department of Orthopaedic Surgery, Kochi Medical School, Kochi University, Nankoku, Japan
| | - Atsushi Kimura
- Department of Orthopedic Surgery, Jichi Medical University, Shimotsuke, Japan
| | - Hirokazu Inoue
- Department of Orthopedic Surgery, Jichi Medical University, Shimotsuke, Japan
| | - Atsushi Nakano
- Department of Orthopedic Surgery, Osaka Medical College, Takatsuki, Japan
| | - Katsumi Harimaya
- Department of Orthopaedic Surgery, Kyushu University Beppu Hospital, Beppu, Japan
| | - Toshio Doi
- Department of Orthopaedic Surgery, Kyushu University Beppu Hospital, Beppu, Japan
| | | | | | - Hidekazu Oishi
- Department of Orthopedic Surgery, Kyushu University, Fukuoka, Japan
| | - Shota Ikegami
- Department of Orthopedic Surgery, Shinshu University, Matsumoto, Japan
| | | | - Masayuki Shimizu
- Department of Orthopedic Surgery, Matsumoto City Hospital, Matsumoto, Japan
| | - Kenichiro Kakutani
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Takashi Yurube
- Department of Orthopedic Surgery, Kobe University Graduate School of Medicine, Kobe, Japan
| | - Masashi Oshima
- Department of Orthopaedic Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Hiroshi Uei
- Department of Orthopaedic Surgery, Nihon University School of Medicine, Tokyo, Japan
| | - Yasuchika Aoki
- Department of Orthopaedic Surgery, Eastern Chiba Medical Center, Togane, Japan
| | - Masahiko Takahata
- Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Akira Iwata
- Department of Orthopaedic Surgery, Hokkaido University Graduate School of Medicine, Sapporo, Japan
| | - Shoji Seki
- Department of Orthopedic Surgery, University of Toyama, Toyama, Japan
| | - Hideki Murakami
- Department of Orthopaedic Surgery, Graduate School of Medical Sciences, Kanazawa University, Kanazawa, Japan
| | - Katsuhito Yoshioka
- Department of Orthopedic Surgery, National Hospital Organization Kanazawa Medical Center, Kanazawa, Japan
| | - Hirooki Endo
- Department of Orthopedic Surgery, Iwate Medical University, Morioka, Japan
| | - Michio Hongo
- Department of Orthopedic Surgery, Akita University, Akita, Japan
| | | | - Tetsuya Abe
- Department of Orthopedic Surgery, University of Tsukuba, Tsukuba, Japan
| | | | - Ken Ishii
- Spine and Spinal Cord Center, International University of Health and Welfare, Mita Hospital, Tokyo, Japan
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Hu J, Ou Y, Zhu Y, Luo W, Zhao Z, Du X, Li J. [Effectiveness of nano-hydroxyapatite/polyamide-66 Cage in interbody fusion for degenerative lumbar scoliosis]. ZHONGGUO XIU FU CHONG JIAN WAI KE ZA ZHI = ZHONGGUO XIUFU CHONGJIAN WAIKE ZAZHI = CHINESE JOURNAL OF REPARATIVE AND RECONSTRUCTIVE SURGERY 2019; 33:287-295. [PMID: 30874383 PMCID: PMC8337914 DOI: 10.7507/1002-1892.201807060] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Subscribe] [Scholar Register] [Received: 07/04/2018] [Revised: 01/17/2019] [Indexed: 11/03/2022]
Abstract
Objective To explore the effectiveness of nano-hydroxyapatite/polyamide-66 (n-HA/PA66) Cage in interbody fusion for degenerative lumbar scoliosis. Methods A retrospective analysis was designed and conducted for 43 patients, who underwent posterior decompression and n-HA/PA66 Cage interbody fusion with correction of deformity between January 2013 and June 2016. Eighteen cases were single-level fusion (single-level group) and 25 cases were double-level fusion (double-level group). There was no significant difference in gender, age, body mass index, direction of convex, degree of apical rotation, fusion level, the number of osteoporotic patients, pre-operative intervertebral height of fusion segments, coronal Cobb angle, visual analogue score (VAS), and modified Oswestry Disability Index (ODI) between 2 groups ( P>0.05). The operation time, intraoperative blood loss, postoperative drainage, hospital stay, and complications of the operation were recorded. Modified ODI, VAS score, and MacNab criteria were adopted to assess clinical outcomes. Radiographic indexes, including intervertebral height of fusion segments, coronal Cobb angle, disc insertion depth, and the bone graft fusion rate, were also evaluated. Results There was no significant difference in operation time, intraoperative blood loss, postoperative drainage, and hospital stay between 2 groups ( P>0.05). All patients were followed up 18-62 months (mean, 30.9 months). Wound complications, postoperative delirium, and Cage retropulsion occurred in 4 cases (2 cases in single-level group, 2 cases in double-level group), 1 case of single-level group, and 1 case of double-level group, respectively. The intervertebral height of fusion segments after operation significantly improved compared with preoperative ones in both groups ( P<0.05). At last follow-up, the intervertebral height in double-level group was superior to which in single-level group ( P<0.05). The coronal Cobb angles after operation significantly improved compared with preoperative ones ( P<0.05), and no significant difference was found between 2 groups at each time point ( P>0.05). The disc insertion depth showed no significant difference between different time points after operation in 2 groups ( P>0.05) and between 2 groups at each time point after operation ( P>0.05). Bony fusion was obtained in all patients at last follow-up. The VAS score and modified ODI after operation in both groups were superior to those before operation ( P<0.05). The VAS score in double-level group was higher than that in single-level group ( P<0.05) at last follow-up, and no significant difference was found in VAS score and modified ODI between 2 groups at other time points ( P>0.05). According to the MacNab criteria, the excellent and good rates at last follow-up were 94.4% and 84.0% in single-level group and double-level group, respectively. Conclusion The n-HA/PA66 Cage can effectively restore and maintain the disc height of fusion segment, normal sequence, and biomechanical stability of the spine, and gain favorable effectivenss for degenerative lumbar scoliosis. And double-level fusion is superior to single-level fusion in maintaining disc height of fusion segment.
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Affiliation(s)
- Jianyu Hu
- Department of Orthopedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R.China
| | - Yunsheng Ou
- Department of Orthopedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016,
| | - Yong Zhu
- Department of Orthopedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R.China
| | - Wei Luo
- Department of Orthopedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R.China
| | - Zenghui Zhao
- Department of Orthopedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R.China
| | - Xing Du
- Department of Orthopedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R.China
| | - Jianxiao Li
- Department of Orthopedics, the First Affiliated Hospital of Chongqing Medical University, Chongqing, 400016, P.R.China
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