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  • 1
    In: Global Spine Journal, SAGE Publications, Vol. 8, No. 6 ( 2018-09), p. 593-599
    Type of Medium: Online Resource
    ISSN: 2192-5682 , 2192-5690
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
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  • 2
    In: Global Spine Journal, SAGE Publications, Vol. 6, No. 2 ( 2016-03), p. 139-146
    Abstract: Retrospective cohort controlled study. Objective To determine quality-of-life (QOL) outcomes for patients with lumbar spinal stenosis (LSS) treated with membrane-stabilizing agents (MSAs). Methods Patients with LSS and concordant neurogenic claudication treated with MSAs ( n = 701) or conservatively without MSAs ( n = 2104) at a single tertiary care hospital were identified. Patient QOL measures (Patient Health Questionnaire-9 [PHQ9], EuroQOL-5 Dimensions [EQ-5D] , Pain Disability Questionnaire [PDQ]) were recorded pretreatment and then 4 months following treatment. Propensity score matching was used to account for baseline demographic differences between the two groups. The primary outcome measure was posttreatment improvement in these QOL measures. Results Patients in both groups had statistically significant improvements in the EQ-5D. However, the EQ-5D improvement in the MSA group was significantly greater than the improvement in the control group (0.11 versus 0.06; p = 0.0494). The EQ-5D change in the MSA group also exceeded the minimum clinically important difference, thereby suggesting a clinical significance. Both groups had significant pre- to posttreatment improvements in PDQ and PHQ-9, but these changes were not significantly different between the groups. Conclusion The results of this study suggest that patients with LSS and neurogenic claudication can have greater QOL improvements when treated with MSAs compared with other forms of conservative management without MSAs.
    Type of Medium: Online Resource
    ISSN: 2192-5682 , 2192-5690
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
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  • 3
    In: Global Spine Journal, SAGE Publications, Vol. 6, No. 4 ( 2016-06), p. 306-313
    Abstract: Retrospective cohort study. Objective We sought to assess the predictive value of preoperative depression and health state on 1-year quality-of-life outcomes after anterior cervical diskectomy and fusion (ACDF). Methods We analyzed 106 patients who underwent ACDF. All patients had either bilateral or unilateral cervical radiculopathy. Preoperative and 1-year postoperative health outcomes were assessed based on the visual analog scale, Pain Disability Questionnaire (PDQ), Patient Health Questionnaire (PHQ-9), and EuroQol-5 Dimensions (EQ-5D) questionnaire. Univariable and multivariate regression analyses were performed to assess for preoperative predictors of 1-year change in health status according to the EQ-5D. Results Compared with preoperative health states, the ACDF cohort showed statistically significant improved PDQ (78.5 versus 57.9), PHQ-9 (9.7 versus 5.3), and EQ-5D (0.55 versus 0.68) scores at 1 year postoperatively and surpassed the minimum clinically important difference for the EQ-5D of 0.1 units (all p ≤ 0.01). Multivariate linear regression indicated that anxiolytic use and higher EQ-5D preoperative scores were associated with less 1-year postoperative improvement in health status. Although not statistically significant, clinically important effects of preoperative depression, as measured by the PHQ-9, were observed on postoperative QOL outcome (−0.006, 95% confidence interval −0.014 to 0.001). Conclusions Of patients who undergo ACDF with similar preoperative QOL health states, those with a greater degree of depression may have lower improvements in postoperative QOL compared with those with less depression. Patients with anxiety and better preoperative health states also attain less 1-year QOL improvements.
    Type of Medium: Online Resource
    ISSN: 2192-5682 , 2192-5690
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2016
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  • 4
    Online Resource
    Online Resource
    SAGE Publications ; 2019
    In:  Global Spine Journal Vol. 9, No. 2 ( 2019-04), p. 143-149
    In: Global Spine Journal, SAGE Publications, Vol. 9, No. 2 ( 2019-04), p. 143-149
    Abstract: Retrospective cohort. Objectives: There are conflicting reports on the short- and long-term quality of life (QOL) outcomes and cost-effectiveness of cervical epidural steroid injections (ESIs). The present study analyzes the cost-effectiveness analysis of ESIs versus conservative management for patients with radiculopathy or neck pain in the short term. Methods: Fifty patients who underwent cervical ESI and 29 patients who received physical therapy and pain medication alone for cervical radiculopathy and neck pain of 〈 6 months duration were included. Three-month postoperative health outcomes were assessed based on EuroQol-5 Dimensions (EQ-5D; measured in quality-adjusted life years [QALYs]). Medical costs were estimated using Medicare national payment amounts. Cost/utility ratios and the incremental cost-effectiveness ratio (ICER) were calculated to assess for cost-effectiveness. Results: The ESI cohort experienced significant ( P 〈 .01) improvement in the EQ-5D score while the control cohort did not (0.13 vs 0.02 QALYs, respectively; P = .01). There were no significant differences in costs between the cohorts. The cost-utility ratio for the ESI cohort was significantly lower ($21 884/QALY gained) than that for the control cohort ($176 412/QALY gained) ( P 〈 .01). The ICER for an ESI versus conservative management was negative, indicating that ESIs provide greater improvement in QOL at a lower cost. Conclusions: ESIs provide significant improvement in QOL within 3 months for patients with cervical radiculopathy and neck pain. ESIs are more cost-effective compared than conservative management alone in the shor -term. The durability of these results must be analyzed with longer term cost-utility analysis studies.
    Type of Medium: Online Resource
    ISSN: 2192-5682 , 2192-5690
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2019
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  • 5
    Online Resource
    Online Resource
    SAGE Publications ; 2018
    In:  Global Spine Journal Vol. 8, No. 2 ( 2018-04), p. 178-189
    In: Global Spine Journal, SAGE Publications, Vol. 8, No. 2 ( 2018-04), p. 178-189
    Abstract: Systematic review. Objectives: Cervical arthroplasty is an increasingly popular treatment of cervical radiculopathy and myelopathy. An understanding of the potential adverse events (AEs) is important to help both clinicians and patients. We sought to provide a comprehensive systematic review of the AEs reported in all randomized controlled trials (RCTs) of cervical disc arthroplasty in an attempt to characterize the quality of reporting. Methods: We conducted a systematic review of MEDLINE and Web of Science for RCTs of cervical disc arthroplasty reporting AEs. We reported the most frequently mentioned AEs, including dysphagia/dysphonia, vascular compromise, dural injury, and infections. We recorded the presence of industry funding and scored the quality of collection methods and reporting of AEs. Results: Of the 3734 identified articles, 29 articles met full inclusion criteria. The quality of AE reporting varied significantly between studies, and a combined meta-analysis was not feasible. The 29 articles covered separate 19 RCTs. Eight studies were US Food and Drug Administration (FDA) investigational device exemption (IDE) trials. Rates were recorded for the following AEs: dysphagia/dysphonia (range = 1.3% to 27.2%), vascular compromise (range = 1.1% to 2.4%), cervical wound infection (range = 1.2% to 22.5%), and cerebrospinal fluid leak (range = 0.8% to 7.1%). Conclusions: There is a lack of consistency in reporting of AEs among RCTs of cervical arthroplasty. FDA IDE trials scored better in AE event reporting compared to other studies. Standardized definitions for AEs and standardized data collection methodology are needed to improve future studies.
    Type of Medium: Online Resource
    ISSN: 2192-5682 , 2192-5690
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
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  • 6
    In: Global Spine Journal, SAGE Publications, Vol. 8, No. 3 ( 2018-05), p. 244-253
    Abstract: Retrospective trends analysis. Objectives: Cervical fusion is a common adjunctive surgical modality used in the treatment of cervical spondylotic myelopathy (CSM). The purpose of this study was to quantify national trends in patient demographics, hospital characteristics, and outcomes in the surgical management of CSM. Methods: This was a retrospective study that used the National Inpatient Sample. The sample included all patients over 18 years of age with a diagnosis of CSM who underwent cervical fusion from 2003 to 2013. The outcome measures were in-hospital mortality, length of stay, and hospital charges. Chi-square tests were performed to compare categorical variables. Independent t tests were performed to compare continuous variables. Results: We identified 62 970 patients with CSM who underwent cervical fusion from 2003 to 2013. The number of fusions performed per year in the treatment of CSM increased from 3879 to 8181. The average age of all fusion patients increased from 58.2 to 60.6 years ( P 〈 .001). Length of stay did not change significantly from a mean of 3.7 days. In-hospital mortality decreased from 0.6% to 0.3% ( P 〈 .01). Hospital charges increased from $49 445 to $92 040 ( P 〈 .001). Conclusions: This study showed a dramatic increase in cervical fusions to treat CSM from 2003 to 2013 concomitant with increasing age of the patient population. Despite increases in average age and number of comorbidities, length of stay remained constant and a decrease in mortality was seen across the study period. However, hospital charges increased dramatically.
    Type of Medium: Online Resource
    ISSN: 2192-5682 , 2192-5690
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
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  • 7
    In: Global Spine Journal, SAGE Publications, Vol. 2, No. 1 ( 2012-03), p. 015-020
    Abstract: To demonstrate that preservation of all posterior structures during open-door laminoplasty (ODL) is associated with a significant preservation of motion. Methods Fifteen patients underwent cervical ODL by one surgeon for treatment of cervical spondylotic myelopathy. An open-door technique was employed, and the laminae on the open side were reconstructed using miniplates with allograft strut bone graft. All spinous processes and interspinous and supraspinous ligaments were preserved within the operative levels and between supra- and subjacent levels in all patients. Postoperative radiographs were obtained 1.5, 3, 6, and 12 months. Computed tomography scans were obtained at 12 months. Results There were no significant intraoperative or perioperative complications. Postoperatively, the neutral angle was 6.8 ± 11.5 degrees (95% confidence interval: 0.5 to 13.1), representing a loss of lordosis of 3 degrees (not significant). The difference between the preoperative and postoperative arc range of motion was 5.96 ± 11.9 degrees (confidence interval: −0.62 to 12.5). The average percent loss of motion was 3.5% ± (0.1 to 6.9%). Four patients had an increased range of motion postoperatively. Conclusion Open-door laminoplasty with preservation of all posterior structures provides greater preservation of motion than has been previously described.
    Type of Medium: Online Resource
    ISSN: 2192-5682 , 2192-5690
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2012
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  • 8
    Online Resource
    Online Resource
    SAGE Publications ; 2012
    In:  Global Spine Journal Vol. 2, No. 2 ( 2012-06), p. 109-114
    In: Global Spine Journal, SAGE Publications, Vol. 2, No. 2 ( 2012-06), p. 109-114
    Abstract: More than 50% of patients complain of postoperative donor site morbidity following iliac crest bone graft harvest, and recent discoveries have identified adverse outcomes following bone morphogenetic protein use in spine fusion. This has led the spine community to turn toward alternative methods to promote fusion following spine surgery. The present article reviews numerous studies that have shown the osteogenic potential of mesenchymal stem cells (MSCs). MSCs have been used with both in vitro and in vivo models and have involved animal studies ranging from rats to macaque monkeys to successfully induce bone regeneration in lesions of the tibia and spine. There is no fear of graft rejection, as there may be with other allograft materials, because neither undifferentiated nor differentiated MSCs elicit lymphocyte response when transplanted; they tend to alter the cytokine profile to an anti-inflammatory state. Early clinical trials are underway with various commercially available MSC formulations. Although there is much enthusiasm, it is integral that the spine surgery community carefully evaluate the use of MSCs in spine fusion through well-designed and executed studies to determine the efficacy and safety profiles in spine surgery patients.
    Type of Medium: Online Resource
    ISSN: 2192-5682 , 2192-5690
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2012
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  • 9
    In: Global Spine Journal, SAGE Publications, Vol. 4, No. 4 ( 2014-12), p. 279-286
    Abstract: Literature review. Objective Since the 1970s, spine surgeons have commonly required 6 weeks of failed conservative treatment prior to considering surgical intervention for various spinal pathologies. It is unclear, however, if this standard has been validated in the literature. The authors review the natural history, outcomes, and cost-effectiveness studies relating to the current standard of 6 weeks of nonoperative care prior to surgery for patients with spinal pathologies. Methods A systematic Medline search from 1953 to 2013 was performed to identify natural history, outcomes, and cost-effectiveness studies relating to the optimal period of conservative management prior to surgical intervention for both cervical and lumbar radiculopathy. Demographic information, operative indications, and clinical outcomes are reviewed for each study. Results A total of 5,719 studies were identified; of these, 13 studies were selected for inclusion. Natural history studies demonstrated that 88% of patients with cervical radiculopathy and 70% of patients with lumbar radiculopathy showed improvement within 4 weeks following onset of symptoms. Outcomes and cost-effectiveness studies supported surgical intervention within 8 weeks of symptom onset for both cervical and lumbar radiculopathy. Conclusions There are limited studies supporting any optimal duration of conservative treatment prior to surgery for cervical and lumbar radiculopathy. Therefore, evidence-based conclusions cannot be made. Based on the available literature, we suggest that an optimal timing for surgery following cervical radiculopathy is within 8 weeks of onset of symptoms. A shorter period of 4 weeks may be appropriate based on natural history studies. Additionally, we found that optimal timing for surgery following lumbar radiculopathy is between 4 and 8 weeks. A prospective study is needed to explicitly identify the optimal duration of conservative therapy prior to surgery so that costs may be reduced and patient outcomes improved.
    Type of Medium: Online Resource
    ISSN: 2192-5682 , 2192-5690
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2014
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  • 10
    Online Resource
    Online Resource
    SAGE Publications ; 2011
    In:  Global Spine Journal Vol. 1, No. 1 ( 2011-12), p. 009-014
    In: Global Spine Journal, SAGE Publications, Vol. 1, No. 1 ( 2011-12), p. 009-014
    Abstract: Posterior cervical laminoforaminotomy is an effective treatment for cervical radiculopathy due to disc herniations or spondylosis. Over the last decade, minimally invasive (i.e., percutaneous) procedures have become increasingly popular due to a smaller incision size and presumed benefits in postoperative outcomes. We performed a systematic review of the literature and identified studies of open or percutaneous laminoforaminotomy that reported one or more perioperative outcomes. Of 162 publications found by our initial screening, 19 were included in the final analysis. Summative results indicate that patients undergoing percutaneous cervical laminoforaminotomy have lower blood loss by 120.7 mL (open: 173.5 mL, percutaneous: 52.8 mL, n = 670), a shorter surgical time by 50.0 minutes (open: 108.3 minutes, percutaneous: 58.3 minutes, n = 882), less inpatient analgesic use by 25.1 Eq (open: 27.6 Eq, percutaneous: 2.5 Eq, n = 356), and a shorter hospital stay by 2.2 days (open: 3.2 days, percutaneous: 1.0 days, n = 1472), compared with patients undergoing open procedures. However, the heterogeneous nature of published data calls into question the reliability of these summative results. Further structured trials should be conducted to better characterize the risks and benefits of percutaneous laminoforaminotomy.
    Type of Medium: Online Resource
    ISSN: 2192-5682 , 2192-5690
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2011
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