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Spine Journal: Official Journal of the North American Spine Society

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https://www.readbyqxmd.com/read/28087450/item-response-theory-analysis-to-evaluate-reliability-and-minimal-clinically-important-change-of-the-roland-morris-disability-questionnaire-in-patients-with-severe-disability-due-to-back-pain-from-vertebral-compression-fractures
#1
Minji K Lee, Kathleen J Yost, Jennifer S McDonald, Ryne W Dougherty, Roanna L Vine, David F Kallmes
BACKGROUND CONTEXT: The majority of validation done on the Roland-Morris Disability Questionnaire (RMDQ) has been in patients with mild or moderate low disability. There is paucity of research focusing on the psychometric quality of the RMDQ in patients with severe disability. PURPOSE: To evaluate the psychometric quality of the RMDQ in patients with severe disability. STUDY DESIGN/SETTING: Observational clinical study SAMPLE: The sample consisted of 214 patients with painful vertebral compression fractures who underwent vertebroplasty or kyphoplasty...
January 10, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28065817/reproducibility-of-sagittal-radiographic-parameters-in-adolescent-idiopathic-scoliosis-a-guide-to-reference-values-using-serial-imaging
#2
Hwee Weng Dennis Hey, Gordon Chengyuan Wong, Chloe Chan Xiaoyun, Leok-Lim Lau, Naresh Kumar, Joseph Shantakumar Thambiah, John Nathaniel Ruiz, Ka-Po Gabriel Liu, Hee-Kit Wong
BACKGROUND CONTEXT: Knowledge of sagittal radiographical parameters in AIS patients has not yet caught up with our understanding of their roles in patients with adult spinal deformity. It is likely that more emphasis will be placed in restoring sagittal parameters for AIS patients in the future. Therefore we need to understand how these parameters may vary in AIS to facilitate management plans. PURPOSE: To determine the reproducibility of sagittal spinal parameters on lateral film radiographs in patients with AIS...
January 5, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28034746/new-imaging-characteristics-for-predicting-postoperative-neurological-status-in-patients-with-metastatic-epidural-spinal-cord-compression-a-retrospective-analysis-of-81-cases
#3
Mingxing Lei, Shubin Liu, Shaoxing Yang, Yaosheng Liu, Cheng Wang, Hongjun Gao
BACKGROUND CONTEXT: Several clinical features have been proposed for prediction of postoperative functional outcome in patients with metastatic epidural spinal cord compression (MESCC). However, few articles address the relationship between preoperative imaging characteristics and the postoperative neurological status. PURPOSE: This study aims to analyze the postoperative functional outcome and identify new imaging parameters for predicting postoperative neurological status in patients with MESCC...
December 26, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27988343/influence-of-the-mental-health-status-on-a-new-measure-of-objective-functional-impairment-in-lumbar-degenerative-disc-disease
#4
Martin N Stienen, Nicolas R Smoll, Holger Joswig, Jan Snagowski, Marco V Corniola, Karl Schaller, Gerhard Hildebrandt, Oliver P Gautschi
BACKGROUND CONTEXT: The Timed Up and Go (TUG) test has recently been proposed as a simple and standardized measure for objective functional impairment (OFI) in patients with lumbar degenerative disc disease (DDD). PURPOSE: The study aimed to explore the relationship between a patient's mental health status and both patient-reported outcome measures (PROMs) and TUG test results. STUDY DESIGN/SETTING: This is a prospective institutional review board-approved two-center study...
December 14, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27988342/prognostic-factors-in-patients-with-spinal-metastasis-a-systematic-review-and-meta-analysis
#5
Panya Luksanapruksa, Jacob M Buchowski, William Hotchkiss, Sasima Tongsai, Sirichai Wilartratsami, Areesak Chotivichit
BACKGROUND CONTEXT: Incidence of symptomatic spinal metastasis has increased due to improvement in treatment of the disease. One of the key factors that influences decision-making is expected patient survival. To our knowledge, no systematic reviews or meta-analysis have been conducted which review independent prognostic factors in spinal metastases PURPOSE: To determine independent prognostic factors that affect outcome in patients with metastatic spine disease. STUDY DESIGN: Systematic literature review and meta-analysis of publications for prognostic factors in spinal metastatic disease...
December 14, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27988341/can-lumbosacral-orthoses-cause-trunk-muscle-weakness-a-systematic-review-of-literature
#6
REVIEW
Fatemeh Azadinia, Esmaeil Ebrahimi Takamjani, Mojtaba Kamyab, Mohamad Parnianpour, Jacek Cholewicki, Nader Maroufi
BACKGROUND: Wearing lumbosacral orthosis (LSO) is one of the most common treatments prescribed for conservative management of low back pain. While the results of randomized controlled trials suggest effectiveness of LSO in reducing pain and disability in these patients, there is a concern that prolonged use of LSO may lead to trunk muscle weakness and atrophy. PURPOSE: The present review aimed to evaluate available evidence in literature to determine whether LSO result in trunk muscle weakness and/or atrophy...
December 14, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27939747/maximum-pain-on-visual-analog-scales-in-spinal-disorders
#7
Caleb J Behrend, Etienne M Schönbach, Alexander R Vaccaro, Ellen Coyne, Mark L Prasarn, Glenn R Rechtine
BACKGROUND CONTEXT: Determining pain intensity is largely dependent on the patient's report. PURPOSE: The objective of this study was to test the hypothesis that patients initially reporting a pain score of 10 out of 10 on the visual analog scale (VAS) would experience symptom improvement to a degree similar to patients reporting milder pain. STUDY DESIGN: This study is a retrospective chart review. PATIENT SAMPLE: A total of 6,779 patients seeking care for spinal disorders were included in the study...
December 6, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27916685/finding-the-right-fit-studying-the-biomechanics-of-under-tapping-with-varying-thread-depths-and-pitches
#8
Ehsan Jazini, Carmen Petraglia, Mark Moldavsky, Oliver Tannous, Tristan Weir, Comron Saifi, Omar Elkassabany, Yiwei Cai, Brandon Bucklen, Joseph O'Brien, Steven C Ludwig
BACKGROUND CONTEXT: Compromise of pedicle screw purchase is a concern in maintaining rigid spinal fixation, especially with osteoporosis. Little consistency exists among various tapping techniques. Pedicle screws are often prepared with taps of a smaller diameter, which can further exacerbate inconsistency. PURPOSE: The objective of this study was to determine whether a mismatch between tap thread depth (D) and thread pitch (P) and screw D and P affects fixation when under-tapping in osteoporotic bone...
December 1, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27916684/the-impact-of-obesity-on-compensatory-mechanisms-in-response-to-progressive-sagittal-malalignment
#9
Cyrus M Jalai, Bassel G Diebo, Dana L Cruz, Gregory W Poorman, Shaleen Vira, Aaron J Buckland, Renaud Lafage, Shay Bess, Thomas J Errico, Virginie Lafage, Peter G Passias
BACKGROUND CONTEXT: Obesity's impact on standing sagittal alignment remains poorly understood, especially with respect to the role of the lower-limbs. Given energetic expenditure in standing, a complete understanding of compensation in obese patients with sagittal malalignment remains relevant. PURPOSE: This study compares obese and non-obese patients with progressive sagittal malalignment for differences in recruitment of pelvic and lower limb mechanisms. STUDY DESIGN/SETTING: Single center retrospective review...
December 1, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27916683/factor-analyses-for-the-%C3%A3-rebro-musculoskeletal-pain-questionnaire-for-working-and-nonworking-patients-with-chronic-low-back-pain
#10
Remko Soer, Patrick Vroomen, Roy Stewart, Maarten Coppes, Patrick Stegeman, Pieter Dijkstra, Michiel Reneman
BACKGROUND CONTEXT: The Örebro Musculoskeletal Pain Questionnaire (ÖMPQ) has good psychometric properties to predict return to work in patients with acute low back pain. Although it is used in patients with chronic back pain and nonworkers, there is no evidence on the factor structure of the ÖMPQ in these populations. This is deemed an important prerequisite for future prediction studies. PURPOSE: This study aimed to analyze the factor structure of the ÖMPQ in working and nonworking patients with chronic back pain...
December 1, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27888138/the-quality-of-placebos-used-in-randomized-controlled-trials-of-lumbar-and-pelvic-joint-thrust-manipulation-a-systematic-review
#11
REVIEW
Aaron A Puhl, Christine J Reinhart, Jon B Doan, Howard Vernon
BACKGROUND CONTEXT: Spinal manipulative therapy (SMT) has been attributed with substantial non-specific effects. Accurate assessment of the non-specific effects of SMT relies on high-quality studies with low risk of bias that compare with appropriate placebos. PURPOSE: This review aims to characterize the types and qualities of placebo control procedures used in controlled trials of manually applied, lumbar and pelvic (LP)-SMT, and to evaluate the assessment of subject blinding and expectations...
November 22, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27884745/increase-in-spinal-deformity-surgery-in-patients-age-60-and-older-is-not-associated-with-increased-complications
#12
David C Sing, Sigurd H Berven, Shane Burch, Lionel N Metz
BACKGROUND CONTEXT: Surgical treatment for adult spinal deformity improves patient quality of life; however, trends in surgical utilization in the elderly, who may be at higher risk for complications, remain unclear. PURPOSE: To identify trends in the utilization of adult deformity and determine complication rates among older patients. STUDY DESIGN: This is a retrospective database analysis. PATIENT SAMPLE: The Nationwide Inpatient Sample database was queried from 2004 to 2011 to identify adult patients who underwent spinal fusion of eight or more levels using International Classification of Diseases, Ninth Revision (ICD-9) coding...
November 21, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27884744/technical-description-of-oblique-lateral-interbody-fusion-at-l1-l5-olif25-and-at-l5-s1-olif51-and-evaluation-of-complication-and-fusion-rates
#13
Kamal R M Woods, James B Billys, Richard A Hynes
BACKGROUND: The OLIF procedure is aimed at mitigating some of the challenges seen with traditional ALIF and transpsoas LLIF and allows for interbody fusion at L1-S1. PURPOSE: To describe the OLIF technique and assess the complication and fusion rates. STUDY DESIGN: A retrospective cohort study. PATIENT SAMPLE: 137 patients who underwent the oblique lateral interbody fusion (OLIF) procedure. OUTCOME MEASURES: Adverse events within 6 months of surgery: Infection, symptomatic pseudarthrosis, hardware failure, vascular injury, perioperative blood transfusion, ureteral injury, bowel injury, renal injury, prolonged postoperative ileus (greater than 3 days), incisional hernia, pseudohernia, reoperation, neurological deficits (weakness, numbness, paresthesia), hip flexion pain, retrograde ejaculation, sympathectomy affecting lower extremities, deep vein thrombosis, pulmonary embolism, myocardial infarction, pneumonia, and cerebrovascular accident...
November 21, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27884743/mortality-and-morbidity-after-spinal-surgery-in-patients-with-parkinson-disease-a-retrospective-matched-pair-cohort-study
#14
Takeshi Oichi, Hirotaka Chikuda, Junichi Ohya, Ryo Ohtomo, Kojiro Morita, Hiroki Matsui, Kiyohide Fushimi, Sakae Tanaka, Hideo Yasunaga
BACKGROUND CONTEXT: There is a lack of information about postoperative outcomes and related risk factors associated with spinal surgery in patients with Parkinson disease (PD). PURPOSE: This study aimed to investigate the postoperative morbidity and mortality associated with spinal surgery for patients with PD, and the risk factors for poor outcomes. STUDY DESIGN: This is a retrospective matched-pair cohort study. PATIENT SAMPLE: Data of patients who underwent elective spinal surgery between July 2010 and March 2013 were extracted from the Diagnosis Procedure Combination database, a nationwide inpatient database in Japan...
November 21, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27867081/defining-the-number-and-type-of-fixation-anchors-for-optimal-main-curve-correction-in-posterior-surgery-for-adolescent-idiopathic-scoliosis
#15
Jean-Marc Mac-Thiong, Sameh Ibrahim, Stefan Parent, Hubert Labelle
BACKGROUND CONTEXT: The number and type of fixation anchors to use during posterior surgery for adolescent idiopathic scoliosis (AIS) is still debated, and the relationship with curve correction remains unclear. PURPOSE: This study aimed to determine the number and type of fixation anchors associated with optimal curve correction following posterior surgery for AIS. STUDY DESIGN: A retrospective study of the relationship between fixation anchors and main curve correction in AIS surgery was carried out...
November 17, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27867080/biomechanical-advantages-of-robot-assisted-pedicle-screw-fixation-in-posterior-lumbar-interbody-fusion-compared-with-freehand-technique-in-a-prospective-randomized-controlled-trial-perspective-for-patient-specific-finite-element-analysis
#16
Ho-Joong Kim, Kyoung-Tak Kang, Sung-Cheol Park, Oh-Hyo Kwon, Juhyun Son, Bong-Soon Chang, Choon-Ki Lee, Jin S Yeom, Lawrence G Lenke
BACKGROUND CONTEXT: There have been conflicting results on the surgical outcome of lumbar fusion surgery using two different techniques: robot-assisted pedicle screw fixation and conventional freehand technique. In addition, there have been no studies about the biomechanical issues between both techniques. PURPOSE: This study aimed to investigate the biomechanical properties in terms of stress at adjacent segments using robot-assisted pedicle screw insertion technique (robot-assisted, minimally invasive posterior lumbar interbody fusion, Rom-PLIF) and freehand technique (conventional, freehand, open approach, posterior lumbar interbody fusion, Cop-PLIF) for instrumented lumbar fusion surgery...
November 17, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27867079/variability-in-diagnostic-error-rates-of-10-mri-centers-performing-lumbar-spine-mri-examinations-on-the-same-patient-within-a-3-week-period
#17
Richard Herzog, Daniel R Elgort, Adam E Flanders, Peter J Moley
BACKGROUND CONTEXT: In today's health-care climate, magnetic resonance imaging (MRI) is often perceived as a commodity-a service where there are no meaningful differences in quality and thus an area in which patients can be advised to select a provider based on price and convenience alone. If this prevailing view is correct, then a patient should expect to receive the same radiological diagnosis regardless of which imaging center he or she visits, or which radiologist reviews the examination...
November 17, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27865885/perforations-and-angulations-of-324-cervical-medial-cortical-pedicle-screws-a-possible-guide-to-avoid-lateral-perforations-with-use-of-pedicle-screws-in-lower-cervical-spine
#18
Bijjawara Mahesh, Bidre Upendra, Sekharappa Vijay, Kumar Arun, Reddy Srinivasa
BACKGROUND CONTEXT: More than half of the perforations reported with usage of cervical pedicle screws (CPS) are lateral perforations, endangering the vertebral artery. The medial cortical pedicle screw (MCPS) technique with partial drilling of the medial cortex shifts the trajectory of pedicle screws medially, decreasing the lateral perforations. PURPOSE: To evaluate the decrease in lateral perforations of CPS with use of MCPS technique, in relation to medial angulation...
November 16, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27871820/enhanced-bone-formation-in-sheep-vertebral-bodies-after-minimally-invasive-treatment-with-a-novel-plga-fiber-reinforced-brushite-cement
#19
Stefan Maenz, Olaf Brinkmann, Elke Kunisch, Victoria Horbert, Francesca Gunnella, Sabine Bischoff, Harald Schubert, Andre Sachse, Long Xin, Jens Günster, Bernhard Illerhaus, Klaus D Jandt, Jörg Bossert, Raimund W Kinne, Matthias Bungartz
BACKGROUND CONTEXT: Injectable, brushite-forming calcium phosphate cements (CPC) show potential for bone replacement, but they exhibit low mechanical strength. This study tested a CPC reinforced with poly(l-lactide-co-glycolide) acid (PLGA) fibers in a minimally invasive, sheep lumbar vertebroplasty model. PURPOSE: The study aimed to test the in vivo biocompatibility and osteogenic potential of a PLGA fiber-reinforced, brushite-forming CPC in a sheep large animal model...
November 15, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27871819/c7-sagittal-vertical-axis-is-the-determinant-of-the-c5-c7-angle-in-cervical-sagittal-alignment
#20
Yoshitaka Matsubayashi, Hirotaka Chikuda, Yasushi Oshima, Yuki Taniguchi, Yoh Fujimoto, Takachika Shimizu, Sakae Tanaka
BACKGROUND CONTEXT: Previous studies have indicated that the T1 slope correlates with cervical lordosis. In contrast, the specific impact of the C7 sagittal vertical axis (C7SVA) on cervical lordosis remains unknown. PURPOSE: This study aimed to investigate the specific role of C7SVA in cervical lordosis. STUDY DESIGN/SETTING: This was a retrospective radiographic study. PATIENT SAMPLE: Forty-eight consecutive patients who underwent lateral standing radiography of the entire spine were retrospectively reviewed...
November 15, 2016: Spine Journal: Official Journal of the North American Spine Society
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