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Spine Journal: Official Journal of the North American Spine Society

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https://www.readbyqxmd.com/read/28232052/does-sedentary-behavior-increase-the-risk-of-low-back-pain-a-population-based-co-twin-study-of-spanish-twins
#1
Anita B Amorim, Gavin M Levy, Francisco Pérez-Riquelme, Milena Simic, Evangelos Pappas, Amabile B Dario, Manuela L Ferreira, Eduvigis Carrillo, Alejandro Luque-Suarez, Juan R Ordoñana, Paulo H Ferreira
BACKGROUND: The relationship between sedentary lifestyle and low back pain (LBP) remains unclear and previous research has not accounted for genetic and early environmental factors. PURPOSE: Our aim was to investigate if sedentary behavior is associated with the lifetime prevalence of persistent LBP and the risk of developing persistent LBP, care-seeking due to LBP, and activity limiting LBP when genetics and early environmental factors are accounted for. STUDY DESIGN: Both cross-sectional and longitudinal designs with a within-pair twin case-control were implemented...
February 14, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28232051/is-the-clinical-cervical-extensor-endurance-test-capable-of-differentiating-the-local-and-global-muscles
#2
Amir H Kahlaee, Asghar Rezasoltani, Leila Ghamkhar
BACKGROUND CONTEXT: Differential alterations have been reported in the local and global cervical muscles in the presence of chronic neck pain (CNP), including the endurance alterations of these muscles. Identifying the involved muscles is crucial to the assessment and rehabilitation of these patients. PURPOSE: To assess the relationship between clinical endurance test results, pain and disability indices and ultrasonographic (US) measurements of the neck extensor muscles; to compare the deep and superficial cervical extensor muscles endurance and size of CNP patients with those of asymptomatic subjects and to compare the relationship between local and global extensor endurance with US measures, pain intensity and disability...
February 13, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28185981/analysis-of-the-s2-alar-iliac-screw-as-compared-with-the-traditional-iliac-screw-does-it-increase-stability-with-sacroiliac-fixation-of-the-spine
#3
Daniel G Hoernschemeyer, Troy D Pashuck, Ferris M Pfeiffer
BACKGROUND CONTEXT: Arthrodesis of the lumbosacral junction continues to be a challenge in pediatric and adult spinal deformity surgery. PURPOSE: To evaluate the biomechanical rigidity of two types of lumbosacral fixation. Our hypothesis was that the use of S2 alar-iliac (S2AI) fixation will result in statistically similar biomechanical fixation as compared with use of an iliac screw with a 95% confidence interval. STUDY SETTING: Controlled biomechanical laboratory METHODS: Ten human cadaveric lumbosacral specimens were separated into two test groups: (1) S2AI (n=5) and (2) iliac screw (n=5)...
February 6, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28185980/a-new-quantitative-measure-of-disc-degeneration
#4
Tapio Videman, Michele C Battié, Laura E Gibbons, Kevin Gill
BACKGROUND CONTEXT: The ability to adequately measure a phenomenon is critical to studying and understanding it. Since 1957, a variety of subjective visual grading methods have been used to assess disc degeneration, but have been limited by gross ordinal scales and imprecision, as well as suboptimal reliability. Conceptually sound, objective, precise measurements are needed to advance knowledge of disc degeneration and its causes, progression and consequences. PURPOSE: To investigate the reliability and validity of a new system ('SpIn' for Spine Insight) to quantitatively measure lumbar disc degeneration or pathology...
February 6, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28167249/how-are-adjacent-spinal-levels-affected-by-vertebral-fracture-and-by-vertebroplasty-a-biomechanical-study-on-cadaveric-spines
#5
Jin Luo, Deborah J Annesley-Williams, Michael A Adams, Patricia Dolan
BACKGROUND CONTEXT: Spinal injuries and surgery may have important effects at neighbouring spinal levels, but previous investigations of adjacent-level biomechanics have produced conflicting results. We use 'stress profilometry' and non-contact strain measurements to investigate thoroughly this long-standing problem. PURPOSE: To determine how vertebral fracture and vertebroplasty affect compressive load-sharing and vertebral deformations at adjacent spinal levels...
February 3, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28163210/are-people-with-chronic-low-back-pain-meeting-the-physical-activity-guidelines-a-co-twin-control-study
#6
Joshua Robert Zadro, Debra Shirley, Anita Amorim, Francisco Pérez-Riquelme, Juan R Ordoñana, Paulo H Ferreira
BACKGROUND: Despite a large amount of research investigating physical activity (PA) levels in people with chronic low back pain (LBP), no study has investigated whether people with chronic LBP are meeting the World Health Organization (WHO) PA guidelines. Furthermore, with genetics and the early shared environment substantially influencing the presence of LBP and PA engagement, these factors could confound the association between LBP and PA and need to be controlled for. PURPOSE: This study aimed to investigate the association between chronic LBP and meeting the PA guidelines, while controlling for the effects of genetics and early shared environment...
February 2, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28126356/efficacy-comparison-of-accell-evo3%C3%A2-and-grafton%C3%A2-demineralized-bone-matrix-putties-against-autologous-bone-in-a-rat-posterolateral-spine-fusion-model
#7
Antonio T Brecevich, Paul D Kiely, B Victor Yoon, Joseph T Nguyen, Frank P Cammisa, Celeste Abjornson
BACKGROUND CONTEXT: Spinal fusion procedures are intended to stabilize the spinal column for a multitude of disorders including abnormal curvature, traumatic instability, degenerative instability, and damage from infections or tumors. As an aid in the bone healing response, bone graft materials are utilized to bridge joints for arthrodesis and promote unions in pseudoarthrosis. Currently, the gold standard for stabilizing fusion masses in spinal procedures involves utilizing the osteogenic, osteoinductive, and osteoconductive properties of autologous iliac crest cortico-cancellous bone...
January 23, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28108405/defects-of-the-vertebral-endplate-implications-for-disc-degeneration-depend-on-size
#8
Uruj Zehra, Luke Flower, Katharine Robson-Brown, Michael A Adams, Patricia Dolan
BACKGROUND CONTEXT: Bony vertebral endplates must be porous to allow metabolite transport into the disc, and yet strong to resist high intradiscal pressure. Endplate defects may therefore have nutritional and mechanical consequences for the disc, depending on their size and type. We hypothesise that broad, diffuse defects are more closely associated with disc decompression and degeneration than are focal Schmorl's node-type defects. PURPOSE: To determine how the size and type of endplate defects are related to decompression and degeneration in the adjacent intervertebral disc...
January 17, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28108404/annulus-fibrosus-cells-express-and-utilize-c-c-chemokine-receptor-5-ccr5-for-migration
#9
Weijun Liu, David Liu, Justin Zheng, Peng Shi, Po-Hsin Chou, Chundo Oh, Di Chen, Howard S An, Ana Chee
BACKGROUND CONTEXT: Disc degeneration is associated with the progressive loss of the proteoglycan content of the intervertebral disc, decreased matrix synthesis, higher concentrations of proteolytic enzymes, and increased levels of proinflammatory cytokines. In previous studies, we have shown that C-C chemokine ligand (CCL)2, CCL3, and CCL5 are highly expressed by cultured nucleus pulposus (NP) and annulus fibrosus (AF) cells that have been treated by interleukin-1. The major function of these chemokines is to recruit immune cells into the disc...
January 17, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28108403/risk-of-cement-leakage-and-pulmonary-embolism-by-bone-cement-augmented-pedicle-screw-fixation-of-the-thoracolumbar-spine
#10
Insa Janssen, Yu-Mi Ryang, Jens Gempt, Stefanie Bette, Julia Gerhardt, Jan S Kirschke, Bernhard Meyer
BACKGROUND: Cement-augmented pedicle screw instrumentation (CAPSI) of the thoracolumbar spine is indicated in osteoporosis or osteopenia to improve pullout strength and biomechanical stability of pedicle screws (PS). Only a few studies report on the incidence of pulmonary cement embolism or other complications associated with CAPSI. PURPOSE: The aim of this retrospective study was to assess the rate of CAPSI-associated complications. STUDY DESIGN: Retrospective cohort study...
January 17, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28104459/validation-of-the-intervertebral-disc-histological-degeneration-score-in-cervical-intervertebral-discs-and-their-end-plates
#11
Krzysztof A Tomaszewski, Brandon Michael Henry, Tomasz Gładysz, Roman Głowacki, Jerzy A Walocha, Romana Tomaszewska
BACKGROUND CONTEXT: Vertebral joints consist of intervertebral discs (IVDs) and cartilaginous end plates (EP) that lie superiorly and inferiorly to the IVDs and separate them from the adjacent vertebral bodies. With aging, both IVDs and EPs undergo degeneration. The Histologic Degeneration Score (HDS) is a grading system that microscopically evaluates the degree of degeneration in lumbar discs and predicts it with high accuracy basing on several histological markers of IVD and EP. There is currently a lack of validated histologic grading schemes for cervical spine degeneration...
January 16, 2017: Spine Journal: Official Journal of the North American Spine Society
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
#12
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/28089819/lentivirus-mediated-silencing-of-the-ctgf-gene-suppresses-the-formation-of-glial-scar-tissue-in-a-rat-model-of-spinal-cord-injury
#13
Yuan Wang, Qin-Jie Kong, Jing-Chuan Sun, Yong Yang, Hai-Bo Wang, Qiang Zhang, Jian-Gang Shi
BACKGROUND CONTEXT: - One of the many reactive changes following an Spinal cord injury (SCI) is the formation of a glial scar, a reactive cellular process whereby glial cells accumulate and surround central nervous system (CNS) injury sites to seal in the wound. Thus the inhibition of glial scar is of great importance for SCI recovery. PURPOSE: - This study aimed to explore the effect of lentivirus-mediated silencing of the CTGF gene on the formation of glial scar tissue in a rat model of spinal cord injury (SCI)...
January 9, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28089818/notochordal-cell-derived-conditioned-medium-nccm-protects-human-nucleus-pulposus-cells-from-stress-induced-apoptosis
#14
Arne Mehrkens, Ajay Matta, M Zia Karim, Sarah Kim, Michael G Fehlings, Stefan Schaeren, W Mark Erwin
BACKGROUND CONTEXT: Degenerative Disc Disease (DDD) remains without an effective therapy and presents a costly burden to society. PURPOSE: Based upon prior reports concerning the effects of notochordal cell conditioned medium (NCCM) upon disc cells, we performed a proof of principle study to determine whether NCCM could reduce cytotoxic stress induced apoptosis in human disc nucleus pulpous (NP) cells. STUDY DESIGN/SETTING: 'in vitro' fundamental/basic science study METHODS: NP cells derived from 15 patients undergoing spinal surgery were treated with interleukin 1β (IL-1β) and Fas ligand (FasL) or etoposide in the presence of NCCM...
January 9, 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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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