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Spine Journal: Official Journal of the North American Spine Society

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https://www.readbyqxmd.com/read/28823940/impact-of-bone-quality-on-the-performance-of-integrated-fixation-cage-screws
#1
Vivek Palepu, Melvin D Helgeson, Michael Molyneaux-Francis, Srinidhi Nagaraja
BACKGROUND CONTEXT: Commercially available lumbar integrated fixation cages (IFC) have variable designs. For example screw based designs have up to four screws inserted at different locations across the vertebral endplate as well as at different angles in the sagittal and transverse planes. This is important as endplate and trabecular bone quality may vary across the vertebra and affect the screw's fixation ability, particularly if bone purchase at the bone-screw interface is poor. PURPOSE: To evaluate whether variations in local bone quality surrounding IFC screws inserted at different locations in the vertebrae would affect their mechanical performance...
August 17, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28823939/prevalence-and-related-clinical-factors-of-thoracic-ossification-of-the-ligamentum-flavum-a-ct-based-cross-sectional-study
#2
Sang-Il Kim, Kee-Yong Ha, Jin-Woo Lee, Young-Hoon Kim
BACKGROUND TEXT: Thoracic ossification of the ligamentum flavum (TOLF) is an uncommon pathology but it may sometimes grow and cause serious neurologic manifestations. Little has been demonstrated yet about the epidemiology and etiology of TOLF PURPOSE: To estimate the prevalence and clinical characteristics of TOLF DESIGN: Cross-sectional study PATIENT SAMPLE: All individuals who had undergone chest computed tomography (CT) for the evaluation of pulmonary disease or for medical examination for one year at our institute OUTCOME MEASURES: Presence of TOLF and the association of these findings with thoracic kyphosis (TK), ossification of posterior longitudinal ligament (OPLL), space available for cord (SAC), age, gender, body mass index (BMI), and diabetes...
August 17, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28823938/the-mechanism-of-thoracolumbar-burst-fracture-may-be-related-to-the-basivertebral-foramen
#3
Xuyang Zhang, Shengyun Li, Xing Zhao, Blaine A Christiansen, Shunwu Fan, Fengdong Zhao, Jian Chen
BACKGROUND CONTEXT: The basivertebral foramen (BF), located in the middle posterior wall of the vertebral body, may induce local weakness and contribute to the formation of a retropulsed bone fragment (RBF) in thoracolumbar burst fracture (TLBF). We hypothesize that the mechanism of TLBF is related to the BF. PURPOSE: To clarify the relationship between retropulsed bone fragments and the basivertebral foramen in thoracolumbar burst fractures, and to explain the results using biomechanical experiments and micro-CT...
August 17, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28823937/risk-of-aspirin-continuation-in-spinal-surgery-a-systematic-review-and-meta-analysis
#4
REVIEW
R Goes, I S Muskens, T R Smith, R A Mekary, M L D Broekman, W A Moojen
BACKGROUND CONTEXT: Aspirin is typically discontinued in spinal surgery because of increased risk of haemorrhagic complications. The risk of peri-operative continuation of aspirin in neurosurgery needed to be evaluated. PURPOSE: To evaluate all available evidence about continuation of aspirin and to compare peri- and post-operative blood loss and complication rates between patients that continued aspirin and those who discontinued aspirin peri-operatively in spinal surgery...
August 17, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28822826/depression-is-associated-with-the-long-term-outcome-of-lumbar-spinal-stenosis-surgery-a-10-year-follow-up-study
#5
Iina Tuomainen, Maarit Pakarinen, Timo Aalto, Sanna Sinikallio, Heikki Kröger, Heimo Viinamäki, Olavi Airaksinen
BACKGROUND CONTEXT: Depression is associated with greater postoperative disability in lumbar spinal stenosis (LSS) patients. No previous studies have reported the association in a 10-year follow-up. PURPOSE: To evaluate the association between preoperative and postoperative depressive symptoms and the surgical outcome among LSS patients in a 10-year follow-up. In addition, we examined the effects of the depressive burden on the surgical outcome. DESIGN: A prospective observational follow-up study...
August 16, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28822825/comparison-of-transforaminal-lumbar-interbody-fusion-outcomes-in-patients-receiving-rhbmp-2-versus-autograft
#6
Taleef R Khan, Kalin R Pearce, Steven J McAnany, Colleen M Peters, Munish C Gupta, Lukas P Zebala
BACKGROUND CONTEXT: Recombinant human bone morphogenetic protein 2 (rhBMP-2) plays a pivotal role in complex spine surgery. Despite its limited approval, the off-label use of rhBMP-2 is prevalent, particularly in transforaminal lumbar interbody fusions (TLIF) PURPOSE: To determine the effectiveness and safety of rhBMP-2 use in TLIF procedures versus autograft. STUDY DESIGN: Retrospective Cohort Study PATIENT SAMPLE: Patients older than 18 years undergoing spine surgery for lumbar degenerative spine disease at a single academic institution...
August 16, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28822824/using-spinopelvic-parameters-to-estimate-residual-lumbar-lordosis-assuming-previous-lumbosacral-fusion-a-study-of-normative-values
#7
Hwee Weng Dennis Hey, Kimberly-Anne Tan, Shashidhar Bangalore Kantharajanna, Alex Quok An Teo, Chloe Xiaoyun Chan, Ka-Po Gabriel Liu, Hee-Kit Wong
BACKGROUND CONTEXT: Pelvic Incidence (PI) = Pelvic Tilt (PT) + Sacral Slope (SS) is an established trigonometric equation which can be expanded from studying the fixed pelvis with the spine to a fixed spinopelvic complex with the remnant spine, in scenarios of spinopelvic fusion or ankylosis. For a fixed spinopelvic complex, we propose the equation termed: Lumbar Incidence (LI) = Lumbar Tilt (LT) + Lumbar Slope (LS). PURPOSE: To establish reference values for LI, LT and LS at each lumbar vertebral level, and to show how LI can be used to determine rLL...
August 16, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28822823/on-gender-roles-in-spine-surgery
#8
Deeptee Jain
No abstract text is available yet for this article.
August 16, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28822822/preventable-diagnostic-errors-in-fatal-cervical-spine-injuries-a-nationwide-register-based-study-from-1987-to-2010
#9
Tuomo Thesleff, Tero Niskakangas, Teemu Luoto, Grant L Iverson, Juha Öhman, Antti Ronkainen
BACKGROUND: Fall-induced injuries in patients are increasing in number and they often lead to serious consequences, such as cervical spine injuries (CSI). CSI diagnostics remain a challenge despite improved radiological services. PURPOSE: Our aim is to define the incidence and risk factors for diagnostic errors among patients who died following a CSI. STUDY DESIGN/SETTING: Retrospective death certificate-based study of the whole population of XXX...
August 16, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28821444/circumferential-fusion-a-comparative-analysis-between-anterior-lumbar-interbody-fusion-with-posterior-pedicle-screw-fixation-and-transforaminal-lumbar-interbody-fusion-for-l5-s1-isthmic-spondylolisthesis
#10
Erik Y Tye, Joseph E Tanenbaum, Andrea S Alonso, Roy Xiao, Michael P Steinmetz, Thomas E Mroz, Jason W Savage
BACKGROUND CONTEXT: Transforaminal lumbar interbody fusion (TLIF) or anterior lumbar interbody fusion with percutaneous pedicle screws (ALIFPS) offer significantly higher radiographic fusion rates than other fusion techniques for L5-S1 isthmic spondylolisthesis (IS). As it stands, there is a relative paucity of comparative data of the two techniques. PURPOSE: To define the clinical, radiographic, and financial differences between TLIF and ALIFPS for L5-S1 IS. STUDY DESIGN/SETTING: A retrospective cohort study conducted at a single-tertiary care center...
August 15, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28821443/the-effect-of-pelvic-motion-on-spino-pelvic-parameters
#11
Andrew M Hayden, Ann M Hayes, Jennifer L Brechbuhler, Heidi Israel, Howard M Place
BACKGROUND CONTEXT: To date, many studies have examined how pelvic position affects the spinal curvature and spino-pelvic parameters. However, these studies focus on a static relationship, comparing pelvis and spine in a relaxed or baseline position only. Indeed, the spino-pelvic connection is dynamic, as a subject can easily be taught to rotate their pelvis anteriorly or posteriorly on the femoral head, all while maintaining an erect posture. Therefore, for a true understanding of pelvic influence on the spinal column, it is necessary to examine spino-pelvic parameters in multiple pelvic positions within the same subject...
August 15, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28821442/time-in-brace-where-are-the-limits-and-how-can-we-improve-compliance-and-reduce-negative-psychosocial-impact-in-scoliosis-patients-a-retrospective-analysis
#12
Markus Rafael Konieczny, Paula Hieronymus, Rüdiger Krauspe
Background Brace treatment for adolescent idiopathic scoliosis (AIS) is generally prescribed for 18 - 23 hours per day, but the minimal time of brace wear per day to stop progression of AIS is still unclear. Compliance of AIS patients with brace treatment is reported to be between 27% and 47% of the prescribed time, especially brace wear at school is often described as embarrassing by the adolescent patients. It has been reported that a higher rate of compliance leads to a significantly lower rate of curve progression...
August 15, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28818564/validity-of-a-smartphone-protractor-to-measure-sagittal-parameters-in-adult-spinal-deformity
#13
William Aaron Kunkle, Michael Madden, Shannon Potts, Jeremy Fogelson, Stuart Hershman
BACKGROUND CONTEXT: Smartphones have become an integral tool in the daily life of healthcare professionals (Franko 2011). Their ease of use and wide availability often make smartphones the first tool surgeons use to perform measurements. This technique has been validated for certain orthopaedic pathologies (Shaw 2012, Quek 2014, Milanese 2014, Milani 2014), but never to assess sagittal parameters in adult spinal deformity. This study was designed to assess the validity, reproducibility, precision and efficiency of using a smartphone protractor application to measure sagittal parameters commonly measured in adult spinal deformity assessment and surgical planning...
August 14, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28774580/advancing-imaging-technologies-for-patients-with-spinal-pain-with-a-focus-on-whiplash-injury
#14
James M Elliott, Mark J Hancock, Rebecca J Crawford, Andrew C Smith, David M Walton
BACKGROUND CONTEXT: Radiological observations of soft-tissue changes that may relate to clinical symptoms in patients with traumatic and non-traumatic spinal disorders are highly controversial. Studies are often of poor quality and findings inconsistent. A plethora of evidence suggests some pathoanatomical findings from traditional imaging applications are common in asymptomatic participants across the life span, which further questions the diagnostic, prognostic, and theranostic value of traditional imaging...
July 31, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28757287/sagittal-lumbo-pelvic-alignment-in-patients-with-low-back-pain-and-the-effects-of-a-high-load-lifting-exercise-and-individualized-low-load-motor-control-exercises-a-randomized-controlled-trial
#15
Lars Berglund, Björn Aasa, Peter Michaelson, Ulrika Aasa
Background Context Assessment of posture and lumbo-pelvic alignment is often a main focus in the classification and treatment of patients with low back pain. However, little is known regarding the effects of motor control interventions on objective measures of lumbo-pelvic alignment. Purpose The primary aim of this study was to describe the variation of sagittal lumbo-pelvic alignment in patients with nociceptive mechanical low back pain. The secondary aim was to compare the effects of a high-load lifting exercise (HLL) and low-load motor control exercises (LMC) on change in lumbo-pelvic alignment with a special emphasis on patients with high and low degrees of lumbar lordosis (lu) and sacral angle (sa)...
July 28, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28756302/both-positive-and-negative-beliefs-are-important-in-patients-with-spine-pain-findings-from-the-oioc-registry
#16
Maria M Wertli, Ulrike Held, Angela Lis, Marco Campello, Sherri Weiser
BACKGROUND CONTEXT: Negative beliefs are known to influence treatment outcome in patients with spine pain (SP). The impact of positive beliefs is less clear. PURPOSE: Assess the influence of positive and negative beliefs on baseline and treatment responses in patients with SP. STUDY DESIGN/SETTING: Retrospective cross-sectional and longitudinal analysis of prospectively collected data of outpatient physical therapy patients with SP. Questionnaires administered before and during treatment included the STarT Back distress scale (negative beliefs), and expectation and self-efficacy questions (positive beliefs)...
July 26, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28756301/effectiveness-of-psychological-interventions-delivered-by-non-psychologists-on-low-back-pain-and-disability-a-qualitative-systematic-review
#17
REVIEW
Geoff P Bostick
BACKGROUND CONTEXT: Psychological treatments delivered by non-psychologists have been proposed as a way to increase access to care to address important psychological barriers to recovery in people with low back pain (LBP). PURPOSE: Synthesize randomized controlled trials (RCTs) that assess the effectiveness of psychological interventions delivered by non-psychologists in reducing pain intensity and disability in adults with LBP, compared to usual care. STUDY DESIGN: Systematic review without meta-analysis METHODS: RCTs including adult patients with all types of musculoskeletal LBP were eligible...
July 26, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28756300/obesity-and-spinal-epidural-lipomatosis-in-cauda-equina-syndrome
#18
Duncan Cushnie, Jennifer C Urquhart, Kevin R Gurr, Fawaz Siddiqi, Christopher S Bailey
BACKGROUND CONTEXT: Although lumbar disc herniations are common, only a small portion of these herniations lead to cauda equina syndrome (CES) which is an uncommon but debilitating disorder. Why some patients with herniation develop CES, when most do not, remains unknown. Pre-existing subclinical epidural lipomatosis may limit canal space such that an otherwise benign herniation causes CES. PURPOSE: This study determines whether patients with an acute disc herniation and CES have a greater body mass index (BMI) and greater quantity of epidural fat compared to control subjects with non-CES symptomatic lumbar herniated discs...
July 26, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28756299/is-the-size-and-composition-of-the-paraspinal-muscles-associated-with-low-back-pain-a-systematic-review
#19
REVIEW
Tom A Ranger, Flavia M Cicuttini, Tue Secher Jensen, Waruna L Peiris, Sultana Monira Hussain, Jessica Fairley, Donna M Urquhart
Background Context Although previous studies have investigated the association between paraspinal muscle morphology and low back pain (LBP), the results are conflicting. Purpose This systematic review examined the relationship between size and composition of the paraspinal muscles and LBP. Study design/ setting: Systematic review Patient sample: N/A Outcome measures: N/A Methods A systematic search of electronic databases was conducted to identify studies investigating the association between the cross-sectional area and/or fatty infiltration of the paraspinal muscles (erector spinae, multifidus, psoas and quadratus lumborum) and LBP...
July 26, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28751242/evaluation-of-a-peek-titanium-composite-interbody-spacer-in-an-ovine-lumbar-interbody-fusion-model-a-biomechanical-micro-computed-tomography-and-histologic-analyses
#20
Kirk C McGilvray, Erik I Waldorff, Jeremiah Easley, Howard B Seim, Nianli Zhang, Raymond J Linovitz, James T Ryaby, Christian M Puttlitz
BACKGROUND CONTEXT: The most commonly used materials used for interbody cages are titanium metal and polymer polyetheretherketone (PEEK). Both of these materials have demonstrated good biocompatibility. A major disadvantage associated with solid titanium cages is their radiopacity, limiting post-operative monitoring of spinal fusion via standard imaging modalities. However, PEEK is radiolucent, allowing for temporal assessment of the fusion mass by clinicians. On the other hand, PEEK is hydrophobic, which can limit bony in-growth...
July 24, 2017: Spine Journal: Official Journal of the North American Spine Society
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