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Spine

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https://www.readbyqxmd.com/read/28306642/damage-identification-on-vertebral-bodies-during-compressive-loading-using-digital-image-correlation
#1
Hannah M Gustafson, Angela D Melnyk, Gunter P Siegmund, Peter A Cripton
STUDY DESIGN: Ex vivo compression experiments on isolated cadaveric vertebrae OBJECTIVE.: To qualitatively compare the fracture locations identified in video analysis with the locations of high compressive strain measured with DIC on vertebral bodies and to evaluate the timing of local damage to the cortical shell relative to the global yield force SUMMARY OF BACKGROUND DATA.: In previous ex vivo experiments, cortical bone fracture has been identified using various methods including acoustic emission sensors, strain gages, video analysis, or force signals...
March 16, 2017: Spine
https://www.readbyqxmd.com/read/28306641/a-kinematic-symmetry-index-of-gait-pattern-between-older-adults-with-and-without-low-back-pain
#2
Paul S Sung, Pamela Danial
STUDY DESIGN: Cross-sectional study. OBJECTIVE: To investigate the symmetry index for limb support patterns in right limb dominant older adults with and without low back pain (LBP). SUMMARY OF BACKGROUND DATA: The effects of bilateral asymmetry on gait performance were reported; however, there is a lack of understanding on kinematic symmetry to assess subjects with LBP. This asymmetry might be related to increased compensatory patterns to the dominant side in subjects with LBP...
March 16, 2017: Spine
https://www.readbyqxmd.com/read/28306640/cervical-alignment-variations-in-different-postures-and-predictors-of-normal-cervical-kyphosis-a-new-understanding
#3
Hwee Weng Dennis Hey, Eugene Tze-Chun Lau, Chengyuan Gordon Wong, Kimberly-Anne Tan, Gabriel Ka-Po Liu, Hee-Kit Wong
STUDY DESIGN: Prospective comparative study OBJECTIVE.: To predict physiological alignment of the cervical spine and study its morphology in different postures. SUMMARY OF BACKGROUND DATA: There is increasing evidence that normal cervical spinal alignment may vary from lordosis to neutral to kyphosis, or form S-shaped or reverse S-shaped curves. METHODS: Standing, erect sitting and natural sitting whole spine radiographs were obtained from 26 consecutive patients without cervical spine pathology...
March 16, 2017: Spine
https://www.readbyqxmd.com/read/28306639/defining-the-role-of-the-lower-limbs-in-compensating-for-sagittal-malalignment
#4
Renaud Lafage, Barthelemy Liabaud, Bassel G Diebo, Jonathan H Oren, Shaleen Vira, Sébastien Pesenti, Themistocles S Protopsaltis, Thomas J Errico, Frank J Schwab, Virginie Lafage
STUDY DESIGN: Retrospective review OBJECTIVE.: Investigate the role of lower limbs compensation with progressive sagittal malalignment SUMMARY OF BACKGROUND DATA.: While lower limb compensatory mechanisms are an established response to progressive sagittal malalignment, their specific role and potential impact on surgical planning has not been evaluated. METHODS: Single center retrospective review of full body xrays was performed in patients >20 yrs. Parameters were measured with dedicated software...
March 16, 2017: Spine
https://www.readbyqxmd.com/read/28306638/the-proinflammatory-cytokines-il-1%C3%A3-and-tnf-%C3%AE-influence-human-annulus-cell-signaling-cues-for-neurite-growth-in-vitro-co-culture-studies
#5
Helen E Gruber, Brittany Jones, Emilio Marrero, Edward N Hanley
STUDY DESIGN: IRB-approved research using human annulus cells co-cultured with F11 nerve cells. OBJECTIVE: To perform functional, kinetic assays of neurite dynamics and media neurotrophin measurement to test whether proinflammatory cytokines influence annulus cells' signaling cues for neurite growth/repulsion. SUMMARY OF BACKGROUND DATA: Nerves grow in response to signaling molecules called neurotrophins which disc cells produce (e.g. brain-derived neurotrophic factor (BDNF), glial cell-line derived neurotrophic factor (GDNF) and neurotrophin 3 (NT3)) and which influence neuron survival, differentiation and migration...
March 16, 2017: Spine
https://www.readbyqxmd.com/read/28296816/low-dose-radiation-3d-intraoperative-imaging-how-low-can-we-go-an-o-arm-%C3%A2-ct-scan-cadaveric-study
#6
Vishal Sarwahi, Monica Payares, Stephen Wendolowski, Beverly Thornhill, Yungtai Lo, Terry D Amaral
STUDY DESIGN: Cadaveric study OBJECTIVE.: The objective was to evaluate O-Arm®'s ability at low dose settings to assess intraoperative screw placement. SUMMARY OF BACKGROUND DATA: Accurate placement of pedicle screws is crucial because of proximity to vital structures. Malposition of screws may result in significant morbidity and potential mortality. O-arm® provides real-time, intra-op imaging of patient's anatomy and provides higher accuracy in scoliosis surgeries, avoiding risk to vital structures...
March 14, 2017: Spine
https://www.readbyqxmd.com/read/28296815/anterior-trunk-mobility-does-not-predict-disability-in-elderly-women-with-acute-low-back-pain-brazilian-back-complaints-in-the-elders-bace-brazil-study-results
#7
Diogo Carvalho Felicio, Daniele Sirineu Pereira, Juliano Bergamaschine Mata Diz, Barbara Zille de Queiroz, Juscelio Pereira da Silva, Amanda Aparecida Oliveira Leopoldino, Leani Souza Maximo Pereira
STUDY DESIGN: Cross-sectional, ancillary study of an international multicenter epidemiological study. OBJECTIVE: To investigate the relationship of the anterior trunk mobility with self-report and physical performance measures in elderly women with acute low back pain (LBP). SUMMARY OF BACKGROUND DATA: LBP is one of the most prevalent pain complaints in the elderly population. It is postulated that the increased range of motion (ROM) of limited joints of the trunk may improve LBP and functionality of patients...
March 14, 2017: Spine
https://www.readbyqxmd.com/read/28296814/pedicle-screw-safety-how-much-anterior-breach-is-safe-a-cadaveric-and-ct-based-study
#8
Vishal Sarwahi, Monica Payares, Rachel Gecelter, Stephen Wendolowski, Kathleen Maguire, Dan Wang, Beverly Thornhill, Terry Amaral
STUDY DESIGN: Clinical retrospective chart review and basic science study OBJECTIVES.: To determine the safety limits of an anterior/anterorolateral misplaced pedicle screw on CT scan in spinal deformity. SUMMARY OF BACKGROUND DATA: While the limits of medial breaches (<4 mm) are known, the safe limits for anterior/anterolateral breaches in spine deformity are not yet defined. METHODS: This study had two parts. In part I, post-operative CT scans of 165 patients operated on for spine deformity were reviewed for screw misplacement (2800 screws)...
March 14, 2017: Spine
https://www.readbyqxmd.com/read/28296813/comparison-of-outcomes-between-c1-c2-screw-hook-fixation-and-c1-c2-screw-rod-fixation-for-treating-reducible-atlantoaxial-dislocation
#9
Bin Ni, Wenlong Zhao, Qunfeng Guo, Mei Zhang, Jinshui Chen, Xiang Guo, Xuhua Lu, Ning Xie
STUDY DESIGN: Retrospective comparative study OBJECTIVE.: To compare the outcomes of C1-C2 transarticular screw with C1 laminar hook (TAS+ C1H) fixation and C1 trans-arch lateral mass screw with C2 pedicle screw (C1TLMS+ C2PS) fixation in the treatment of reducible atlantoaxial dislocation(AAD). SUMMARY OF BACKGROUND DATA: TAS+ C1H is comparable to TAS with posterior wiring techniques and superior to C1 lateral mass screw combined with C2 pedicle screw (C1LMS+ C2PS) in biomechanics...
March 14, 2017: Spine
https://www.readbyqxmd.com/read/28296812/pedicled-vascularized-clavicular-graft-for-anterior-cervical-arthrodesis-cadaveric-feasibility-study-technique-description-and-case-report
#10
Michael A Bohl, Michael A Mooney, Joshua S Catapano, Kaith K Almefty, Mark C Preul, Steve W Chang, U Kumar Kakarla, Edward M Reece, Jay D Turner, Randall W Porter
STUDY DESIGN: Cadaveric feasibility study. OBJECTIVES: To assess the anatomic and technical feasibility of rotating a clavicular segment on a sternocleidomastoid muscle (SCM) pedicle into the ventral cervical spine using a cadaveric model and to provide the first clinical case description of performing this procedure. SUMMARY OF BACKGROUND DATA: Reconstruction of the anterior cervical spine in patients with a high risk of pseudoarthrosis may require the use of a vascularized bone graft (VBG)...
March 14, 2017: Spine
https://www.readbyqxmd.com/read/28277386/principal-radiographic-characteristics-for-cervical-spinal-deformity-a-health-related-quality-of-life-analysis
#11
Hongda Bao, Jeffrey Varghese, Renaud Lafage, Barthelemy Liabaud, Bassel Diebo, Subaraman Ramchandran, Louis Day, Cyrus Jalai, Dana Cruz, Thomas Errico, Themistocles Protopsaltis, Peter Passias, Aaron Buckland, Yong Qiu, Frank Schwab, Virginie Lafage
STUDY DESIGN: Retrospective study OBJECTIVE:: To propose radiographic characteristics of patients with cervical disability and to investigate the relevant parameters when assessing cervical alignment. SUMMARY OF BACKGROUND DATA: Although cervical kyphosis is traditionally recognized as presentation of cervical deformity, an increasing number of studies demonstrated that cervical kyphosis may not equal cervical deformity. Therefore, several other differentiating criteria for cervical deformity should be investigated and supported with quality of life scores...
March 8, 2017: Spine
https://www.readbyqxmd.com/read/28277385/transforaminal-lumbar-interbody-fusion-versus-mini-open-anterior-lumbar-interbody-fusion-with-oblique-self-anchored-stand-alone-cages-for-the-treatment-of-lumbar-disc-herniation-a-retrospective-study-with-2-year-follow-up
#12
Guohua Lü, Lei Kuang, Bing Wang
STUDY DESIGN: Retrospective study OBJECTIVE.: To evaluate the clinical and radiological outcomes of mini-open ALIF (MO-ALIF) with self-anchored stand alone cages for the treatment of lumbar disc herniation in comparison with transforaminal lumbar interbody fusion (TLIF). SUMMARY OF BACKGROUND DATA: Currently, whether ALIF is superior to TLIF for the treatment of lumbar disc herniation remains controversial. METHODS: This study retrospectively reviewed 82 patients who underwent MO-ALIF with self-anchored standalone cages (n = 42) or TLIF (n = 40) for the treatment of lumbar disc herniation between April 2013 and October 2014...
March 8, 2017: Spine
https://www.readbyqxmd.com/read/28277384/key-vertebral-pedicle-screw-strategy-for-the-correction-of-flexible-lenke-type-1-adolescent-idiopathic-scoliosis-a-preliminary-study-of-a-5-year-minimum-radiographic-follow-up
#13
Fei Wang, Xiao-Yi Zhou, Yi-Lin Yang, Xi-Ming Xu, Jing-Feng Li, Yu-Shu Bai, Xiao-Dong Zhu, Ming Li, Xian-Zhao Wei
STUDY DESIGN: A retrospective clinical and radiographic study. OBJECTIVE: To evaluate outcomes of the key vertebral pedicle screw strategy (KVPSS) for the correction of flexible Lenke type 1 adolescent idiopathic scoliosis (AIS) with a minimum follow-up of 5 years. SUMMARY OF BACKGROUND DATA: The KVPSS has been described as an alternative screw placement strategy for surgically treating the main thoracic curve in AIS patients. However, there have been no long-term, three-dimensional correction studies of selective thoracic fusion using the KVPSS in Lenke type 1AIS...
March 8, 2017: Spine
https://www.readbyqxmd.com/read/28267053/reliability-and-validity-of-the-pain-anxiety-symptom-scale-in-persian-speaking-chronic-low-back-pain-patients
#14
Sanaz Shanbehzadeh, Mahyar Salavati, Mahnaz Tavahomi, Ali Khatibi, Saeed Talebian Moghadam, Khosro Khademi-Kalantari
STUDY DESIGN: Psychometric testing of the Persian version of Pain Anxiety Symptom Scale 20 OBJECTIVE.: To assess the reliability and construct validity of the PASS-20 in nonspecific chronic Low back pain (LBP) patients. SUMMARY OF BACKGROUND DATA: The PASS-20 is a self-report questionnaire that assess pain related anxiety. The Psychometric properties of this instrument has not been assessed in Persian speaking chronic LBP patients. METHODS: One hundred and sixty participants with chronic LBP completed the Persian version of PASS-20, Tampa Scale of Kinesiophobia (TSK), Fear-Avoidance Beliefs Questionnaire (FABQ), Pain Catastrophizing Scale (PCS), trait form of the State-Trait Anxiety (STAI-T), Oswestry Low Back Pain Disability Index (ODI), Beck Depression Inventory (BDI-II) and Visual Analogue Scale (VAS)...
March 6, 2017: Spine
https://www.readbyqxmd.com/read/28263228/pain-is-the-greatest-preoperative-concern-for-patients-and-parents-prior-to-posterior-spinal-fusion-for-adolescent-idiopathic-scoliosis
#15
Priscella Chan, David Skaggs, Austin Sanders, Gabriela A Villamor, Paul D Choi, Vernon Tolo, Lindsay M Andras
STUDY DESIGN: Prospective cross-sectional study OBJECTIVE.: To evaluate patients' and parents' concerns so they can be addressed with appropriate preoperative counseling. SUMMARY OF BACKGROUND DATA: Despite much research on outcomes for posterior spinal fusion (PSF) in adolescent idiopathic scoliosis (AIS), little is available about preoperative fears or concerns. METHODS: AIS patients undergoing PSF, their parents, and surgeons, were prospectively enrolled and asked to complete a survey on their fears and concerns about surgery at their preoperative appointment...
March 3, 2017: Spine
https://www.readbyqxmd.com/read/28263227/who-benefits-most-from-individualized-physiotherapy-or-advice-for-low-back-disorders-a-pre-planned-effect-modifier-analysis-of-a-randomized-controlled-trial
#16
Andrew J Hahne, Jon J Ford, Matthew C Richards, Luke D Surkitt, Alexander Yp Chan, Sarah L Slater, Nicholas F Taylor
STUDY DESIGN: A pre-planned effect modifier analysis of the Specific Treatment of Problems of the Spine (STOPS) randomized controlled trial. OBJECTIVE: To identify characteristics associated with larger or smaller treatment effects in people with low back disorders undergoing either individualized physical therapy or guideline-based advice. SUMMARY OF BACKGROUND DATA: Identifying subgroups of people who attain a larger or smaller benefit from particular treatments has been identified as a high research priority for low back disorders...
March 3, 2017: Spine
https://www.readbyqxmd.com/read/28263226/age-adjusted-alignment-goals-have-the-potential-to-reduce-pjk
#17
Renaud Lafage, Frank Schwab, Steve Glassman, Shay Bess, Bradley Harris, Justin Sheer, Robert Hart, Breton Line, Jensen Henry, Doug Burton, HanJo Kim, Eric Klineberg, Christopher Ames, Virginie Lafage
STUDY DESIGN: Retrospective cohort OBJECTIVE.: To explore proximal junctional kyphosis(PJK) as a function of age-adjusted surgical correction goals. SUMMARY OF BACKGROUND DATA: Recent adult spinal deformity(ASD) studies show that alignment targets are age-specific. Despite recognizing age and malalignment as PJK risk factors, no study has assessed the age-specific effects of alignment on PJK. METHODS: ASD patients with fusions to the pelvis were included and stratified into three groups: young adults(YA<40yo), middle aged(MA: 40-65yo), the elderly(ED>65yo)...
March 3, 2017: Spine
https://www.readbyqxmd.com/read/28263225/predictors-of-long-term-opioid-use-following-lumbar-fusion-surgery
#18
Joseph Connolly, Zulqarnain Javed, Mukaila A Raji, Winston Chan, Yong-Fang Kuo, Jacques Baillargeon
STUDY DESIGN: A population-based retrospective cohort study. OBJECTIVE: The aim of this study was to examine risk factors for long-term opioid use following lumbar spinal fusion surgery in a nationally representative cohort of commercially insured adults. SUMMARY OF BACKGROUND DATA: Opioid prescription rates for the management of low back pain have more than doubled in the US over the past decade. Although opioids are commonly used for the management of pain following lumbar spinal fusion surgery, to date, no large-scale nationally representative studies have examined the risk factors for long-term opioid use following such surgical intervention...
March 3, 2017: Spine
https://www.readbyqxmd.com/read/28252557/complications-associated-with-lateral-interbody-fusion-nationwide-survey-of-2998-cases-during-the-first-two-years-of-its-use-in-japan
#19
Shunsuke Fujibayashi, Noriaki Kawakami, Takashi Asazuma, Manabu Ito, Jun Mizutani, Hideki Nagashima, Masaya Nakamura, Koichi Sairyo, Ryuichi Takemasa, Motoki Iwasaki
STUDY DESIGN: Retrospective nationwide questionnaire-based survey of complications. OBJECTIVE: To elucidate the incidence of complications and risk factors associated with lateral interbody fusion (LIF). SUMMARY OF BACKGROUND DATA: After its introduction to Japan in February 2013, the numbers of LIF cases have increased substantially because of the advantages of this minimally invasive procedure. However, LIF has the potential risk of several complications unique to the procedure...
March 1, 2017: Spine
https://www.readbyqxmd.com/read/28252556/predictors-for-patient-discharge-destination-following-elective-anterior-cervical-discectomy-and-fusion
#20
John Di Capua, Sulaiman Somani, Jun S Kim, Nathan J Lee, Parth Kothari, Kevin Phan, Nahyr Lugo-Fagundo, Samuel K Cho
STUDY DESIGN: Retrospective study of prospectively collected data. OBJECTIVE: To identify risk factors for non-home patient discharge following elective anterior cervical discectomy and fusion (ACDF). SUMMARY OF BACKGROUND DATA: ACDF is one of the most performed spinal procedures and this is expected to increase in the coming years. In order to effectively deal with an increasing patient volume, identifying variables associated with patient discharge destination can expedite placement applications and subsequently reduce hospital length of stay...
March 1, 2017: Spine
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