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Spine

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https://www.readbyqxmd.com/read/28632647/high-osteogenic-potential-of-adipose-and-muscle-derived-mesenchymal-stem-cells-in-spinal-ossification-model-mice
#1
Xizhe Liu, Gentaro Kumagai, Kanichiro Wada, Toshihiro Tanaka, Toru Asari, Kazuki Oishi, Taku Fujita, Hiroki Mizukami, Ken-Ichi Furukawa, Yasuyuki Ishibashi
STUDY DESIGN: Basic experiments in a mouse model of ossification of the posterior longitudinal ligament (OPLL). OBJECTIVE: To assess the osteogenic potential of mesenchymal stem cells (MSCs) obtained from muscle and adipose tissue in Tiptoe-walking (ttw) mice, in which cervical OPLL compresses the spinal cord and causes motor and sensory dysfunction. SUMMARY OF BACKGROUND DATA: In humans, MSCs have been implicated in the pathogenesis of cervical OPLL...
June 19, 2017: Spine
https://www.readbyqxmd.com/read/28632646/the-utility-of-adding-magnetic-resonance-imaging-to-computed-tomography-alone-in-the-evaluation-of-cervical-spine-injury-a-propensity-matched-analysis
#2
Andrew J Schoenfeld, Daniel G Tobert, Hai V Le, Dana A Leonard, Allan L Yau, Prashant Rajan, Charles H Cho, James D Kang, Christopher M Bono, Mitchel B Harris
STUDY DESIGN: Adult patients who received CT alone or CT-MRI for the evaluation of cervical OBJECTIVE.: To evaluate the utility of CT-MRI in the diagnosis of cervical spine injury using propensity matched techniques. SUMMARY OF BACKGROUND DATA: The optimal evaluation (computed tomography [CT] alone vs CT and magnetic resonance imaging [MRI]) for patients with suspected cervical spine injury in the setting of blunt trauma remains controversial. METHODS: The primary outcome was the identification of a cervical spine injury, with decision for surgery and change in management considered secondarily...
June 19, 2017: Spine
https://www.readbyqxmd.com/read/28632645/management-of-symptomatic-lumbar-disk-herniation-an-international-perspective
#3
Pravesh S Gadjradj, Mark P Arts, Maurits W van Tulder, Wim J R Rietdijk, Wilco C Peul, Biswadjiet S Harhangi
STUDY DESIGN: A questionnaire survey. OBJECTIVE: To evaluate the current practice patterns of surgeons regarding both the surgical and nonsurgical management of lumbar disk herniation (LDH) worldwide and to compare this with the current literature. SUMMARY OF BACKGROUND DATA: Sciatica is a common diagnosis in the general population. Sciatica is most frequently caused by LDH. Multiple surgical techniques and treatment modalities are available to treat LDH, albeit some with small effect sizes or without compelling evidence...
June 19, 2017: Spine
https://www.readbyqxmd.com/read/28632644/do-former-smokers-exhibit-a-distinct-profile-before-and-after-lumbar-spine-surgery
#4
Ehsan Jazini, Steven D Glassman, Erica F Bisson, Eric A Potts, Leah Y Carreon
STUDY DESIGN: Retrospective longitudinal cohort OBJECTIVES.: To determine if former smokers undergoing lumbar spine surgery have distinct baseline and post-operative Patient Reported Outcomes (PROs) compared to never smokers and current smokers SUMMARY OF BACKGROUND DATA.: Smoking has known deleterious effects on patients undergoing lumbar spine surgery. However, former smokers have not been extensively evaluated. There are few studies regarding the relationship between pack-years or duration of smoking cessation, and subsequent clinical outcome...
June 19, 2017: Spine
https://www.readbyqxmd.com/read/28632643/the-early-impact-of-postoperative-bracing-on-pain-and-quality-of-life-following-posterior-instrumented-fusion-for-lumbar-degenerative-conditions-a-randomized-trial
#5
Hany Ag Soliman, Soraya Barchi, Stefan Parent, Gilles Maurais, Alain Jodoin, Jean-Marc Mac-Thiong
STUDY DESIGN: A randomized controlled trial. OBJECTIVE: To investigate if bracing after posterior spinal instrumented fusion(PSIF) can improve pain relief and quality of life(QoL) 6 weeks and 3 months postoperatively. SUMMARY OF BACKGROUND DATA: Braces are commonly prescribed after PSIF in patients with lumbar degenerative conditions with the aim of improving pain relief and QoL. However, there is a lack of evidence on the indication for postoperative bracing, as surgeons use braces mainly based on their experience and training...
June 19, 2017: Spine
https://www.readbyqxmd.com/read/28614282/clinical-outcomes-of-cervical-spinal-surgery-for-cervical-myelopathic-patients-with-coexisting-lumbar-spinal-canal-stenosis-tandem-spinal-stenosis-a-retrospective-analysis-of-297-cases
#6
Tsuyoshi Yamada, Toshitaka Yoshii, Naoki Yamamoto, Takashi Hirai, Hiroyuki Inose, Tsuyoshi Kato, Shigenori Kawabata, Atsushi Okawa
STUDY DESIGN: Retrospective observational study. OBJECTIVE: We evaluated the prevalence and clinical characteristics of tandem spinal stenosis (TSS) in patients with cervical myelopathy including ossification of the posterior longitudinal ligament of the cervical spine (C-OPLL). SUMMARY OF BACKGROUND DATA: Concurrent cervical and lumbar spinal canal stenosis is generally reported as TSS. Most previous studies have used magnetic resonance imaging to evaluate spinal stenosis in the cervical and lumbar spine...
June 13, 2017: Spine
https://www.readbyqxmd.com/read/28614281/transcranial-motor-evoked-potential-alarm-criteria-to-predict-foot-drop-injury-during-lumbosacral-surgery
#7
Arvydas Tamkus, Kent S Rice, Gregory Hoffman
STUDY DESIGN: Retrospective cohort analysis. OBJECTIVE: This study aims to investigate whether waveform alterations in transcranial motor evoked potentials (TCMEP) can reliably predict postoperative foot drop. SUMMARY OF BACKGROUND DATA: Nerve injury leading to foot drop is a potential complication of lumbosacral surgery. Very limited data exist on the use of intraoperative TcMEPs to identify iatrogenic foot drop. METHODS: We retrospectively reviewed neuromonitoring data from 130 consecutive spine surgeries with instrumentation involving L4-S1...
June 13, 2017: Spine
https://www.readbyqxmd.com/read/28614280/psychometric-validation-of-the-adapted-traditional-chinese-hong-kong-version-of-the-japanese-orthopaedic-association-cervical-myelopathy-evaluation-questionnaire-joacmeq
#8
Prudence Wing Hang Cheung, Carlos King Ho Wong, Sin Ting Lau, Jason Pui Yin Cheung
STUDY DESIGN: Prospective questionnaire translation and validation. OBJECTIVE: To translate and cross-culturally adapt the Japanese Orthopaedic Association Cervical Myelopathy Evaluation Questionnaire (JOACMEQ) into Traditional Chinese (Hong Kong); and to assess its validity, reliability and sensitivity for differentiating cervical myelopathy (CM) and presence of acute neck/shoulder pain. SUMMARY OF BACKGROUND DATA: CM frequently presents with various symptoms affecting patients' quality of life...
June 13, 2017: Spine
https://www.readbyqxmd.com/read/28614279/reoperation-rates-following-instrumented-lumbar-spine-fusion
#9
Tero Matti Irmola, Arja Häkkinen, Salme Järvenpää, Ilkka Marttinen, Kimmo Vihtonen, Marko Neva
STUDY DESIGN: OBJECTIVE.: This study evaluated the cumulativereoperation rate and indications for reoperation following instrumented lumbar spine fusion (LSF). SUMMARY OF BACKGROUND DATA: LSF reduces disability and improves health-related quality of life for patients with several spinal disorders. The rate of instrumented LSF has drastically increased over the last few decades.The increased incidence of LSF, however, has led to increased reoperation rates. METHODS: The data are based on the prospective LSF database of Tampere University Hospital that includes all elective indications for LSF surgery...
June 13, 2017: Spine
https://www.readbyqxmd.com/read/28614278/patient-specific-distraction-regimen-to-avoid-growth-rod-failure
#10
Aakash Agarwal, Arvind Jayaswal, Anand K Agarwal, Vijay K Goel
STUDY DESIGN: A finite element study to establish the relationship between patient's curve flexibility (determined using curve correction under gravity) in juvenile idiopathic scoliosis and the required distraction frequency to avoid growth rod fracture, as a function of time. OBJECTIVE: To perform a parametric analysis using a juvenile scoliotic spine model (single mid-thoracic curve with the apex at the eighth thoracic vertebra) and establish the relationship between curve flexibility (determined using curve correction under gravity) and the distraction interval that allows a higher factor of safety for the growth rods...
June 13, 2017: Spine
https://www.readbyqxmd.com/read/28604497/potential-mechanism-for-some-post-operative-c5-palsies-an-anatomical-study
#11
Fernando Alonso, Vlad Voin, Joe Iwanaga, David Hanscom, Jens R Chapman, Rod J Oskouian, Marios Loukas, R Shane Tubbs
STUDY DESIGN: Anatomical Study. OBJECTIVE: Determine if shoulder depression (e.g., taping the shoulders) might result in C5 nerve traction and subsequent injury. SUMMARY OF BACKGROUND DATA: Postoperative C5 nerve palsy is a recognized entity that is still often enigmatic. Inferior shoulder depression is usually employed to assist with surgical visualization during cervical spine procedures. METHODS: In the supine position, ten adult fresh frozen human cadavers underwent dissection of the spinal cord and its adjacent dorsal, ventral roots and spinal nerves from C4 to T1...
June 9, 2017: Spine
https://www.readbyqxmd.com/read/28604496/a-replication-study-for-association-of-lbx1-locus-with-adolescent-idiopathic-scoliosis-in-french-canadian-population
#12
Dina Nada, Cédric Julien, Mark E Samuels, Alain Moreau
STUDY DESIGN: A case-control association study. OBJECTIVES: To investigate the relationship between LBX1 polymorphisms and Adolescent Idiopathic Scoliosis (AIS) in French-Canadian population. SUMMARY OF BACKGROUND DATA: It is widely accepted that genetic factors contribute to AIS. Although the LBX1 locus is so far the most successfully replicated locus in different AIS cohorts, these associations were replicated mainly in Asian populations, with few studies in Caucasian populations of European descent...
June 9, 2017: Spine
https://www.readbyqxmd.com/read/28604495/when-do-patients-return-to-physical-activities-and-athletics-after-scoliosis-surgery-a-validated-patient-questionnaire-based-study
#13
Vishal Sarwahi, Stephen Wendolowski, Rachel Gecelter, Kathleen Maguire, Melanie Gambassi, Dana Orlando, Yungtai Lo, Terry Amaral
STUDY DESIGN: A retrospective chart review with a survey OBJECTIVES.: This study seeks to determine time of return to normal, physical and athletic activities and delaying factors after all pedicle screw fixation. SUMMARY OF BACKGROUND DATA: Return to athletic activity after PSF in AIS is largely dependent on surgeon's philosophy. Some allow contact and collision sports by 6 and 12 months, while others avoid contact sports for 1 year and never allow collision sports...
June 9, 2017: Spine
https://www.readbyqxmd.com/read/28604494/risk-factors-for-and-complications-after-surgical-delay-in-elective-single-level-lumbar-fusion
#14
Scott C Wagner, Joseph S Butler, Ian D Kaye, Arjun Sebastian, Patrick B Morrissey, Christopher Kepler
STUDY DESIGN: Retrospective cohort Objective: To assess the incidence of and risk factors for delay of elective lumbar fusion surgery, as well as medical and surgical complications associated with surgical delay. SUMMARY OF BACKGROUND DATA: Lumbar fusion is a well-established treatment for patients with degenerative spondylolisthesis with stenosis who have failed conservative management. Rarely, patients admitted for elective lumbar fusion may experience a delay in surgery past the day of admission...
June 9, 2017: Spine
https://www.readbyqxmd.com/read/28604493/further-standardization-in-the-aneurysm-clip-the-effects-of-occlusal-depth-on-the-outcome-of-spinal-cord-injury-in-rats
#15
Hui Rong, Yue Liu, Zhibin Zhao, Jiying Feng, Rao Sun, Zhengliang Ma, Xiaoping Gu
STUDY DESIGN: Experimental study. OBJECTIVE: To evaluate the relationship between clip occlusal depth and functional and histological outcome measures in a rat model of thoracic spinal cord injury (SCI). SUMMARY OF BACKGROUND DATA: Aneurysm clip compression is a proven model of contusion-compression SCI, but the relationship between clip depth and outcomes in thoracic SCI is unknown. METHODS: A single aneurysm clip was applied to the spinal cord at thoracic vertebra 10 for 1 minute with an occlusal depth of 2, 6, or 10 mm...
June 9, 2017: Spine
https://www.readbyqxmd.com/read/28604492/a-microstructural-investigation-of-disc-disruption-induced-by-low-frequency-cyclic-loading
#16
Meredith L Schollum, Kelly R Wade, Peter A Robertson, Ashvin Thambyah, Neil D Broom
STUDY DESIGN: Microstructural investigation of low frequency cyclic loading and flexing of the lumbar disc. OBJECTIVE: To explore micro-level structural damage in motion segments subjected to low frequency repetitive loading and flexing at sub-acute loads. SUMMARY OF BACKGROUND DATA: Cumulative exposure to mechanical load has been implicated in low back pain and injury. The mechanical pathways by which cyclic loading physically affects spine tissues remain unclear, in part due to the absence of high quality microstructural evidence...
June 9, 2017: Spine
https://www.readbyqxmd.com/read/28604491/spinal-flexibility-assessment-on-the-patients-with-adolescent-idiopathic-scoliosis-ais-a-literature-review
#17
Chen He, Man-Sang Wong
STUDY DESIGN: Literature review OBJECTIVE.: To review the contemporary methods for spinal flexibility assessment on the patients with adolescent idiopathic scoliosis (AIS). SUMMARY OF BACKGROUND DATA: Spinal flexibility is one of the essential parameters for clinical decisions on the patients with AIS. Various methods of spinal flexibility assessment are proposed, but which method(s) could better reveal spinal flexibility or predict treatment effect is unclear. METHODS: The databases of AbleData, IBSS, Academic Search Premier, MEDLINE/PubMed, CINAHL, Recal Legacy, REHABDATA, Embase and Web of Science were searched...
June 9, 2017: Spine
https://www.readbyqxmd.com/read/28604490/health-related-quality-of-life-in-early-onset-scoliosis-patients-treated-surgically-eosq-scores-in-traditional-growing-rod-vs-magnetically-controlled-growing-rods
#18
Michael E Doany, Z Deniz Olgun, Gizem Irem Kinikli, Senol Bekmez, Aykut Kocyigit, Gokhan Demirkiran, A Ergun Karaagaoglu, Muharrem Yazici
STUDY DESIGN: Cross-sectional study. OBJECTIVE: To compare quality of life and caregiver burden in TGR and MCGR patients. SUMMARY OF BACKGROUND DATA: Magnetic controlled growing rods (MCGR) decrease surgical sessions associated with treatment of early onset scoliosis (EOS), hoping to minimize the burdens seen with repetitive invasive surgeries in traditional growing rod (TGR) treatment. Although the clinical indications for these treatments have largely been agreed upon, there is a lack of understanding of their impact on patients' and families' quality of life...
June 9, 2017: Spine
https://www.readbyqxmd.com/read/28604489/risk-factors-and-prognosis-for-acute-progression-of-myelopathic-symptoms-in-patients-with-ossification-of-the-posterior-longitudinal-ligament-after-minor-trauma
#19
Jong-Myung Jung, Chun Kee Chung, Chi Heon Kim, Yunhee Choi
STUDY DESIGN: Retrospective Cohort study. OBJECTIVE: To identify the risk factors for acute progression of myelopathic symptoms (PMS) associated with ossification of the posterior longitudinal ligament (OPLL) after minor trauma and to compare the prognosis between an acute PMS group and a chronic PMS group. SUMMARY OF BACKGROUD DATA: Although the prevalence of OPLL among patients with cervical myelopathy is high, few studies have been published regarding the risk factors for acute PMS associated with OPLL after minor trauma...
June 9, 2017: Spine
https://www.readbyqxmd.com/read/28604488/anterior-cervical-discectomy-and-fusion-outcomes-over-10-years-a-prospective-study
#20
Glenn R Buttermann
STUDY DESIGN: Prospective cohort study with >10-year follow-up. OBJECTIVE: To assess the long-term, >10-year, clinical outcomes of anterior cervical discectomy and fusion (ACDF) and to compare outcomes based on primary diagnosis of disc herniation; stenosis or advanced degenerative disc disease (DDD); number of levels treated; and preexisting adjacent level degeneration. SUMMARY OF BACKGROUND DATA: ACDF is a proven treatment for patients with stenosis and disc herniation and results in significantly improved short- and intermediate-term outcomes...
June 9, 2017: Spine
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