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https://www.readbyqxmd.com/read/29729467/the-efficacy-of-thoracolumbar-bracing-on-spinal-immobilization-a-precise-assessment-of-gross-intersegmental-and-segmental-spinal-motion-restriction-by-a-3d-kinematic-system
#1
Gernot Lang, Anja Hirschmüller, Stefanie Patermann, Patric Eichelberger, Peter Strohm, Heiner Baur, Norbert P Südkamp, Georg W Herget
BACKGROUND: Various diseases of the spine are treated by immobilization via orthoses, although detailed evidence on the efficiency of orthotic bracing remains elusive. The present study sought to investigate the impact of three different orthoses on spinal immobilization utilizing three dimensional (3D) kinematic measurements. METHODS: Twelve healthy volunteers performed different motion tasks such as trunk flexion/extension and bilateral trunk bending, respectively...
May 2, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29700596/modeling-and-analysis-of-a-new-locomotion-control-neural-networks
#2
Q Liu, J Z Wang
Experimental data have shown that inherent bursting of the neuron plays an important role in the generation of rhythmic movements in spinal networks. Based on the mechanism that the spinal neurons of a lamprey generate this inherent bursting, this paper builds a simplified inherent bursting neuron model. A new locomotion control neural network is built that takes advantage of this neuron model and its performance is analyzed mathematically and by numerical simulation. From these analyses, it is found that the new control networks have no restriction on their topological structure for generating the oscillatory outputs...
April 26, 2018: Biological Cybernetics
https://www.readbyqxmd.com/read/29669167/scoliosis-in-fibrous-dysplasia-mccune-albright-syndrome-factors-associated-with-curve-progression-and-effects-of-bisphosphonates
#3
Jason A Berglund, Sri Harsha Tella, Kaitlyn F Tuthill, Lauren Kim, Lori C Guthrie, Scott M Paul, Robert Stanton, Michael T Collins, Alison M Boyce
BACKGROUND: Scoliosis is a complication of fibrous dysplasia/McCune-Albright syndrome (FD/MAS), however risk factors and long-term outcomes are unknown. Bisphosphonates are commonly used; however, it is unknown whether their use decrease the risk of progressive scoliosis. METHODS: Clinical data from the NIH cohort study was reviewed. Cobb angles were measured, and variables associated with scoliosis progression were identified. RESULTS: Of 138 subjects with available radiographs, 84 (61%) had scoliosis, including 55 (65%) classified as mild (Cobb angle >10 to ≤30°), 11 (13%) as moderate (>30 to ≤45°), and 18 (22%) as severe (>45°)...
April 18, 2018: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29452031/prehospital-cervical-spine-motion-immobilization-versus-spine-motion-restriction
#4
Erik E Swartz, W Steven Tucker, Matthew Nowak, Jason Roberto, Amy Hollingworth, Laura C Decoster, Thomas W Trimarco, Jason P Mihalik
OBJECTIVE: This study aims to evaluate the efficacy of two different spinal immobilization techniques on cervical spine movement in a simulated prehospital ground transport setting. METHODS: A counterbalanced crossover design was used to evaluate two different spinal immobilization techniques in a standardized environment. Twenty healthy male volunteers (age = 20.9 ± 2.2 yr) underwent ambulance transport from a simulated scene to a simulated emergency department setting in two separate conditions: utilizing traditional spinal immobilization (TSI) and spinal motion restriction (SMR)...
February 16, 2018: Prehospital Emergency Care
https://www.readbyqxmd.com/read/29447489/compulsory-use-of-the-backboard-is-associated-with-increased-frequency-of-thoracolumbar-imaging
#5
Brian M Clemency, Christopher T Tanski, Jennifer Gibson Chambers, Michael O'Brien, Andrew S Knapp, Alexander J Clark, Patrick McGoff, Johanna Innes, Heather A Lindstrom, David Hostler
BACKGROUND: Backboards have been shown to cause pain in uninjured patients. This may alter physical exam findings, leading emergency department (ED) providers to suspect a spinal injury when none exists resulting in additional imaging of the thoracolumbar spine. New York had previously employed a "Spinal Immobilization" protocol that included compulsory backboard application for all patients with suspected spinal injuries. In 2015, New York instituted a new "Spinal Motion Restriction" protocol that made backboard use optional for these patients...
February 15, 2018: Prehospital Emergency Care
https://www.readbyqxmd.com/read/29332742/the-effects-of-dorso-lumbar-motion-restriction-on-emg-activity-of-selected-muscles-during-running
#6
Joseph J Morley, Edward Traum
The effects of restricting dorso-lumbar spine mobility on electromyographic activity of the erector spinae, quadriceps femoris, hamstrings and gastrocnemius muscles in runners was investigated. Thermoplastic casting material was fashioned into a rigid orthosis and used to restrict spinal motion during running. Volunteers ran on a treadmill at 2.78 m/sec, under normal conditions and with spinal motion restricted. Surface electromyographic data was collected during both sets of trials. Normal electromyographic data was also compared with previous authors to determine similarity with their electromyographic data...
January 2018: Journal of Bodywork and Movement Therapies
https://www.readbyqxmd.com/read/29283970/prehospital-spine-immobilization-spinal-motion-restriction-in-penetrating-trauma-a-practice-management-guideline-from-the-eastern-association-for-the-surgery-of-trauma-east
#7
Catherine G Velopulos, Hasan M Shihab, Lawrence Lottenberg, Marcie Feinman, Ali Raja, Jeffrey Salomone, Elliott R Haut
BACKGROUND: Spine immobilization in trauma has remained an integral part of most emergency medical services (EMS) protocols despite a lack of evidence for efficacy and concern for associated complications, especially in penetrating trauma patients. We reviewed the published evidence on the topic of prehospital spine immobilization or spinal motion restriction in adult patients with penetrating trauma to structure a Practice Management Guideline. METHODS: We conducted a Cochrane style systematic review and meta-analysis, and applied GRADE methodology to construct recommendations...
December 28, 2017: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/29124954/practicality-of-using-the-figure-of-eight-bandage-to-prevent-fatal-wound-dehiscence-after-spinal-tumor-surgery-for-upper-thoracic-metastasis
#8
Dong Kwang Seo, Jin-Hoon Park, Sun Kyu Oh, Yongchel Ahn, Sang Ryong Jeon
OBJECT: Serious postoperative wound problems can frequently develop after surgery with perioperative RT for upper thoracic metastatic lesions. The figure-of-eight bandage can restrict excessive shoulder motion, which could prevent wound dehiscence. The purpose of this study was to describe the efficacy of using the figure-of-eight bandage to prevent postoperative wound dehiscence. METHODS: Between February 2005 and July 2015, we retrospectively evaluated the medical records of cancer patients who underwent surgery with or without RT for spinal metastasis involving the upper thoracic spine...
November 10, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/29113764/effect-of-two-level-pedicle-screw-fixation-with-different-rod-materials-on-lumbar-spine-a-finite-element-study
#9
Jayanta Kumar Biswas, Masud Rana, Santanu Majumder, Santanu Kumar Karmakar, Amit Roychowdhury
BACKGROUND: Pedicle-screw-rod fixation system is very popular surgical remedy for degenerative disc disease. It is important to observe load vs. spinal motion characteristic for better understanding of clinical problems and treatment of spinal instability associated with low-back pain. OBJECTIVE: The objective of this study is to understand the effect [range of motion (ROM) and intervertebral foramen height] of pedicle-screw fixation with three rod materials on lumbar spine under three physiological loading conditions...
March 2018: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/29044691/the-role-of-magnetization-transfer-in-the-observed-contrast-in-t1-weighted-imaging-under-clinical-setups
#10
U Eliav, G Navon
In T1 weighted magnetic resonance imaging of brain and spinal cord in the clinical setting, the white matter (WM) appears with greater intensity than the gray matter (GM). This contrast has been assigned to differences in T1 values. In these experiments the RF pulses are too long to excite both the water and the species with restricted motion of the protons (SRMP). In in vitro studies using short RF pulses, the contrast is reversed, with greater intensity for the GM. These results raise the question of whether magnetization transfer (MT) plays a role in the contrast observed in the T1 weighting experiments...
October 18, 2017: NMR in Biomedicine
https://www.readbyqxmd.com/read/28921731/interobserver-agreement-in-pediatric-cervical-spine-injury-assessment-between-prehospital-and-emergency-department-providers
#11
Lorin R Browne, Hamilton Schwartz, Fahd A Ahmad, Michael Wallendorf, Nathan Kuppermann, E Brooke Lerner, Julie C Leonard
BACKGROUND: Investigators have derived cervical spine injury (CSI) decision support tools from physician observations. There is a need to demonstrate that prehospital emergency medical services (EMS) providers can use these tools to appropriately determine the need for spinal motion restrictions and make field disposition decisions. OBJECTIVES: The objective was to determine the interobserver agreement between EMS and emergency department (ED) providers for CSI risk assessment variables and overall gestalt for CSI in children after blunt trauma...
December 2017: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/28881121/the-predictable-factors-of-the-postoperative-kyphotic-change-of-sagittal-alignment-of-the-cervical-spine-after-the-laminoplasty
#12
Jun Seok Lee, Dong Wuk Son, Su Hun Lee, Dong Ha Kim, Sang Weon Lee, Geun Sung Song
OBJECTIVE: Laminoplasty is an effective surgical method for treating cervical degenerative disease. However, postoperative complications such as kyphosis, restriction of neck motion, and instability are often reported. Despite sufficient preoperative lordosis, this procedure often aggravates the lordotic curve of the cervical spine and straightens cervical alignment. Hence, it is important to examine preoperative risk factors associated with postoperative kyphotic alignment changes. Our study aimed to investigate preoperative radiologic parameters associated with kyphotic deformity post laminoplasty...
September 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28777063/comprehensive-biomechanical-analysis-of-three-reconstruction-techniques-following-total-sacrectomy-an-in-vitro-human-cadaveric-model
#13
COMPARATIVE STUDY
Mohamed Macki, Rafael De la Garza-Ramos, Ashley A Murgatroyd, Kenneth P Mullinix, Xiaolei Sun, Bryan W Cunningham, Brandon A McCutcheon, Mohamad Bydon, Ziya L Gokaslan
OBJECTIVE Aggressive sacral tumors often require en bloc resection and lumbopelvic reconstruction. Instrumentation failure and pseudarthrosis remain a clinical concern to be addressed. The objective in this study was to compare the biomechanical stability of 3 distinct techniques for sacral reconstruction in vitro. METHODS In a human cadaveric model study, 8 intact human lumbopelvic specimens (L2-pelvis) were tested for flexion-extension range of motion (ROM), lateral bending, and axial rotation with a custom-designed 6-df spine simulator as well as axial compression stiffness with the MTS 858 Bionix Test System...
November 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28622909/biomechanical-evaluation-of-a-novel-pedicle-screw-based-interspinous-spacer-a-finite-element-analysis
#14
Hsin-Chang Chen, Jia-Lin Wu, Shou-Chieh Huang, Zheng-Cheng Zhong, Shiu-Ling Chiu, Yu-Shu Lai, Cheng-Kung Cheng
Interspinous spacers have been designed to provide a minimally invasive surgical technique for patients with lumbar spinal stenosis or foraminal stenosis. A novel pedicle screw-based interspinous spacer has been developed in this study, and the aim of this finite element experiment was to investigate the biomechanical differences between the pedicle screw-based interspinous spacer (M-rod system) and the typical interspinous spacer (Coflex-F™). A validated finite element model of an intact lumbar spine was used to analyze the insertions of the Coflex-F™, titanium alloy M-rod (M-Ti), and polyetheretherketone M-rod (M-PEEK), independently...
August 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/28554052/acute-effects-of-spinal-bracing-on-scapular-kinematics-in-adolescent-idiopathic-scoliosis
#15
Gozde Gur, Elif Turgut, Cigdem Ayhan, Gul Baltaci, Yavuz Yakut
BACKGROUND: Bracing is the most common nonsurgical treatment for adolescent idiopathic scoliosis. Spinal braces affect glenohumeral and scapulothoracic motion because they restrict trunk movements. However, the potential spinal-bracing effects on scapular kinematics are unknown. The present study aimed to investigate the acute effects of spinal bracing on scapular kinematics in adolescent idiopathic scoliosis. METHODS: Scapular kinematics, including scapular internal/external rotation, posterior/anterior tilting, and downward/upward rotation during scapular plane elevation, were evaluated in 27 in-brace and out-of-brace adolescent idiopathic scoliosis patients with a three-dimensional electromagnetic tracking system...
August 2017: Clinical Biomechanics
https://www.readbyqxmd.com/read/28545560/influences-of-lumbar-disc-herniation-on-the-kinematics-in-multi-segmental-spine-pelvis-and-lower-extremities-during-five-activities-of-daily-living
#16
Shengzheng Kuai, Wenyu Zhou, Zhenhua Liao, Run Ji, Daiqi Guo, Rui Zhang, Weiqiang Liu
BACKGROUND: Low back pain (LBP) is a common problem that can contribute to motor dysfunction. Previous studies reporting the changes in kinematic characteristics caused by LBP present conflicting results. This study aimed to apply the multisegmental spinal model to investigate the kinematic changes in patients with lumbar disc herniation (LDH) during five activities of daily living (ADLs). METHODS: Twenty-six healthy subjects and 7 LDH patients participated in this study and performed level walking, stair climbing, trunk flexion, and ipsilateral and contralateral pickups...
May 25, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28505959/the-application-of-a-pre-positioned-upper-cervical-traction-mobilization-to-patients-with-painful-active-cervical-rotation-impairment-a-case-series
#17
Douglas S Creighton, Doug Marsh, Mark Gruca, Melissa Walter
BACKGROUND: Cervical mobilization and manipulation have been shown to improve cervical range of motion and pain. Cervical rotatory thrust manipulation has been associated with adverse patient reaction and damage to the V3 segment of the vertebral artery (VA). OBJECTIVE: To document and describe the effects of an upper cervical (UC) traction based mobilization on participants with restricted and painful cervical rotation and to document if the mobilization changed blood flow velocity through the vertebral artery...
September 22, 2017: Journal of Back and Musculoskeletal Rehabilitation
https://www.readbyqxmd.com/read/28501121/validation-of-a-field-spinal-motion-restriction-protocol-in-a-level-i-trauma-center
#18
James M Tatum, Nicolas Melo, Ara Ko, Navpreet K Dhillon, Eric J T Smith, Dorothy A Yim, Galinos Barmparas, Eric J Ley
BACKGROUND: Spinal motion restriction (SMR) after traumatic injury has been a mainstay of prehospital trauma care for more than 3 decades. Recent guidelines recommend a selective approach with cervical spine clearance in the field when criteria are met. MATERIALS AND METHODS: In January 2014, the Department of Health Services of the City of Los Angeles, California, implemented revised guidelines for cervical SMR after blunt mechanism trauma. Adult patients (aged ≥18 y) with an initial Glasgow Coma Scale (GCS) score of ≥13 presented to a single level I trauma center after blunt mechanism trauma over the following 1-y period were retrospectively reviewed...
May 1, 2017: Journal of Surgical Research
https://www.readbyqxmd.com/read/28245994/anterior-migration-after-bryan-cervical-disc-arthroplasty-the-relationship-between-hyperlordosis-and-its-impact-on-clinical-outcomes
#19
Tao Lei, Tong Tong, Dechao Miao, Xianda Gao, Jiaxin Xu, Di Zhang, Yong Shen
BACKGROUND: Various modifications have been tested to prevent kyphosis after Bryan cervical disc arthroplasty (CDA). However, the migration of Bryan prostheses has not been systematically studied. This study investigated the cause of anterior migration (AM) and assessed the effect of AM on clinical and radiographic outcomes. METHODS: We retrospectively reviewed 46 consecutive patients who underwent modified Bryan CDA between August 2006 and December 2010. We measured functional spinal unit, angle of operative disc space, range of motion, and sagittal alignment of cervical spine preoperatively, postoperatively, and at the final follow-up, and compared these values between the AM and non-AM groups...
May 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28210045/a-kinematic-analysis-of-the-lower-limb-with-regard-to-restricted-spinal-motion-during-gait
#20
Hyeon-Nam Song, Young Mi Kim, Kyoung Kim
[Purpose] The purpose of this study was to investigate the effect of restricted spinal motion on kinematic changes in the lower extremities using a rigid thoracolumbosacral orthosis. [Subjects and Methods] Forty healthy males in their 20s were selected as the sample, which was randomly and evenly divided into two groups: (1) the WT group (with a thoracolumbosacral orthosis) and (2) the WOT group (without a thoracolumbosacral orthosis). The spinal orthosis used in this study was a thoracolumbosacral orthosis called a plastic body jacket...
January 2017: Journal of Physical Therapy Science
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