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https://www.readbyqxmd.com/read/29330341/biomechanics-of-coupled-motion-in-the-cervical-spine-during-simulated-whiplash-in-patients-with-pre-existing-cervical-or-lumbar-spinal-fusion-a-finite-element-study
#1
H Huang, R W Nightingale, A B C Dang
OBJECTIVES: Loss of motion following spine segment fusion results in increased strain in the adjacent motion segments. However, to date, studies on the biomechanics of the cervical spine have not assessed the role of coupled motions in the lumbar spine. Accordingly, we investigated the biomechanics of the cervical spine following cervical fusion and lumbar fusion during simulated whiplash using a whole-human finite element (FE) model to simulate coupled motions of the spine. METHODS: A previously validated FE model of the human body in the driver-occupant position was used to investigate cervical hyperextension injury...
January 2018: Bone & Joint Research
https://www.readbyqxmd.com/read/29328004/thoracolumbar-injury-classification-and-severity-score-in-children-a-reliability-study
#2
Ross L Dawkins, Joseph H Miller, Omar I Ramadan, Michael C Lysek, Elizabeth N Kuhn, Brandon G Rocque, Michael J Conklin, R Shane Tubbs, Beverly C Walters, Bonita S Agee, Curtis J Rozzelle
OBJECTIVE There are many classification systems for injuries of the thoracolumbar spine. The recent Thoracolumbar Injury Classification and Severity Score (TLICS) has been shown to be a reliable tool for adult patients. The aim of this study was to assess the reliability of the TLICS system in pediatric patients. The validity of the TLICS system is assessed in a companion paper. METHODS The medical records of pediatric patients with acute, traumatic thoracolumbar fractures at a single Level 1 trauma center were retrospectively reviewed...
January 12, 2018: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/29325346/-evidence-based-guideline-for-the-management-of-acute-subaxial-cervical-spine-injury
#3
(no author information available yet)
In order to provide the clinical guidelines of acute subaxial cervical spine injury for the Chinese orthopedic surgeons, the Spine Trauma Group of Chinese Association of Orthopedic Surgeons compiled this guidelines.The guidelines apply to adult patients with acute (less than 3 weeks) subaxial cervical spine and/(or) spinal cord or nerve root injuries. The Study Group wrote the guidelines by setting up questions, determining search words, screening literatures according to inclusion and exclusion criteria, analyzing the included literatures, confirming evidence levels and then providing recommendations...
January 1, 2018: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/29324877/impact-of-extra-articular-pathologies-on-groin-pain-an-arthroscopic-evaluation
#4
Mitsunori Kaya
PURPOSE: For patients who have anterior hip pain evaluated by Patrick's test and tenderness at Scarpa's triangle, we perform periarticular debridement based on the hypothesis that extra-articular pathologies are responsible for the hip pain. The purpose of this study was to categorize the endoscopic extra-articular findings and to evaluate the clinical significance of periarticular pathologies in anterior hip pain. METHODS: Arthroscopic findings of 77 patients who underwent periarthritic debridement were evaluated...
2018: PloS One
https://www.readbyqxmd.com/read/29324724/evaluation-of-oxidative-stress-levels-and-antioxidant-enzyme-activities-in-burst-fractures
#5
Fetullah Kuyumcu, Abdurrahman Aycan
BACKGROUND Spinal burst fractures are pathologies that occur in spinal injuries and cause significant mortality and morbidity as a result. Burst fractures in spinal cord injuries can result in rapid and significant oxidative stress. In addition to the primary injury in severe spinal cord injuries, subsequent secondary lesions are mainly due to inflammatory cascade activation and excessive production of free radicals. This study evaluated oxidative stress and antioxidant enzyme levels in burst fractures. MATERIAL AND METHODS Twenty patients with burst fractures were diagnosed and underwent surgery and 20 healthy control subjects were included in the study...
January 11, 2018: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/29323806/spine-and-spinal-cord-injuries-after-falls-from-tree-stands-during-the-wisconsin-deer-hunting-season
#6
Kimberly Hamilton, Brandon Rocque, Nathaniel Brooks
BACKGROUND: Deer hunting is popular in much of the United States. In Wisconsin, use of tree stands for hunting is common. Spine surgeons at a Level 1 Trauma Center observed a high incidence of spine and spinal cord injury due to falls from tree stands while hunting. This study's purpose is to systematically characterize and classify those injuries. METHODS: We reviewed the University of Wisconsin Hospital and Clinics' trauma database for tree stand-related injuries from 1999 to 2013...
November 2017: WMJ: Official Publication of the State Medical Society of Wisconsin
https://www.readbyqxmd.com/read/29323044/magnetic-resonance-imaging-guided-focused-ultrasound-to-increase-localized-blood-spinal-cord-barrier-permeability
#7
Allison H Payne, Gregory W Hawryluk, Yoshimi Anzai, Henrik Odéen, Megan A Ostlie, Ethan C Reichert, Amanda J Stump, Satoshi Minoshima, Donna J Cross
Spinal cord injury (SCI) affects thousands of people every year in the USA, and most patients are left with some permanent paralysis. Therapeutic options are limited and only modestly affect outcome. To address this issue, we used magnetic resonance imaging-guided focused ultrasound (MRgFUS) as a non-invasive approach to increase permeability in the blood-spinal cord barrier (BSCB). We hypothesize that localized, controlled sonoporation of the BSCB by MRgFUS will aid delivery of therapeutics to the injury. Here, we report our preliminary findings for the ability of MRgFUS to increase BSCB permeability in the thoracic spinal cord of a normal rat model...
December 2017: Neural Regeneration Research
https://www.readbyqxmd.com/read/29322585/scapular-fractures-in-the-pan-scan-era
#8
Cortlyn Brown, Karim Elmobdy, Ali S Raja, Robert M Rodriguez
BACKGROUND: Scapular fractures have been traditionally taught to be associated with significant injuries and major morbidity. As we demonstrated with sternal fracture, pulmonary contusion and rib fracture, increased chest CT utilization and head-to-pelvis CT (pan-scan) protocols in blunt trauma evaluation, however, may diagnose minor, clinically irrelevant scapular fractures, possibly rendering previous teachings obsolete. OBJECTIVES: To determine the 1) percentages of scapular fractures seen on chest CT only (SOCTO) versus seen on both CXR and CT and of isolated scapular fracture (scapular fracture without other thoracic injuries), 2) frequencies of associated thoracic injury with scapular fracture, and 3) proportion of patients admitted, mortality, hospital length of stay, and injury severity scores (ISS), comparing four patient groups: scapular fracture, non-scapular fracture, scapular fracture SOCTO, and isolated scapular fracture...
January 11, 2018: Academic Emergency Medicine: Official Journal of the Society for Academic Emergency Medicine
https://www.readbyqxmd.com/read/29322211/-within-ring-based-sacroiliac-rod-fixation-may-overcome-the-weakness-of-spinopelvic-fixation-for-unstable-pelvic-ring-injuries-technical-notes-and-clinical-outcomes
#9
Kentaro Futamura, Tomonori Baba, Atsuhiko Mogami, Akio Kanda, Osamu Obayashi, Hideaki Iwase, Kazuo Kaneko
PURPOSE: Spinopelvic fixation and triangular osteosynthesis give firm internal fixation for unstable pelvic ring injuries (UPRI), but with sacrifice of mobility of the lumbar spine. Here, we describe the procedure and outcomes of a new approach, which we refer to as "within ring"-based sacroiliac rod fixation (SIRF). METHODS: The patient was placed in a prone position and longitudinal skin incisions were made at the medial margins of the bilateral posterior superior iliac spines (PSIS)...
January 10, 2018: International Orthopaedics
https://www.readbyqxmd.com/read/29319649/decreasing-radiation-exposure-in-pediatric-trauma-related-to-cervical-spine-clearance-a-quality-improvement-project
#10
Valerie Ann Waddell, Susan Connelly
STUDY DESIGN: Quality improvement project. OBJECTIVES: Reduce the amount of radiation exposure in the pediatric trauma population 5 years of age and older in relation to cervical spine clearance. BACKGROUND: The evaluation of pediatric cervical spine injuries must be accurate and timely to avoid missed injuries. The difficult clinical examination in pediatric trauma patients necessitates the use of radiologic examinations to avoid missing catastrophic injuries...
January 2018: Journal of Trauma Nursing: the Official Journal of the Society of Trauma Nurses
https://www.readbyqxmd.com/read/29317367/biomechanical-role-of-the-thoracolumbar-ligaments-of-the-posterior-ligamentous-complex-a-finite-element-study
#11
Cong-Cong Wu, Hai-Ming Jin, Ying-Zhao Yan, Jian Chen, Ke Wang, Jian-Le Wang, Zeng-Jie Zhang, Ai-Min Wu, Xiang-Yang Wang
OBJECTIVES: To investigate the effect of sequential ligament failure on the range of motion (ROM) and location of the instantaneous axes of rotation (IAR) of the thoracolumbar spine (T12-L1) finite element (FE) model, and to verify the role of the supraspinous ligament (SSL) in maintaining the stability of the injured thoracolumbar spine. METHODS: A FE model of the fracture thoracolumbar spine was developed and validated against published data. The posterior ligamentous complex (PLC) in the fractured T12-L1 segment was then reduced in a sequential manner from the facet capsular ligament (FCL), part of the interspinous ligament (ISL), supraspinous ligament, and entire ISL, to the ligamentum flavum (LF)...
January 6, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29316829/effects-of-carbomer-940-hydrogel-on-burn-wounds-an-in-vitro-and-in-vivo-study
#12
Farzad Hayati, Seyed Mehdi Ghamsari, Mohammad Mehdi Dehghan, Ahmad Oryan
PURPOSE: This study was designed to investigate the applicability of carbomer 940 hydrogel on skin-burn wounds by focusing on its effects on the zone of stasis. METHOD: Fibroblast cells were used to assess the cytotoxicity of carbomer 940. Wound healing was monitored by laser Doppler flowmetry and histopathological analysis. Twenty adult male Wistar rats were randomly divided into two groups (N = 10 each). After shaving their dorsum, a "burn comb" was contacted bilaterally on each side of the spine...
January 10, 2018: Journal of Dermatological Treatment
https://www.readbyqxmd.com/read/29315127/tidemark-avulsions-are-a-predominant-form-of-endplate-irregularity
#13
Britta Berg-Johansen, Deeptee Jain, Ellen C Liebenberg, Aaron J Fields, Thomas M Link, Conor W O'Neill, Jeffrey C Lotz
STUDY DESIGN: Descriptive histologic and MRI study of human cadaveric spines. OBJECTIVE: To identify and characterize common endplate pathologies to form a histologic foundation for an etiology-based classification system. SUMMARY OF BACKGROUND DATA: Irregularities at the spinal disc-vertebra interface are associated with back pain and intervertebral disc herniation injuries. However, there is currently a lack of consensus regarding terminology for classification...
January 8, 2018: Spine
https://www.readbyqxmd.com/read/29310946/validation-of-lumbar-spine-loading-from-a-musculoskeletal-model-including-the-lower-limbs-and-lumbar-spine
#14
Jason A Actis, Jasmin D Honegger, Deanna H Gates, Anthony J Petrella, Luis A Nolasco, Anne K Silverman
Low back mechanics are important to quantify to study injury, pain and disability. As in vivo forces are difficult to measure directly, modeling approaches are commonly used to estimate these forces. Validation of model estimates is critical to gain confidence in modeling results across populations of interest, such as people with lower-limb amputation. Motion capture, ground reaction force and electromyographic data were collected from ten participants without an amputation (five male/five female) and five participants with a unilateral transtibial amputation (four male/one female) during trunk-pelvis range of motion trials in flexion/extension, lateral bending and axial rotation...
December 13, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/29310380/traumatic-c1-2-posterolateral-dislocation-with-dens-fracture-injury-of-the-transverse-atlantal-ligament-and-unilateral-facet-fracture-with-subluxation-of-c6-7-a-case-report
#15
Jong-Beom Park, Sung Shik Kang, Jin S Yeom
RATIONALE: Traumatic C1-2 dislocation associated with contiguous or noncontiguous cervical spine injury is rare. Moreover, there have been no reports describing traumatic C1-2 dislocation associated with multiple contiguous and noncontiguous cervical injuries. PATIENT CONCERNS: The authors present a case of a 20-year-old male with painful limitation of motion of the neck. This complex cervical injury occurred due to hyperextension of the head in a rotated position...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29310322/effect-of-training-in-advanced-trauma-life-support-on-the-kinematics-of-the-spine-a-simulation-study
#16
Raquel Gordillo Martin, Pedro E Alcaráz, Laura Juguera Rodriguez, Antonio Nieto Fernandez-Pacheco, Elena Marín-Cascales, Tomás T Freitas, Manuel Pardo Rios
More than 7.5 million people in the world are affected by spinal cord injury (SCI). In this study, we aimed to analyze the effect of training in advanced trauma life support (ATLS) on the kinematics of the spine when performing different mobilization and immobilization techniques on patients with suspected SCI. A quasi-experimental study, clinical simulation, was carried out to determine the effect of training in ATLS on 32 students enrolled in the Master's program of Emergency and Special Care Nursing. The evaluation was performed through 2 maneuvers: placing of the scoop stretcher (SS) and spinal board (SB), with an actor who simulated a clinical situation of suspected spinal injury...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29303132/surgical-decompression-for-traumatic-spinal-cord-injury-in-a-tertiary-center
#17
O A Ojo, E O Poluyi, B S Owolabi, O O Kanu, M O Popoola
BACKGROUND: There are controversies regarding the importance and timing of spinal cord decompression following trauma. Documented evidence shows that early decompression in the setting of acute spinal cord injury (SCI) improves neurologic outcomes. Our objective was to evaluate the outcome of posttraumatic spinal cord decompression with or without spinal stabilization in our region. METHODOLOGY: We performed a cross-sectional study on adult patients who presented with acute spinal cord compression of traumatic etiology within a 2-year period...
November 2017: Nigerian Journal of Clinical Practice
https://www.readbyqxmd.com/read/29302913/principles-and-applications-of-the-balanced-steady-state-free-precession-sequence-in-small-animal-low-field-mri
#18
Mario Ricciardi
Magnetic resonance imaging (MRI) in small animal practice is largely based on classic two-dimensional spin-echo, inversion recovery and gradient-echo sequences which are largely limited by low spatial resolution, especially in low-field (LF)-MRI scanners. Nowadays, however, the availability of volumetric sequences can open new perspectives and enhance the diagnostic potential of this imaging modality. Balanced steady-state free precession (bSSFP) is a three-dimensional gradient-echo sequence in which image contrast is given by the ratio of T2 and T1, resulting in low soft-tissue signal, poor cerebral grey/white matter distinction and a bright signal from free fluid and fat...
January 4, 2018: Veterinary Research Communications
https://www.readbyqxmd.com/read/29299101/rib-head-dislocation-causing-spinal-canal-stenosis-in-a-child-with-neurofibromatosis-type-1
#19
Alan M Chen, Jeffrey B Neustadt, Jennifer Neville Kucera
A 10-year-old female with neurofibromatosis type 1 and severe dystrophic scoliosis presented with a two-month history of difficulty ambulating due to low back pain. The patient did not have any neurological symptoms. MRI of the thoracolumbar spine demonstrated subluxation of the right posterior tenth and eleventh ribs through their respective neural foramina, with mild mass effect on the thecal sac without abnormal cord signal or cord compression. Groups of neurofibromas were present along the right ribs and paravertebral soft tissues around these levels...
August 2017: Journal of Radiology Case Reports
https://www.readbyqxmd.com/read/29295647/prophylactic-riluzole-attenuates-oxidative-stress-damage-in-spinal-cord-distraction
#20
Eileen Nicole Shimizu, Jennifer L Seifert, Kevin J Johnson, Mario Romero-Ortega
Spinal cord injury (SCI) without radiographic abnormalities (SCIWORA) presents a significant challenge due the loss of function despite an apparent normal anatomy. The cause of dysfunction is not understood and specific treatment options are lacking. Some scoliosis corrective surgeries result in SCIWORA, where stretching of the spinal cord can lead to vascular compromise and hypoxia. This procedure allows for the implantation of neuroprotective strategies designed to prevent iatrogenic SCI. We utilized a model of atraumatic SCI to evaluate the efficacy of the sodium channel blocker Riluzole, as a prophylactic neuroprotectant...
January 2, 2018: Journal of Neurotrauma
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