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C1-2 injuries

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https://www.readbyqxmd.com/read/28641140/effect-of-c1-inh-on-ischemia-reperfusion-injury-in-a-porcine-limb-ex-vivo-perfusion-model
#1
Mai M Abdelhafez, Jane Shaw, Damian Sutter, Jonas Schnider, Yara Banz, Hansjörg Jenni, Esther Voegelin, Mihai A Constantinescu, Robert Rieben
Revascularization of an amputated limb within 4-6h is essential to avoid extensive ischemia/reperfusion (I/R) injury leading to vascular leakage, edema and tissue necrosis. I/R injury is a pathological inflammatory condition that occurs during reperfusion of an organ or tissue after prolonged ischemia. It is characterized by a complex crosstalk between endothelial cell activation and the activation of plasma cascades. Vasculoprotective pharmacological intervention to prevent I/R injury might be an option to prolong the time window between limb amputation and successful replantation...
June 19, 2017: Molecular Immunology
https://www.readbyqxmd.com/read/28628156/-atlantoaxial-reduction-and-fixation-guided-by-the-intraoperative-ct
#2
(no author information available yet)
OBJECTIVE: To evaluate the clinical result of atlantoaxial reduction and fixation guided by the intraoperative CT. METHODS: Sixteen cases were retrospectively studied, including seven males and nine females, with the mean age of 49.9 years. Twelve cases were diagnosed as chronic atlantoaxial instability or dislocation, while four cases as acute odontoid fracture and dislocation. Among the sixteen cases, fourteen underwent atlantoaxial fusion, while two underwent temporary atlantoaxial fixation without fusion...
June 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28627291/early-complications-morbidity-and-mortality-in-octo-and-nonagenarians-undergoing-posterior-intraoperative-spinal-navigation-based-c1-2-fusion-for-type-ii-odontoid-process-fractures
#3
Basem Ishak, Till Schneider, Valerie Gimmy, Andreas W Unterberg, Karl L Kiening
Type II odontoid fractures represent the most common cervical spine injury in the elderly. The decision for surgical treatment is still controversial, particularly with regard to the elevated perioperative risk attributed to frequent comorbidities and poor bone quality. Purpose of this study was to assess both short-term mortality and mid-term clinical and radiological outcome in the elderly. Between January 2007 and December 2015, 35 patients with type II odontoid process fractures who underwent posterior atlanto-axial instrumentation using a modified Goel-Harms technique were retrospectively analyzed and prospectively examined clinically and radiologically...
June 18, 2017: Journal of Neurotrauma
https://www.readbyqxmd.com/read/28615032/evaluation-of-computed-tomography-post-processing-images-in-postoperative-assessment-of-lisfranc-injuries-compared-with-plain-radiographs
#4
Haobo Li, Yanxi Chen, Minfei Qiang, Kun Zhang, Yuchen Jiang, Yijie Zhang, Xiaoyang Jia
BACKGROUND: The objective of this study is to evaluate the value of computed tomography (CT) post-processing images in postoperative assessment of Lisfranc injuries compared with plain radiographs. METHODS: A total of 79 cases with closed Lisfranc injuries that were treated with conventional open reduction and internal fixation from January 2010 to June 2016 were analyzed. Postoperative assessment was performed by two independent orthopedic surgeons with both plain radiographs and CT post-processing images...
June 14, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28551599/a-rare-cause-of-acute-dysphagia-acute-calcific-tendonitis-of-the-longus-colli-muscle
#5
Hanadi Abou Dargham, Faton Bytyci, Christian Shuman, Anton Stolear
We are presenting a case of a 78-year-old female with multiple comorbidities and history of neck surgery, who presented with acute dysphagia, odynophagia and neck pain that has been progressively getting worse over the course of 2 days, with no recent injury or infection. The patient was afebrile. There were no visible signs of infection on routine oropharyngeal examination. Initial workup was unremarkable except for elevated erythrocyte sedimentation rate, C-reactive protein and creatinine. CT of the cervical spine ruled out any fracture or cervical spine injury but showed an area of calcification, prevertebral oedema and fluid collection inferior to the anterior arch of C1...
May 27, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28550143/kicked-to-touch-hoodwinked-by-torticollis
#6
Ciaran K Mc Donald, Niall Mc Goldrick, Cliodhna Ni Fhoghlu, Fintan Shannon
A 2-year-old girl presented to the emergency department with a 3-day history of a painful stiff neck after getting a kick to her head from her older brother. Her general practitioner had recently started her on oral antibiotics for otitis media. Plain film imaging of her cervical spine on admission revealed anterior subluxation of C2 on C3 suggestive of bifacetal dislocation. Subsequent CT imaging confirmed malalignment of the upper cervical spine. The patient was admitted and worked up with MRI of the cervical spine which unexpectedly revealed a large 4×2 cm retropharyngeal abscess extending from C1 to C4...
May 26, 2017: BMJ Case Reports
https://www.readbyqxmd.com/read/28512615/delayed-infarction-of-medullar-and-cerebellum-3-months-after-vertebral-artery-injury-with-c1-2-fracture-case-report
#7
Yunsuk Her, Suk Hyung Kang, Ilhom Abdullaev, Noah Kim
The clinical manifestations of vertebral artery (VA) injury (VAI) after cervical trauma range from asymptomatic to fatal cerebral infarction. Thrombotic occlusion and embolization to the distal arteries can cause cerebellar and brain stem infarction within days after trauma. We report a 64-year-old man who underwent arthrodesis surgery for C1 and C2 fractures. He had left VAI at the C2 transverse foramen site but was asymptomatic. The patient experiences brainstem and cerebellar infarction 3 months after injury to the VA, and we are here to discuss the treatment of VAI after cervical trauma...
April 2017: Korean Journal of Neurotrauma
https://www.readbyqxmd.com/read/28431136/c1-lateral-mass-displacement-and-transverse-atlantal-ligament-failure-in-jefferson-s-fracture-a-biomechanical-study-of-the-rule-of-spence
#8
Rafeek O Woods, Serkan Inceoglu, Yusuf T Akpolat, Wayne K Cheng, Brice Jabo, Olumide Danisa
BACKGROUND: Jefferson's fracture, first described in 1927, represents a bursting fracture of the C1 ring with lateral displacement of the lateral masses. It has been determined that if the total lateral mass displacement (LMD) exceeds 6.9 mm, there is high likelihood of transverse atlantal ligament (TAL) rupture, and if LMD is less than 5.7 mm TAL injury is unlikely. Several recent radiographic studies have questioned the accuracy and validity of the "rule of Spence" and it lacks biomechanical support...
April 20, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28428212/a-novel-mri-biomarker-of-spinal-cord-white-matter-injury-t2-weighted-white-matter-to-gray-matter-signal-intensity-ratio
#9
A R Martin, B De Leener, J Cohen-Adad, D W Cadotte, S Kalsi-Ryan, S F Lange, L Tetreault, A Nouri, A Crawley, D J Mikulis, H Ginsberg, M G Fehlings
BACKGROUND AND PURPOSE: T2*-weighted imaging provides sharp contrast between spinal cord GM and WM, allowing their segmentation and cross-sectional area measurement. Injured WM demonstrates T2*WI hyperintensity but requires normalization for quantitative use. We introduce T2*WI WM/GM signal-intensity ratio and compare it against cross-sectional area, the DTI metric fractional anisotropy, and magnetization transfer ratio in degenerative cervical myelopathy. MATERIALS AND METHODS: Fifty-eight patients with degenerative cervical myelopathy and 40 healthy subjects underwent 3T MR imaging, covering C1-C7...
April 20, 2017: AJNR. American Journal of Neuroradiology
https://www.readbyqxmd.com/read/28383091/a-new-technique-for-the-surgical-treatment-of-atlantoaxial-instability-c1-lateral-mass-and-c2-3-transfacet-screwing
#10
Salim Senturk, Goktug Akyoldas, Onur Yaman, Ali Fahir Ozer
AIM: Atlantoaxial instability is a special entity that may be caused by many disorders such as trauma, tumor, arthritis, congenital malformation and infection. Atlantoaxial fixation is needed to provide stability, prevent neurological deficits and correct deformity. The objective of this study is to introduce an alternative technique for the treatment of atlantoaxial instability in patients who have vertebral artery anomaly, anomalous C2 or osteoporosis. MATERIAL AND METHODS: C1-2-3 fixation was performed in a 50-years-old, male patient with atlantoaxial instability due to os odontoideum...
March 9, 2017: Turkish Neurosurgery
https://www.readbyqxmd.com/read/28359675/measuring-marrow-density-and-area-using-peripheral-quantitative-computed-tomography-at-the-tibia-precision-in-young-and-older-adults-and-individuals-with-spinal-cord-injury
#11
Jenna C Gibbs, Zachary M Brown, Andy K O Wong, B Catharine Craven, Jonathan D Adachi, Lora M Giangregorio
The objective of this study was to compare the test-retest precision error for peripheral quantitative computed tomography (pQCT)-derived marrow density and marrow area segmentation at the tibia using 3 software packages. A secondary analysis of pQCT data in young adults (n = 18, mean ± standard deviation 25.4 ± 3.2 yr), older adults (n = 47, 71.8 ± 8.2 yr), and individuals with spinal cord injury (C1-T12 American Spinal Injury Association Impairment Scale, classes A-C; n = 19, 43...
March 27, 2017: Journal of Clinical Densitometry
https://www.readbyqxmd.com/read/28330796/chronic-low-back-pain-after-lumbosacral-fracture-due-to-sagittal-and-frontal-vertebral-imbalance
#12
L Boyoud-Garnier, M Boudissa, S Ruatti, G Kerschbaumer, P Grobost, J Tonetti
PROBLEM AND HYPOTHESIS: Over time, some patients with unilateral or bilateral lumbosacral injuries experience chronic low back pain. We studied the sagittal and frontal balance in a population with these injuries to determine whether mismatch in the pelvic and lumbar angles are associated with chronic low back pain. PATIENTS AND METHODS: Patients with posterior pelvic ring fractures (Tile C1, C2, C3 and A3.3) that had healed were included. Foreign patients and those with an associated spinal or acetabular fracture or nonunion were excluded...
June 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28323717/treatment-of-lumbar-split-fracture-dislocation-with-short-segment-or-long-segment-posterior-fixation-and-anterior-fusion
#13
Fei Chen, Yijun Kang, Haisheng Li, Guohua Lv, Chang Lu, Jing Li, Bing Wang, Weihua Chen, Zhehao Dai
STUDY DESIGN: Retrospective analysis of 16 patients. SUMMARY OF BACKGROUND DATA: The lumbar split fracture-dislocation is a rare but severe injury, which is type C1.2.1 fracture in the Association for the Study of Internal Fixation spine fracture classification. The axial compressive and torsional force shattered the vertebral body into 2 halves and displaced them rotationally. This kind of fracture is so highly unstable that the treatment is very challenging. PURPOSE: The purpose of this study was to report and compare on clinical outcome and complications of patients with lumbar split fracture-dislocation which had been treated either short-segment or long-segment posterior fixation and anterior fusion...
April 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28321382/understanding-the-course-of-vertebral-artery-at-craniovertebral-junction-in-occipital-assimilation-of-atlas-made-simplified-using-conventional-angiography
#14
Anita Jagetia, Tushit Mewda, Ishu Bishnoi, Manoj Bhutte, Hukum Singh, A K Srivastava, Daljit Singh
Introduction Preoperative assessment of vertebral artery (VA) is important to avoid its injury during surgery at craniovertebral junction (CVJ). The main concern is the course of third segment of VA (V3) while performing instrumentation at CVJ, that is, segment of VA from its course through transverse foramen of C2 to its course along the posterior arch of C1. This segment of VA includes its passage through C1 transverse foramen as well. This observational study was done to analyze the course, curvature, and termination of VA in patients with occipital assimilation of atlas at CVJ, a complex congenital anomaly, and compared with the normal course for better understanding especially by young neurosurgeons and spine surgeons...
April 2017: Journal of Neurological Surgery. Part B, Skull Base
https://www.readbyqxmd.com/read/28262355/the-importance-of-a-neck-exam-in-sport-related-concussion-cervical-schwannoma-in-post-concussion-syndrome
#15
David M Langelier, Kathryn J Schneider, John Hurlbert, Chantel T Debert
OBJECTIVE: Few cases of cervical schwannoma have been reported following head trauma. The present case, involves a schwannoma of the C2 spinal nerve mimicking post-concussion symptoms following a sport-related concussion (SRC). DESIGN: Case study. SETTING: University of Calgary, Sport Medicine Clinic, Calgary, Alberta, Canada. RESULTS: We report a 28 year old, athlete who developed headache, dizziness, photophobia, and neck pain following a cycling accident...
May 2017: Physical Therapy in Sport
https://www.readbyqxmd.com/read/28259377/intra-pelvic-pressure-changes-after-pelvic-fracture-a-cadaveric-study-quantifying-the-effect-of-a-pelvic-binder-and-limb-bandaging-over-a-bolster
#16
Rhys Morris, Andrew Loftus, Yasmin Friedmann, Paul Parker, Ian Pallister
INTRODUCTION: Unstable pelvic fractures can be life-threatening due to catastrophic haemorrhage. Non-invasive methods of reducing and stabilising these injuries include pelvic binder application and also lower limb bandaging over a knee-flexion bolster. Both of these methods help close the pelvic ring and should tamponade bleeding. This study aimed to quantify the intra-pelvic pressure changes that occurred with 3 different manoeuvres: lower limb bandaging over a bolster; a Trauma Pelvic Orthotic Device (T-POD) pelvic binder, and a combination of both...
April 2017: Injury
https://www.readbyqxmd.com/read/28255122/-treatment-of-lumbar-sagittal-split-fracture-with-combined-anterior-and-posterior-short-segment-fixation-and-fusion
#17
Fei Chen, Yijun Kang, Bin Zhou, Zhehao Dai
To evaluate the efficacy and safety of combined anterior and posterior short segment fixation and fusion for lumbar sagittal split fracture.
 Methods: From March, 2005 to May, 2013, 13 patients of lumbar sagittal split fracture underwent short segment posterior fixation and anterior fusion. Preoperative and postoperative kyphotic Cobb's angle, visual analogue scale (VAS) score of back pain, Oswestry disability index (ODI), as well as the incidence of complication were accessed.
 Results: Mean follow-up duration was 42 months (24-60 months)...
February 28, 2017: Zhong Nan da Xue Xue Bao. Yi Xue Ban, Journal of Central South University. Medical Sciences
https://www.readbyqxmd.com/read/28243364/biomechanical-assessment-of-stabilization-of-simulated-type-ii-odontoid-fracture-with-case-study
#18
Roy T Daniel, Mir M Hussain, Noelle Klocke, Soumya S Yandamuri, Lukas Bobinski, John M Duff, Brandon S Bucklen
STUDY DESIGN: Researchers created a proper type II dens fracture (DF) and quantified a novel current posterior fixation technique with spacers at C1-C2. A clinical case study supplements this biomechanical analysis. PURPOSE: Researchers explored their hypothesis that spacers combined with posterior instrumentation (PI) reduce range of motion significantly, possibly leading to better fusion outcomes. OVERVIEW OF LITERATURE: Literature shows that the atlantoaxial joint is unique in allowing segmental rotary motion, enabling head turning...
February 2017: Asian Spine Journal
https://www.readbyqxmd.com/read/28220822/pulmonary-outcomes-following-specialized-respiratory-management-for-acute-cervical-spinal-cord-injury-a-retrospective-analysis
#19
E C Zakrasek, J L Nielson, J J Kosarchuk, J D Crew, A R Ferguson, S L McKenna
STUDY DESIGN: Retrospective analysis. OBJECTIVES: To identify multivariate interactions of respiratory function that are sensitive to spinal cord injury level and pharmacological treatment to promote strategies that increase successful liberation from mechanical ventilation. SETTING: United States regional spinal cord injury (SCI) treatment center. METHODS: Retrospective chart review of patients consecutively admitted to Santa Clara Valley Medical Center between May 2013 and December 2014 for ventilator weaning with C1-C5 American Spinal Injury Association Impairment Scale (AIS) A or B SCI, <3 months from injury and who had a tracheostomy in place...
June 2017: Spinal Cord
https://www.readbyqxmd.com/read/28204927/bicortical-facet-screws-as-a-new-option-for-posterior-c2-fixation-anatomical-study-and-clinical-experience
#20
Angelo Rusconi, E Freitas-Olim, P Coloma, R Messerer, C Barrey
PURPOSE: C2 fixation is a demanding procedure, particularly in patients with variants of C1-C2 anatomy. The inferior articular process (IAP) of the axis can be an alternative for screw placement. We report the results of a CT study of C2 IAP anatomy and we present the clinical experience of 28 patients operated with this technique. METHODS: Anatomical study: 50 CT angiographies of the vertebral arteries (VA) were used for this study and, therefore, 100 IAPs were considered...
February 15, 2017: European Spine Journal
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