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C1-2 injuries

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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
#1
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
#2
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
#3
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
#4
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
#5
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...
March 19, 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
#6
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
#7
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
#8
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...
January 17, 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
#9
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...
February 2, 2017: Injury
https://www.readbyqxmd.com/read/28255122/-treatment-of-lumbar-sagittal-split-fracture-with-combined-anterior-and-posterior-short-segment-fixation-and-fusion
#10
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
#11
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
#12
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...
February 21, 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
#13
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
https://www.readbyqxmd.com/read/28195230/epidemiology-of-traumatic-spinal-cord-injury-in-galicia-spain-trends-over-a-20-year-period
#14
A Montoto-Marqués, M E Ferreiro-Velasco, S Salvador-de la Barrera, V Balboa-Barreiro, A Rodriguez-Sotillo, R Meijide-Failde
STUDY DESIGN: Observational study with prospective and retrospective monitoring. OBJECTIVE: To describe the epidemiological and demographic characteristics of traumatic spinal cord injury (TSCI), and to analyze its epidemiological changes. SETTING: Unidad de Lesionados Medulares, Complejo Hospitalario Universitario A Coruña, in Galicia (Spain). METHODS: The study included patients with TSCI who had been hospitalized between January 1995 and December 2014...
February 14, 2017: Spinal Cord
https://www.readbyqxmd.com/read/28168659/btp2-a-store-operated-calcium-channel-inhibitor-attenuates-lung-ischemia-reperfusion-injury-in-rats
#15
Wei Zhang, Zeyou Qi, Yaping Wang
Lung ischemia-reperfusion (I/R) injury is a critical complication following a lung transplant, cardiopulmonary bypass, pulmonary embolism, and trauma. Immune cells and their effector functions are involved in the lung I/R injury. Store-operated calcium channels (SOCC) are highly Ca(2+)-selective cation channels and have crucial effects on the immune system. It has been indicated that BTP2, a potent SOCC blocker, could inhibit pro-inflammatory cytokine production from immune cells both in vitro and in vivo. Therefore, this study was conducted to investigate the beneficial effects of BTP2 on lung I/R injury in Sprague-Dawley (SD) rats...
February 7, 2017: Inflammation
https://www.readbyqxmd.com/read/28149158/effect-of-propofol-on-mitochondrial-atp-content-and-atpase-activity-in-hippocampus-of-rats-with-cerebral-ischemia-reperfusion-injury
#16
Dan-Juan Yu, Hui-Yang Gao
OBJECTIVE: Study on the influence of the cerebral Ischemia-reperfusion Injury (IRI) on mitochondrial adenosine triphosphate (ATP) content and ATPase activity in hippocampus of rats, as well as the protective effect of propofol on IRI in rats. METHODS: A total of 40 male SD rats were randomly divided into 5 groups: sham operation group (Group A), ischemia reperfusion control group (Group B) and ischemic reperfusion with propofol pretreatment group (C group). Group C was further divided into three sub groups according to the different doses of propofol: Group C1 (50 mg/kg), Group C2 (100 mg/kg) and Group C3 (150 mg/kg)...
February 2017: Saudi Journal of Biological Sciences
https://www.readbyqxmd.com/read/28149076/knock-and-drill-technique-a-simple-tips-for-the-instrumentation-in-complex-craniovertebral-junction-anomalies-without-using-fluoroscopy
#17
Arun Srivastava, Jayesh Sardhara, Sanjay Behari, Sindgikar Pavaman, Jeena Joseph, Kuntal Das, Anant Mehrotra, Awadhesh K Jaiswal, Kamlesh Bhaishora
CONTEXT: Existence of complex variable bony and vertebral artery (VA) anomalies at craniovertebral junction (CVJ) in subset of complex CVJ anomalies demands individualized instrumentation policy and placing screws in each bone requires strategic preoperative planning and intraoperative skills. AIM: To evaluate the clinical accuracy of knock and drill (K and D) technique for the screw placement in complex CVJ anomalies. SETTINGS AND DESIGN: Prospective study and operative technical note...
January 2017: Journal of Neurosciences in Rural Practice
https://www.readbyqxmd.com/read/28117618/association-between-abnormal-arterial-stiffness-and-cardiovascular-risk-factors-in-people-with-chronic-spinal-cord-injury
#18
Masae Miyatani, S Mohammad Alavinia, Maggie Szeto, Cameron Moore, B Catharine Craven
Aims To describe the association between cardiovascular risk factors and abnormal arterial stiffness, defined by a carotid-femoral pulse wave velocity ≥ 10 m/s, in patients with chronic spinal cord injury (SCI). Methods Ninety consenting adults with chronic SCI (C1-T10 ASIA Impairment Scale A-D) participated in this cross-sectional study. The cardiovascular risk factors considered included age, sex, duration of injury, neurological level of injury (C1-T1, tetraplegia; T2-T12, paraplegia), age at injury, impairment scale category, supine resting systolic blood pressure, diastolic blood pressure, mean arterial pressure, heart rate, leisure time physical activity, treated hypertension, treated hyperlipidemia, diabetes, lipid profiles, fasting blood glucose, glycated hemoglobin, and C reactive protein...
January 1, 2017: European Journal of Preventive Cardiology
https://www.readbyqxmd.com/read/28106355/comparative-study-of-fiberoptic-guided-versus-intubating-laryngeal-mask-airway-assisted-awake-orotracheal-intubation-in-patients-with-unstable-cervical-spine-a-randomized-controlled-trial
#19
Tanmay Jadhav, Kamath Sriganesh, Madhusudan K Reddy, Dhritiman Chakrabarti
BACKGROUND: A safe airway technique minimizes intubation-associated cervical-spine movement and consequent neurological injury in patients with unstable cervical spine (UCS). Awake fiberoptic-guided intubation (FGI) is preferred in patients with UCS. Alternatively, intubating laryngeal mask airway assisted intubation (ILMA-AI) can be performed both during elective and emergency, requires less expertise and is cost-effective. This study evaluated cervical-spine movement during FGI and ILMA-AI in patients with UCS...
January 20, 2017: Minerva Anestesiologica
https://www.readbyqxmd.com/read/28072744/posterior-arthrodesis-of-c1-c3-for-the-stabilization-of-multiple-unstable-upper-cervical-fractures-with-spinal-cord-compromise-a-case-report-and-literature-review
#20
Deting Xue, Qixin Chen, Gang Chen, Wenhai Zhuo, Fangcai Li
BACKGROUND: Multiple fractures of the atlas and axis are rare. The management of multiple fragment axis fractures and unstable atlas fractures is still challenging for the spinal surgeon. There are no published reports of similar fractures with 3-part fracture of axis associated with an unstable atlas fracture. CASE SUMMARY: We present a patient with concurrent axis and atlas fractures, which have not been reported. The patient suffered hyperextension injury with neck pain and numbness of the bilateral upper extremity associated with weakness after a 2-m fall...
January 2017: Medicine (Baltimore)
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