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https://www.readbyqxmd.com/read/27890763/positional-occlusion-of-vertebral-artery-due-to-cervical-spondylosis-as-rare-cause-of-wake-up-stroke-report-of-2-cases
#1
Hirofumi Nishikawa, Fumitaka Miya, Yotaro Kitano, Genshin Mori, Shigetoshi Shimizu, Hidenori Suzuki
BACKGROUND: Positional compression of the vertebral artery (VA) due to cervical spondylosis is an uncommon cause of stroke. We report two cases of cervical spondylosis causing wake-up stroke, which is extremely rare. CASE DESCRIPTION: The first case was a 78-year-old woman who presented with vertigo and vomiting lasting from waking up. Magnetic resonance (MR) images and angiography documented right cerebellar infarction, and stenosis of the right cervical VA. Dynamic angiography revealed that the right VA was occluded when her neck was extended or rotated to the right...
November 24, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27644323/incidence-and-risk-factors-of-axial-symptoms-after-cervical-disc-arthroplasty-a-minimum-5-year-follow-up-study
#2
Jing Chen, Jia Li, Gang Qiu, Jingchao Wei, Yanfen Qiu, Yonghui An, Yong Shen
BACKGROUND: The purpose of this study was to investigate whether uncovertebral joint ossification was a risk factor for axial symptoms (AS) after cervical disc arthroplasty (CDA). METHODS: This retrospective study included 52 consecutive patients who underwent CDA for single-level cervical disc disease. To examine possible risk factors for AS after CDA, univariate and multivariate logistic regression analyses were conducted to compare data from the patients with and without AS (the AS and no-AS groups, respectively)...
2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27457429/resection-or-degeneration-of-uncovertebral-joints-altered-the-segmental-kinematics-and-load-sharing-pattern-of-subaxial-cervical-spine-a-biomechanical-investigation-using-a-c2-t1-finite-element-model
#3
Zhong Wang, Hui Zhao, Ji-Ming Liu, Li-Wen Tan, Peng Liu, Jian-Hua Zhao
The uncovertebral joint (UJ) is an important load-bearing structure in the subaxial cervical spine (SCS) and the medial wall of the intervertebral foramen (IVF). To investigate the UJ׳s role in load distribution and transmission under physiological loading, we developed and validated a detailed finite element model (C2-T1). Based on the initial model, two additional models were modified to simulate surgical resection and degeneration of UJs, to evaluate their influence on SCS kinematics and load distribution...
September 6, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27018905/anterior-facetectomy-for-reduction-of-cervical-facet-dislocation
#4
Zhengfeng Zhang, Chao Liu, Ziping Mu, Honggang Wang, Lei Shangguan, Chao Zhang, Jie Li, Wenjie Zheng
STUDY DESIGN: Technique report and case series. OBJECTIVE: The aim of this study was to develop a new surgical technique for anterior reduction in management of unilateral/bilateral facet dislocations and to report the results of 8 patients with successful outcomes associated with this approach. SUMMARY OF BACKGROUND DATA: The anterior-only surgical procedure, including discectomy, open reduction, fusion, and fixation, is a recommended approach in the treatment of cervical facet dislocations...
April 2016: Spine
https://www.readbyqxmd.com/read/26949033/persistent-axial-neck-pain-after-cervical-disc-arthroplasty-a-radiographic-analysis
#5
Scott C Wagner, Peter M Formby, Daniel G Kang, Gregory S Van Blarcum, John P Cody, Robert W Tracey, Ronald A Lehman
BACKGROUND CONTEXT: There is very little literature examining optimal radiographic parameters for placement of cervical disc arthroplasty (CDA), nor is there substantial evidence evaluating the relationship between persistent postoperative neck pain and radiographic outcomes. PURPOSE: We set out to perform a single-center evaluation of the radiographic outcomes, including associated complications, of CDA. DESIGN: This is a retrospective review...
July 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/26904960/anatomical-specificities-of-the-degenerated-cervical-spine-a-narrative-review-of-clinical-implications-with-special-focus-on-targeted-spinal-injections
#6
REVIEW
Christelle Nguyen, Katherine Sanchez, Alexandra Roren, Clémence Palazzo, Laëtitia Falcou, Jean-Luc Drapé, François Rannou, Serge Poiraudeau, Marie-Martine Lefèvre-Colau
BACKGROUND: Cervical radiculopathy is most often related to foraminal stenosis due to osteoarthritic changes of the uncovertebral joints anteriorly or zygapophyseal joints posteriorly, rather than disc herniation. OBJECTIVES: To describe anatomical specificities of the degenerated cervical spine. METHODS: A critical narrative review was conducted. Articles were non-systematically selected and based on authors' expertise, self-knowledge, and reflective practice...
September 2016: Annals of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/26536438/risks-for-vascular-injury-during-anterior-cervical-spine-surgery-prevalence-of-a-medial-loop-of-vertebral-artery-and-internal-carotid-artery
#7
Norimitsu Wakao, Mikinobu Takeuchi, Manabu Nishimura, K Daniel Riew, Mitsuhiro Kamiya, Atsuhiko Hirasawa, Shiro Imagama, Katsuhisa Kawanami, Kenta Murotani, Masakazu Takayasu
STUDY DESIGN: Observational study using a retrospective single-institute database. OBJECTIVE: To investigate the prevalence of a medial loop (ML) of the vertebral artery (VA) and internal carotid artery (ICA), which might be an anatomical risk factor for arterial injury in anterior cervical surgeries. SUMMARY OF BACKGROUND DATA: Anterior cervical spine surgeries are generally considered to be safe and effective. VA injury is one of the most serious complications during anterior procedures...
February 2016: Spine
https://www.readbyqxmd.com/read/26282105/influence-of-graft-size-on-spinal-instability-with-anterior-cervical-plate-fixation-following-in-vitro-flexion-distraction-injuries
#8
Reina Yao, Stewart D McLachlin, Parham Rasoulinejad, Kevin R Gurr, Fawaz Siddiqi, Cynthia E Dunning, Christopher S Bailey
BACKGROUND CONTEXT: Anterior cervical discectomy and fusion with plating (ACDFP) is commonly used for the treatment of distractive-flexion cervical spine injuries. Despite the prevalence of ACDFP, there is little biomechanical evidence for graft height selection in the unstable trauma scenario. PURPOSE: This study aimed to investigate whether changes in graft height affect the kinematics of instrumented ACDFP C5-C6 motion segments in the context of varying degrees of simulated facet injuries...
April 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/24453021/anatomy-and-clinical-significance-of-the-uncinate-process-and-uncovertebral-joint-a-comprehensive-review
#9
REVIEW
Jeffrey Hartman
INTRODUCTION: The uncinate process and its associated uncovertebral articulation are features unique to the cervical spine. This review examines the morphology of these unique structures with particular emphasis on the regional anatomy, development and clinical significance. MATERIALS AND METHODS: Five electronic databases were utilized in the literature search and additional relevant citations were retrieved from the references. A total of 74 citations were included for review...
April 2014: Clinical Anatomy
https://www.readbyqxmd.com/read/24353946/uncovertebral-anatomic-midline-targeting-for-cervical-disc-arthroplasty
#10
Drew A Bednar
Study Design Prospective observational cohort. Objective To document the accuracy of uncovertebral anatomic targeting in positioning cervical disc arthroplasty. Summary of Background Data Disc arthroplasty implants depend on midline placement for optimum mechanical function. Fluoroscopy is used to delineate the midline. Anatomic targeting from the uncovertebral joints in the neck may be adequate. We have investigated the efficacy of uncovertebral anatomic targeting for cervical disc arthroplasty. Methods Anatomic uncovertebral midline targeting for disc arthroplasty insertion was performed in 18 male (mean age 51 years, range 27 to 67) and 22 female (mean age 50, range 35 to 70) patients receiving a total of 59 implants over a 5-year period...
March 2012: Global Spine Journal
https://www.readbyqxmd.com/read/24000075/cervical-spondylosis-a-rare-and-curable-cause-of-vertebrobasilar-insufficiency
#11
Daniel J Denis, Daniel Shedid, Mohammad Shehadeh, Alexander G Weil, Sylvain Lanthier
BACKGROUND: Spondylotic vertebral artery (VA) compression is a rare cause of vertebrobasilar insufficiency and stroke. CASE DESCRIPTION: A 53-year-old man experienced multiple brief vertebrobasilar transient ischemic attacks (TIAs) and strokes, not apparently triggered by neck movements. Brain magnetic resonance imaging (MRI) documented consecutive infarcts, first in the left then right medial posterior inferior cerebellar artery (PICA) territories. Angiography showed two extracranial right vertebral artery (VA) stenoses, left VA hypoplasia, absence of left PICA and a dominant right PICA...
May 2014: European Spine Journal
https://www.readbyqxmd.com/read/23429312/subaxial-rotational-vertebral-artery-syndrome-resection-of-the-uncinate-process-and-anterior-fusion-can-be-sufficient-case-report-and-review-of-the-literature
#12
Sebastiaan Schelfaut, Skrallan Verhasselt, Karel Carpentier, Lieven Moke
STUDY DESIGN: A case report on rotational vertebral artery syndrome (RVAS) and surgical treatment. OBJECTIVE: To illustrate a safe treatment option of RVAS with diminished risk of iatrogenic damage to the vertebral artery. SUMMARY OF BACKGROUND DATA: RVAS is an uncommon cause of symptomatic transient vertebrobasilar insufficiency induced by physiological head rotation with temporary significant external compression of the dominant subaxial vertebral artery...
March 2015: Journal of Spinal Disorders & Techniques
https://www.readbyqxmd.com/read/23355324/straightened-cervical-lordosis-causes-stress-concentration-a-finite-element-model-study
#13
Wei Wei, Shenhui Liao, Shiyuan Shi, Jun Fei, Yifan Wang, Chunyue Chen
In this study, we propose a finite element analysis of the complete cervical spine with straightened and normal physiological curvature by using a specially designed modelling system. An accurate finite element model is established to recommend plausible approaches to treatment of cervical spondylosis through the finite element analysis results. There are few reports of biomechanics influence of the straightened cervical curve. It is difficult to measure internal responses of cervical spine directly. However, the finite element method has been reported to have the capability to quantify both external and internal responses to mechanical loading, such as the strain and stress distribution of spinal components...
March 2013: Australasian Physical & Engineering Sciences in Medicine
https://www.readbyqxmd.com/read/23256358/-analysis-of-clinical-effects-of-uncovertebral-joints-resection-and-decompression-for-the-treatment-of-cervical-spondylotic-radiculopathy-through-anterior-approach
#14
Jian-Dong Yuan, Xin Chen, Cai-Long Liu, Fan Zhang
OBJECTIVE: To analyze the clinical and radiologic outcomes of bilateral uncovertebral joints resection and decompression in treating cervical spondylotic radiculopathy through anterior approach. METHODS: From January 2007 to December 2009, the clinical data of 56 patients with cervical spondylotic radiculopathy undergoing sugical treatment were retrospectively analyzed. There were 33 males and 23 females with an average age of (58.83 +/- 8.01) years (ranged 41 to 72)...
September 2012: Zhongguo Gu Shang, China Journal of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/23124269/incidence-and-risk-factors-of-the-retropharyngeal-carotid-artery-on-cervical-magnetic-resonance-imaging
#15
Jason Koreckij, Hasham Alvi, Robert Gibly, Eric Pang, Wellington K Hsu
STUDY DESIGN: Retrospective cohort. OBJECTIVE: Define incidence of anomalous carotid vasculature and associated risk factors as pertains to the anterior approach. SUMMARY OF BACKGROUND DATA: The carotid artery system, including the common, internal, and external branches, is lateral to the foramen transversarium. If unrecognized, aberrancies in carotid vessel anatomy can lead to devastating complications. METHODS: A total of 1000 cervical magnetic resonance imagings were screened to localize the carotid artery respective to medial/lateral location of the vessel at each segment from C2-C3 to C6-C7 bilaterally...
January 15, 2013: Spine
https://www.readbyqxmd.com/read/22860876/three-dimensional-motion-of-the-uncovertebral-joint-during-head-rotation
#16
Yukitaka Nagamoto, Takahiro Ishii, Motoki Iwasaki, Hironobu Sakaura, Hisao Moritomo, Takahito Fujimori, Masafumi Kashii, Tsuyoshi Murase, Hideki Yoshikawa, Kazuomi Sugamoto
OBJECT: The uncovertebral joints are peculiar but clinically important anatomical structures of the cervical vertebrae. In the aged or degenerative cervical spine, osteophytes arising from an uncovertebral joint can cause cervical radiculopathy, often necessitating decompression surgery. Although these joints are believed to bear some relationship to head rotation, how the uncovertebral joints work during head rotation remains unclear. The purpose of this study is to elucidate 3D motion of the uncovertebral joints during head rotation...
October 2012: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/22421919/uncovertebral-hypertrophy-is-a-significant-risk-factor-for-the-occurrence-of-heterotopic-ossification-after-cervical-disc-replacement-survivorship-analysis-of-bryan-disc-for-single-level-cervical-arthroplasty
#17
Sang-Bong Chung, Johongir M Muradov, Sun-Ho Lee, Whan Eoh, Eun-Sang Kim
OBJECTIVES: The purpose of this study is to investigate the incidence of heterotopic ossification (HO) in the Bryan cervical arthroplasty group and to identify associations between preoperative factors and the development of HO. METHODS: We performed a retrospective review of clinical and radiological data on patients who underwent single-level cervical arthroplasty with Bryan prosthesis between January 2005 and September 2007. Patients were postoperatively followed-up at 1, 3, 6, 12 months and every year thereafter...
June 2012: Acta Neurochirurgica
https://www.readbyqxmd.com/read/22365284/cerebellar-infarction-originating-from-vertebral-artery-stenosis-caused-by-a-hypertrophied-uncovertebral-joint
#18
Jong Mun Choi, Hyeok Jin Hong, Suk Ki Chang, Sung Han Oh
We report a case of cerebellar infarction originating from vertebral artery stenosis caused by a hypertrophied uncovertebral joint. A 38-year-old man presented with sudden onset of headache, dizziness, and dysarthria. The magnetic resonance imaging scan of the brain revealed acute infarction in the right cerebellar hemisphere in the territory of the posterior inferior cerebellar artery (PICA) and superior cerebellar artery (SCA). Magnetic resonance, 3-dimensional computed tomographic, and conventional angiography revealed severe right vertebral artery stenosis by extrinsic compression of the hypertrophied right C5-C6 uncovertebral joint...
November 2012: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/22264177/analysis-of-the-uncinate-processes-of-the-cervical-spine-an-anatomical-study
#19
R Shane Tubbs, Olivia J Rompala, Ketan Verma, Martin M Mortazavi, Brion Benninger, Marios Loukas, M Rene Chambers
OBJECT: Although the uncovertebral region is neurosurgically relevant, relatively little is reported in the literature, specifically the neurosurgical literature, regarding its anatomy. Therefore, the present study aimed at further elucidation of this region's morphological features. METHODS: Morphometry was performed on the uncinate processes of 40 adult human skeletons. Additionally, range of motion testing was performed, with special attention given to the uncinate processes...
April 2012: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/22028964/oblique-corpectomy-to-manage-cervical-myeloradiculopathy
#20
Chibbaro Salvatore, Makiese Orphee, Bresson Damien, Reiss Alisha, Poczos Pavel, George Bernard
Background. The authors describe a lateral approach to the cervical spine for the management of spondylotic myeloradiculopathy. The rationale for this approach and surgical technique are discussed, as well as the advantages, disadvantages, complications, and pitfalls based on the author's experience over the last two decades. Methods. Spondylotic myelo-radiculopathy may be treated via a lateral approach to the cervical spine when there is predominant anterior compression associated with either spine straightening or kyphosis, but without vertebral instability...
2011: Neurology Research International
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