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Cervical Degeneration

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https://www.readbyqxmd.com/read/28719825/degeneration-of-the-vestibular-nerve-in-unilateral-meniere-s-disease-evaluated-by-galvanic-vestibular-evoked-myogenic-potentials
#1
Chih-Ming Chang, Yi-Ho Young, Fu-Shan Jaw, Chi-Te Wang, Po-Wen Cheng
OBJECTIVE: The staging system of Meniere's disease utilizes audiograms to probe cochlear dysfunction. We explored the addition of galvanic vestibular-evoked myogenic potentials (VEMP) to further explore vestibular function. METHODS: Seventy patients with unilateral Meniere's disease were enrolled in this study. Within 2weeks of diagnosis, all subjects underwent pure tone audiometry, cervical and ocular VEMP, and caloric test. The prevalence of abnormal tests and the VEMP characteristic parameters such as latencies and amplitudes were analyzed...
June 19, 2017: Clinical Neurophysiology: Official Journal of the International Federation of Clinical Neurophysiology
https://www.readbyqxmd.com/read/28713050/the-biomechanical-impact-of-the-facet-tropism-on-the-intervertebral-disc-and-facet-joints-in-the-cervical-spine
#2
Xin Rong, Beiyu Wang, Chen Ding, Yuxiao Deng, Hua Chen, Yang Meng, Weijie Yan, Hao Liu
BACKGROUND CONTEXT: The facet tropism is defined as the angular difference between the left and right facet orientation. The facet tropism was suggested to be associated with the disc degeneration and facet degeneration in the lumbar spine. However, little is known about the relationship between the facet tropism and pathological changes in the cervical spine and the mechanism behind. PURPOSE: This study was conducted to investigate the biomechanical impact of the facet tropism on the intervertebral disc and facet joints...
July 13, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28678112/prosthesis-and-hybrid-strategy-consideration-for-treating-2-level-cervical-disc-degeneration-in-hybrid-surgery
#3
Yang Li, Guy R Fogel, Zhenhua Liao, Rajnesh Tyagi, Weiqiang Liu
STUDY DESIGN: Biomechanical analysis using a validated nonlinear finite element (FE) model. OBJECTIVE: To combine the strategy of two-level hybrid surgery (HS) to explore how prostheses affect cervical biomechanics. SUMMARY OF BACKGROUND DATA: Few FE studies have explored differences in biomechanical behavior between combined and stand-alone structured prostheses with HS. No FE studies have considered whether the prosthesis type and hybrid strategy influence two-level HS...
July 3, 2017: Spine
https://www.readbyqxmd.com/read/28676980/clinical-and-radiological-outcome-at-10-years-of-follow-up-after-total-cervical-disc-replacement
#4
Christoph Mehren, Franziska Heider, Christoph J Siepe, Bernhard Zillner, Ralph Kothe, Andreas Korge, H Michael Mayer
PURPOSE: Previous studies have demonstrated that total cervical disc replacement (cTDR) represents a viable treatment alternative to the 'gold standard' anterior cervical discectomy and fusion for the treatment of well-defined cervical pathologies at short- and mid-term follow-up (FU). However, the implementation and acceptance of a non-fusion philosophy is closely associated with its avoidance of adjacent segment degeneration. Proof of the functional sustainability and clinical improvement of symptoms at long-term FU is still pending...
July 4, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28669454/neurophysiological-studies-on-atypical-parkinsonian-syndromes
#5
REVIEW
Matteo Bologna, Antonio Suppa, Flavio Di Stasio, Antonella Conte, Giovanni Fabbrini, Alfredo Berardelli
There have been a relatively large number of experimental investigations using neurophysiological techniques in patients with atypical parkinsonian syndromes (APs), including progressive supranuclear palsy, cortico-basal syndrome and multiple system atrophy. Earlier studies focused on the startle, blink and trigemino-cervical reflexes and showed several brainstem abnormalities. Studies using transcranial magnetic stimulation have revealed a number of abnormalities in primary motor cortex and inter-hemispheric connectivity...
June 27, 2017: Parkinsonism & related Disorders
https://www.readbyqxmd.com/read/28652978/occipital-condylar-dysplasia-in-a-jacob-lamb-ovis-aries
#6
Alison M Lee, Nicola F Fletcher, Conor Rowan, And Hanne Jahns
Jacob sheep (Ovis aries) are a pedigree breed known for their "polycerate" (multihorned) phenotype. We describe a four-horned Jacob lamb that exhibited progressive congenital hindlimb ataxia and paresis, and was euthanased four weeks post-partum. Necropsy and CT-scan revealed deformity and asymmetry of the occipital condyles, causing narrowing of the foramen magnum and spinal cord compression. Histopathology demonstrated Wallerian degeneration of the cervical spinal cord at the level of the foramen magnum. These findings are consistent with occipital condylar dysplasia...
2017: Open veterinary journal
https://www.readbyqxmd.com/read/28625479/the-change-of-adjacent-segment-after-cervical-disc-arthroplasty-compared-with-anterior-cervical-discectomy-and-fusion-a-meta-analysis-of-randomized-controlled-trials
#7
REVIEW
Liang Dong, Zhengwei Xu, Xiujin Chen, Dongqi Wang, Dichen Li, Tuanjing Liu, Dingjun Hao
BACKGROUD CONTEXT: Many meta-analyses have been performed to study the efficacy of cervical disc arthroplasty (CDA) compared with anterior cervical discectomy and fusion (ACDF); however, there are few data referring to adjacent segment within these meta-analyses, or investigators are unable to arrive at the same conclusion in the few meta-analyses about adjacent segment. With the increased concerns surrounding adjacent segment degeneration (ASDeg) and adjacent segment disease (ASDis) after anterior cervical surgery, it is necessary to perform a comprehensive meta-analysis to analyze adjacent segment parameters...
June 15, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28622494/laryngeal-neuropathy-in-adult-goats-with-copper-deficiency
#8
R F A Sousa, V M Almeida, J E Neto, C W A Nascimento, G X Medeiros, R M T Medeiros, F Riet-Correa, F S Mendonça
The aim of this study was to elucidate the cause of a neurological syndrome characterized by stridor in adult goats with clinical signs of copper deficiency. The main clinical signs consisted of apathy, emaciation, pale mucous membranes, mucous nasal discharge, dyspnea, severe achromotrichia, diffuse alopecia, torpor, ataxia, and stridor. When the goats were forced to move, the stridor increased. In a herd of 194 Toggenburg goats, 10 adult goats with clinical signs of copper deficiency were removed from the herd and divided into 2 groups: group 1, which consisted of 4 nannies and 1 buck with stridor, and group 2, which consisted of 4 nannies and 1 buck without stridor...
July 2017: Veterinary Pathology
https://www.readbyqxmd.com/read/28622185/a-comprehensive-meta-analysis-of-the-adjacent-segment-parameters-in-cervical-disk-arthroplasty-versus-anterior-cervical-discectomy-and-fusion
#9
Liang Dong, Dongqi Wang, Xiujin Chen, Tuanjing Liu, Zhengwei Xu, Mingsheng Tan, Dingjun Hao
STUDY DESIGN: This is a meta-analysis of controlled trials. OBJECTIVE: To assess the overall condition of adjacent segment of cervical disk arthroplasty (CDA) compared with anterior cervical discectomy and fusion (ACDF). SUMMARY OF BACKGROUND DATA: With the increase in CDA and ACDF, surgeons are taking more attention to adjacent segment degeneration (ASDeg) and adjacent segment disease (ASDis). There are more and more meta-analyses comparing the efficacy of CDA with ACDF, however, there are few meta-analyses referring to adjacent segment parameters, and investigators are still unable to arrive at the same conclusion...
June 15, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28606605/cervical-and-thoracic-intervertebral-disc-hydration-increases-with-recumbency-a-study-in-101-healthy-volunteers
#10
Daniel L Belavy, Matthew Quittner, Yuan Ling, David Connell, Timo Rantalainen
BACKGROUND CONTEXT: Variation in the water content and the size of lumbar intervertebral discs (IVDs) is known to occur because of recumbency and has been associated with lumbar IVD herniation risk through the impact of IVD hydration on tissue mechanical properties. It is not clear if similar changes in cervical or thoracic IVDs occur with recumbency. PURPOSE: The aim of this study was to determine whether increases in hydration of thoracic and cervical IVDs occur with short-duration recumbency...
June 9, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28604508/symptomatic-adjacent-segment-disease-after-anterior-cervical-discectomy-for-single-level-degenerative-disk-disease
#11
Roland D Donk, Wim I M Verhagen, Allard J F Hosman, Andre Verbeek, Ronald H M A Bartels
STUDY DESIGN: A prospective cohort of 142 patients underwent either anterior cervical discectomy alone, anterior cervical discectomy with fusion by cage stand-alone, or anterior cervical discectomy with arthroplasty. We then followed up on their condition for a mean of 9.1±1.9 years (5.6-12.2 y) later. OBJECTIVE: We aimed to evaluate the annual rate of clinically symptomatic adjacent segment disease (ASD) and to analyze predictive factors. SUMMARY OF BACKGROUND DATA: Until recent, ASD has been predominantly evaluated radiologically...
June 9, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28604488/anterior-cervical-discectomy-and-fusion-outcomes-over-10-years-a-prospective-study
#12
Glenn R Buttermann
STUDY DESIGN: Prospective cohort study with >10-year follow-up. OBJECTIVE: To assess the long-term, >10-year, clinical outcomes of anterior cervical discectomy and fusion (ACDF) and to compare outcomes based on primary diagnosis of disc herniation; stenosis or advanced degenerative disc disease (DDD); number of levels treated; and preexisting adjacent level degeneration. SUMMARY OF BACKGROUND DATA: ACDF is a proven treatment for patients with stenosis and disc herniation and results in significantly improved short- and intermediate-term outcomes...
June 9, 2017: Spine
https://www.readbyqxmd.com/read/28603486/comparison-of-sirtuin-3-levels-in-als-and-huntington-s-disease-differential-effects-in-human-tissue-samples-vs-transgenic-mouse-models
#13
Eva Buck, Hanna Bayer, Katrin S Lindenberg, Johannes Hanselmann, Noemi Pasquarelli, Albert C Ludolph, Patrick Weydt, Anke Witting
Neurodegenerative diseases are characterized by distinct patterns of neuronal loss. In amyotrophic lateral sclerosis (ALS) upper and lower motoneurons degenerate whereas in Huntington's disease (HD) medium spiny neurons in the striatum are preferentially affected. Despite these differences the pathophysiological mechanisms and risk factors are remarkably similar. In addition, non-neuronal features, such as weight loss implicate a dysregulation in energy metabolism. Mammalian sirtuins, especially the mitochondrial NAD+ dependent sirtuin 3 (SIRT3), regulate mitochondrial function and aging processes...
2017: Frontiers in Molecular Neuroscience
https://www.readbyqxmd.com/read/28597366/finite-element-model-predicts-the-biomechanical-performance-of-cervical-disc-replacement-and-fusion-hybrid-surgery-with-various-geometry-of-ball-and-socket-artificial-disc
#14
Yang Li, Guy R Fogel, Zhenhua Liao, Weiqiang Liu
PURPOSE: Few finite element studies have investigated changes in cervical biomechanics with various prosthesis design parameters using hybrid surgery (HS), and none have investigated those combined different HS strategies. The aim of our study was to investigate the effect of ball-and-socket prosthesis geometry on the biomechanical performance of the cervical spine combined with two HS constructs. METHODS: Two HS strategies were conducted: (1) ACDF at C4-C5 and anterior cervical disc replacement (ACDR) at C5-C6 (ACDF/ACDR), and (2) ACDR/ACDF...
June 8, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28597208/subject-specific-regional-measures-of-water-diffusion-are-associated-with-impairment-in-chronic-spinal-cord-injury
#15
Ann S Choe, Cristina L Sadowsky, Seth A Smith, Peter C M van Zijl, James J Pekar, Visar Belegu
PURPOSE: We aimed to identify non-invasive imaging parameters that can serve as biomarkers for the integrity of the spinal cord, which is paramount to neurological function. Diffusion tensor imaging (DTI) indices are sensitive to axonal and myelin damage, and have strong potential to serve as such biomarkers. However, averaging DTI indices over large regions of interest (ROIs), a common approach to analyzing the images of injured spinal cord, leads to loss of subject-specific information...
June 8, 2017: Neuroradiology
https://www.readbyqxmd.com/read/28591781/global-spinal-alignment-in-cervical-kyphotic-deformity-the-importance-of-head-position-and-thoracolumbar-alignment-in-the-compensatory-mechanism
#16
Jun Mizutani, Kushagra Verma, Kenji Endo, Ken Ishii, Kuniyoshi Abumi, Mitsuru Yagi, Naobumi Hosogane, Jeffrey Yang, Bobby Tay, Vedat Deviren, Christopher Ames
BACKGROUND: Previous studies have evaluated cervical kyphosis (C-kypho) using cervical curvature or chin-brow vertical angle, but the relationship between C-kypho and global spinal alignment is currently unknown. OBJECTIVE: To elucidate global spinal alignment and compensatory mechanisms in primary symptomatic C-kypho using full-spine radiography. METHODS: In this retrospective multicenter study, symptomatic primary C-kypho patients (Cerv group; n = 103) and adult thoracolumbar deformity patients (TL group; n = 119) were compared...
June 7, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28591077/progressive-bone-formation-after-cervical-disc-replacement-minimum-of-5-year-follow-up
#17
Feifei Zhou, Kevin L Ju, Yanbin Zhao, Fengshan Zhang, Shengfa Pan, John G Heller, Yu Sun
OBJECTIVE: Our objective was to examine the prevalence, clinical significance, ramifications, and possible etiology of postoperative bone formation at the index level after Cervical Disc Replacement (CDR) with a minimum of five years of follow-up. SUMMARY OF BACKGROUND DATA: CDR can be complicated by postoperative ossification and unwanted ankylosis at the index level, which some authors have termed "heterotopic ossification". This terminology may be inaccurate as it assumes the postoperative bone formation is unnatural and a consequence of the CDR surgery...
June 6, 2017: Spine
https://www.readbyqxmd.com/read/28584675/musculoskeletal-neck-pain-in-children-and-adolescents-risk-factors-and-complications
#18
Jawad Fares, Mohamad Y Fares, Youssef Fares
BACKGROUND: Neck pain is a major public health concern that has been extensively studied in adults but not in children and adolescents. Therefore, the purpose of this article is to explore musculoskeletal neck pain in children and adolescents, as well as to discuss its possible risk factors and complications. METHODS: Participants were patients under 18 years of age, who had presented to the clinic (Beirut, Lebanon) in 2015, with nonspecific neck pain. They were examined and asked to evaluate and localize the pain...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28575461/adjacent-segment-degeneration-after-anterior-cervical-discectomy-and-fusion-with-an-autologous-iliac-crest-graft-a-magnetic-resonance-imaging-study-of-59-patients-with-a-mean-follow-up-of-27%C3%A2-yr
#19
Benedikt W Burkhardt, Andreas Simgen, Gudrun Wagenpfeil, Wolfgang Reith, Joachim M Oertel
BACKGROUND: Anterior cervical decompression and fusion (ACDF) is a widely accepted surgical technique for the treatment of degenerative disc disease. ACDF is associated with adjacent segment degeneration (ASD). OBJECTIVE: To assess whether physiological aging of the spine would overcome ASD by comparing adjacent to adjoining segments more than 18 yr after ACDF. METHODS: Magnetic resonance imaging of 59 (36 male, 23 female) patients who underwent ACDF was performed to assess degeneration...
May 30, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28574978/adjacent-segment-degeneration-following-anterior-cervical-discectomy-and-fusion-versus-the-bryan-cervical-disc-arthroplasty
#20
Suo-Zhou Yan, Jun Di, Yong Shen
BACKGROUND Anterior cervical discectomy and fusion (ACDF) is an established treatment for degenerative disease of the cervical disc, but adjacent segment degeneration or instability may develop long term. The aim of this study was to investigate the risk factors for adjacent segment degeneration following ACDF compared with the use of the Bryan artificial disc for cervical disc arthroplasty (CDA). MATERIAL AND METHODS A prospective comparative study included 93 patients who underwent ACDF or CDA with the Bryan artificial cervical disc between 2002 and 2004, and who had more than eight years of follow-up...
June 2, 2017: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
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