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https://www.readbyqxmd.com/read/28109098/-impact-of-anterior-cervical-fusion-surgeries-on-adjacent-segments-a-finite-element-analysis
#1
Teng Lu, Ting Zhang, Jun Dong, Quan-Jin Zang, Bao-Hui Yang, Dong Wang, Hao-Peng Li, Xi-Jng He
OBJECTIVE: To investigate the changes in the range of motion (ROM) and stress of the intervertebral disc and facet joint of the adjacent segments following anterior cervical corpectomy and fusion (ACCF) and anterior cervical discectomy and fusion (ACDF) using finite element analysis. METHODS: A three-dimensional finite element model of the lower cervical vertebrae was constructed and validated by comparing the ROM of the finite element model against the published data...
January 20, 2017: Nan Fang Yi Ke da Xue Xue Bao, Journal of Southern Medical University
https://www.readbyqxmd.com/read/28108424/clinical-and-radiological-findings-after-multilevel-cervical-total-disc-replacement-defining-radiological-changes-to-predict-surgical-outcomes
#2
Jung Hwan Lee, Sang-Ho Lee, Jun Ho Lee
OBJECTIVE: This study compared the radiological parameters between preoperation and postoperation for patients who underwent multilevel cervical total disc replacement (MCTDR) and assessed which parameters were related to successful clinical outcomes after MCTDR. METHODS: The study included a consecutive series of 24 patients who were treated with MCTDR following the diagnosis of multilevel cervical disc herniation or stenosis. Numeric Rating Scale (NRS), C2-7 sagittal vertical axis (SVA), range of motion (ROM) of C2-7 segment and TDR implanted levels were evaluated at pre- and post-TDR...
January 17, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28104459/validation-of-the-intervertebral-disc-histological-degeneration-score-in-cervical-intervertebral-discs-and-their-endplates
#3
Krzysztof A Tomaszewski, Brandon Michael Henry, Tomasz Gładysz, Roman Głowacki, Jerzy A Walocha, Romana Tomaszewska
BACKGROUND CONTEXT: Vertebral joints consist of intervertebral discs (IVDs) and cartilaginous endplates (EP) that lie superiorly and inferiorly to the IVDs and separate them from the adjacent vertebral bodies. With ageing, both IVDs and EPs undergo degeneration. The Histologic Degeneration Score (HDS) is a grading system which microscopically evaluates the degree of degeneration in lumbar discs and predicts it with high accuracy basing on several histological markers of IVD and EP. There is currently a lack of validated histologic grading schemes for cervical spine degeneration...
January 16, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28097935/finite-element-simulations-of-the-head-brain-responses-to-the-top-impacts-of-a-construction-helmet-effects-of-the-neck-and-body-mass
#4
John Z Wu, Christopher S Pan, Bryan M Wimer, Charles L Rosen
Traumatic brain injuries are among the most common severely disabling injuries in the United States. Construction helmets are considered essential personal protective equipment for reducing traumatic brain injury risks at work sites. In this study, we proposed a practical finite element modeling approach that would be suitable for engineers to optimize construction helmet design. The finite element model includes all essential anatomical structures of a human head (i.e. skin, scalp, skull, cerebrospinal fluid, brain, medulla, spinal cord, cervical vertebrae, and discs) and all major engineering components of a construction helmet (i...
January 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28097889/titanium-cages-versus-autogenous-iliac-crest-bone-grafts-in-anterior-cervical-discectomy-and-fusion-treatment-of-patients-with-cervical-degenerative-diseases-a-systematic-review-and-meta-analysis
#5
Ming-Hao Shao, Fan Zhang, Jun Yin, Hao-Cheng Xu, Fei-Zhou Lyu
OBJECTIVE: A systematic review and partial meta-analysis is conducted to compare the efficacy and safety of anterior cervical decompression and fusion procedures employing either rectangular titanium cages or iliac crest autografts in patients suffering from cervical degenerative disc diseases. METHODS: Medline, PubMed, CENTRAL, and Google Scholar databases were searched until June 2015, using keywords cervical discectomy; bone transplantation; titanium cages; iliac crest autografts...
January 18, 2017: Current Medical Research and Opinion
https://www.readbyqxmd.com/read/28097260/arthroplasty-in-cervical-degenerative-disc-disease-fulfilling-its-long-term-promise
#6
EDITORIAL
Toon F M Boselie, Henk van Santbrink
No abstract text is available yet for this article.
December 2016: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/28097258/editorial-on-long-term-clinical-outcomes-of-cervical-disc-arthroplasty-a-prospective-randomized-controlled-trial-by-sasso-et-al
#7
EDITORIAL
Heeren S Makanji, Kenneth Nwosu, Christopher M Bono
No abstract text is available yet for this article.
December 2016: Journal of Spine Surgery (Hong Kong)
https://www.readbyqxmd.com/read/28096586/comparison-of-intubating-laryngeal-mask-airway-and-fiberoptic-bronchoscopy-for-endotracheal-intubation-in-patients-undergoing-cervical-discectomy
#8
Kolli S Chalam, Jyothi Gupta
BACKGROUND AND AIMS: Direct laryngoscopy is hazardous in patients with cervical posterior intervertebral disc prolapse (PIVD) as it may worsen the existing cord compression. To achieve smooth intubation, many adjuncts such as fiberoptic bronchoscope (FOB), video laryngoscopes, lighted stylets, and intubating laryngeal mask airways (ILMAs) are available. However, there is a paucity of literature comparing ILMA with fiberoptic intubation in patients with PIVD. Hence, this study was designed to compare the effectiveness of ILMA technique with FOB to accomplish endotracheal intubation in patients undergoing cervical discectomy...
October 2016: Journal of Anaesthesiology, Clinical Pharmacology
https://www.readbyqxmd.com/read/28079682/comparing-short-term-complications-of-inpatient-versus-outpatient-single-level-anterior-cervical-discectomy-and-fusion-an-analysis-of-6940-patients-using-the-acs-nsqip-database
#9
Ryan Khanna, Robert B Kim, Sandi K Lam, George R Cybulski, Zachary A Smith, Nader S Dahdaleh
STUDY DESIGN: Multicenter propensity score-adjusted retrospective cohort study. OBJECTIVE: To determine baseline 30-day complication rates for anterior cervical discectomy and fusion (ACDF) and compare clinical complications for patients undergoing single-level ACDFs between inpatient and outpatient settings. SUMMARY OF BACKGROUND DATA: ACDF remains the most common procedure in the treatment of a variety of cervical disc pathologies, making it a focus of quality improvement initiatives...
January 10, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28061490/comparative-analysis-between-total-disc-replacement-and-posterior-foraminotomy-for-posterolateral-soft-disc-herniation-with-unilateral-radiculopathy-clinical-and-biomechanical-results-of-a-minimum-5-years-follow-up
#10
Kyoung-Tae Kim, Dae-Chul Cho, Joo-Kyung Sung, Young-Baeg Kim, Du Hwan Kim
OBJECTIVE: To compare the clinical outcomes and biomechanical effects of total disc replacement (TDR) and posterior cervical foraminotomy (PCF) and to propose relative inclusion criteria. METHODS: Thirty-five patients who underwent surgery between 2006 and 2008 were included. All patients had single-level disease and only radiculopathy. The overall sagittal balance and angle and height of a functional segmental unit (FSU; upper and lower vertebral body of the operative lesion) were assessed by preoperative and follow-up radiographs...
January 1, 2017: Journal of Korean Neurosurgical Society
https://www.readbyqxmd.com/read/28058626/erratum-to-reoperation-after-cervical-disc-arthroplasty-versus-anterior-cervical-discectomy-and-fusion-a-meta-analysis
#11
Zhao-Ming Zhong, Shi-Yuan Zhu, Jing-Shen Zhuang, Qian Wu, Jian-Ting Chen
No abstract text is available yet for this article.
January 5, 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28057652/study-protocol-for-a-randomised-controlled-multicentre-study-the-foraminotomy-acdf-cost-effectiveness-trial-facet-in-patients-with-cervical-radiculopathy
#12
A E H Broekema, J M A Kuijlen, G A T Lesman-Leegte, R H M A Bartels, A D I van Asselt, P C A J Vroomen, J M C van Dijk, M F Reneman, R Soer, R J M Groen
INTRODUCTION: Cervical radiculopathy due to discogenic or spondylotic stenosis of the neuroforamen can be surgically treated by an anterior discectomy with fusion (ACDF) or a posterior foraminotomy (FOR). Most surgeons prefer ACDF, although there are indications that FOR is as effective as ACDF, has a lower complication rate and is less expensive. A head-to-head comparison of the 2 surgical techniques in a randomised controlled trial has not yet been performed. The study objectives of the Foraminotomy ACDF Cost-Effectiveness Trial (FACET) study are to compare clinical outcomes, complication rates and cost-effectiveness of FOR to ACDF...
January 5, 2017: BMJ Open
https://www.readbyqxmd.com/read/28053621/clinical-and-magnetic-resonance-imaging-features-of-compressive-cervical-myelopathy-with-traumatic-intervertebral-disc-herniation-in-cynomolgus-macaque-macaca-fascicularis
#13
Yun-Jung Choi, Hye-Jin Park, Chul-Ho Sohn, Kyeong Cheon Jung, Seong Hoe Park, Jae-Il Lee
Intervertebral disc herniation (IVDH) with nucleus pulposus extrusion, traumatic or not, is a devastating clinical condition accompanied by neurological problems. Here we report a cynomolgus macaque suffering from acute and progressive neurological dysfunction by a blunt trauma due to neck collar, an animal handling device. Tetraplegia, urinary incontinence, decreased proprioception, and imperception of pain were shown on physical and neurological examinations. MRI sagittal T2 weighted sequences revealed an extensive protrusion of disc material between C2 and C3 cervical vertebra, and this protrusion resulted in central stenosis of the spinal cord...
December 2016: Laboratory Animal Research
https://www.readbyqxmd.com/read/28042726/hybrid-cervical-disc-arthroplasty
#14
Tsung-Hsi Tu, Jau-Ching Wu, Henrich Cheng, Praveen V Mummaneni
For patients with multilevel cervical stenosis at nonadjacent segments, one of the traditional approaches has included a multilevel fusion of the abnormal segments as well as the intervening normal segment. In this video we demonstrate an alternative treatment plan with tailored use of a combination of anterior cervical discectomy and fusion (ACDF) and cervical disc arthroplasty (CDA) with an intervening skipped level. The authors present the case of a 72-year-old woman with myeloradiculopathy and a large disc herniation with facet joint degeneration at C3-4 and bulging disc at C5-6...
January 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28042725/stepwise-illustration-of-teeth-fixation-semi-constrained-cervical-disc-arthroplasty
#15
Chih-Chang Chang, Jau-Ching Wu, Peng-Yuan Chang, Mei-Yin Yeh, Yi-Hsuan Kuo, Li-Yu Fay, Tsung-Hsi Tu, Wen-Cheng Huang, Henrich Cheng
There are many kinds of artificial discs available for cervical disc arthroplasty (CDA), with various designs of fixation and articulation mechanisms. Each of these designs has different features and theoretically fits most optimally in selected types of patients. However, there has been insufficient literature to guide individualized selection among these CDA devices. Since CDA aims to restore the joint function rather than arthrodesis, tailor-made size, shape, and mechanical properties should be taken into account for each candidate's target disc...
January 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28042722/m6-c-artificial-disc-placement
#16
Domagoj Coric, John Parish, Margaret O Boltes
There has been a steady evolution of cervical total disc replacement (TDR) devices over the last decade resulting in surgical technique that closely mimics anterior cervical discectomy and fusion as well as disc design that emphasizes quality of motion. The M6-C TDR device is a modern-generation artificial disc composed of titanium endplates with tri-keel fixation as well as a polyethylene weave with a polyurethane core. Although not yet approved by the FDA, M6-C has finished a pilot and pivotal US Investigational Device Exemption (IDE) study...
January 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28042721/surgical-technique-for-revision-surgery-of-cervical-artificial-disc-replacements
#17
Julia Onken, Bernhard Meyer, Peter Vajkoczy
OBJECTIVE Cervical artificial disc replacement (C-ADR) is a widely used procedure with low risk at implantation. Few cases have been reported about the surgical techniques of C-ADR revision. The authors describe their surgical experience with the explantation of a Galileo C-ADR. METHODS Revision surgery was performed in a 58-year-old patient. Patient positioning and surgical opening techniques were performed as appropriate for anterior cervical decompression. RESULTS Revision surgery via the initial anterior approach was successful following an atraumatic removal of the implant...
January 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28042720/resection-of-uncovertebral-joints-and-posterior-longitudinal-ligament-for-cervical-disc-arthroplasty
#18
Tsung-Hsi Tu, Chih-Chang Chang, Jau-Ching Wu, Li-Yu Fay, Wen-Cheng Huang, Henrich Cheng
The most commonly accepted indications for cervical disc arthroplasty (CDA) are 1- and 2-level cervical disc herniation or spondylosis causing radiculopathy or myelopathy that is refractory to medical management. Unlike anterior cervical discectomy and fusion (ACDF), which eliminates motion, CDA aims to restore the physiological range of motion of the indexed joint. Thus, the effect of indirect decompression gained by the insertion of a sufficiently large interbody graft and incorporation into arthrodesis after ACDF cannot be duplicated for CDA...
January 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28040505/dlg1-polarity-protein-expression-associates-with-the-disease-progress-of-low-grade-cervical-intraepithelial-lesions
#19
Ana Laura Cavatorta, Alejandra Di Gregorio, Marina Bugnon Valdano, Federico Marziali, Mariela Cabral, Hebe Bottai, Jorge Cittadini, Ana Lia Nocito, Daniela Gardiol
Human Discs large tumour suppressor (DLG1) participates in regulating cell polarity and proliferation, suggesting an important connection between epithelial organization and cellular growth control. However, it was demonstrated that DLG1 could acquire oncogenic attributes in some specific contexts. In this work, we evaluated the expression of DLG1 and its contribution to the progress of cervical lesions in order to investigate a potential role of this polarity protein in human oncogenic processes. We analyzed cervical biopsies from women with low-grade squamous intraepithelial lesion (LSIL) diagnosis (n=30), for DLG1 expression by immunohistochemistry...
December 29, 2016: Experimental and Molecular Pathology
https://www.readbyqxmd.com/read/28033533/fatigue-responses-of-the-human-cervical-spine-intervertebral-discs
#20
Narayan Yoganandan, Sagar Umale, Brain Stemper, Bryan Snyder
Numerous studies have been conducted since more than fifty years to understand the behavior of the human lumbar spine under fatigue loading. Applications have been largely driven by low back pain and human body vibration problems. The human neck also sustains fatigue loading in certain type of civilian occupational and military operational activities, and research is very limited in this area. Being a visco-elastic structure, it is important to determine the stress-relaxation properties of the human cervical spine intervertebral discs to enable accurate simulations of these structures in stress-analysis models...
December 15, 2016: Journal of the Mechanical Behavior of Biomedical Materials
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