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https://www.readbyqxmd.com/read/29019902/in-vitro-biomechanical-comparison-after-fixed-and-mobile-core-artificial-cervical-disc-replacement-versus-fusion
#1
COMPARATIVE STUDY
Jigang Lou, Yuanchao Li, Beiyu Wang, Yang Meng, Tingkui Wu, Hao Liu
In vitro biomechanical analysis after cervical disc replacement (CDR) with a novel artificial disc prosthesis (mobile core) was conducted and compared with the intact model, simulated fusion, and CDR with a fixed-core prosthesis. The purpose of this experimental study was to analyze the biomechanical changes after CDR with a novel prosthesis and the differences between fixed- and mobile-core prostheses.Six human cadaveric C2-C7 specimens were biomechanically tested sequentially in 4 different spinal models: intact specimens, simulated fusion, CDR with a fixed-core prosthesis (Discover, DePuy), and CDR with a mobile-core prosthesis (Pretic-I, Trauson)...
October 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28973309/nunec%C3%A2-cervical-disc-arthroplasty-improves-quality-of-life-in-cervical-radiculopathy-and-myelopathy-a-2-yr-follow-up
#2
Isobel Turner, David Choi
BACKGROUND: Anterior cervical disc replacement is an alternative to fusion for the treatment of selected cases of radiculopathy and myelopathy. We report clinical and radiological outcomes after disc replacement with the NuNec™ artificial cervical disc (Pioneer® Surgical Technology, Marquette, Michigan) with subgroup analysis. OBJECTIVE: To review clinical and radiological outcomes after anterior cervical disc replacement with the NuNec™ artificial cervical disc...
August 3, 2017: Neurosurgery
https://www.readbyqxmd.com/read/28882520/dynamic-foraminal-dimensions-during-neck-extension-and-rotation-in-fusion-and-artificial-disc-replacement-an-observational-study
#3
Yener N Yeni, Timothy Baumer, Daniel Oravec, Azam Basheer, Colin P McDonald, Michael J Bey, Stephen W Bartol, Victor Chang
BACKGROUND: Changes in the dimensions of the cervical neural foramina (CNF) are considered to be a key factor in nerve root compression and development of cervical radiculopathy. However, to what extent foraminal geometry differs between patients who underwent anterior cervical discectomy and fusion (ACDF) and those who underwent total disc arthroplasty with an artificial disc (AD) during physiological motion is largely unknown. PURPOSE: The objective of this study is to compare CNF dimensions during physiological neck motion between ACDF and AD...
September 4, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28781915/cervical-artificial-disc-extrusion-after-a-paragliding-accident
#4
Tianyi Niu, Haydn Hoffman, Daniel C Lu
BACKGROUND: Cervical total disc replacement (TDR) is an established alternative to anterior cervical discectomy and fusion (ACDF) with excellent long-term outcomes and low failure rates. Cases of implant failure and migration are scarce and primarily limited to several years postoperatively. The authors report a case of anterior extrusion of a C4-C5 ProDisc-C (DePuy Synthes, West Chester, PA, USA) cervical artificial disc (CAD) 14 months after placement due to minor trauma. CASE DESCRIPTION: A 33-year-old female who had undergone C4-C5 CAD implantation presented with neck pain and spasm after experiencing a paragliding accident...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28752986/analysis-of-medium-long-term-therapeutic-effect-of-pcm-artificial-cervical-disc-replacement
#5
Haibo Li, Yiping Weng, Dong Zhou, Luming Nong, Nanwei Xu
No abstract text is available yet for this article.
July 28, 2017: Panminerva Medica
https://www.readbyqxmd.com/read/28738168/role-of-age-and-injury-mechanism-on-cervical-spine-injury-tolerance-from-head-contact-loading
#6
Narayan Yoganandan, Sajal Chirvi, Liming Voo, Frank A Pintar, Anjishnu Banerjee
OBJECTIVE: The objective of this study was to determine the influence of age and injury mechanism on cervical spine tolerance to injury from head contact loading using survival analysis. METHODS: This study analyzed data from previously conducted experiments using post mortem human subjects (PMHS). Group A tests used the upright intact head-cervical column experimental model. The inferior end of the specimen was fixed, the head was balanced by a mechanical system, and natural lordosis was removed...
July 24, 2017: Traffic Injury Prevention
https://www.readbyqxmd.com/read/28723737/how-to-choose-when-implants-of-adjacent-height-both-fit-the-disc-space-properly-in-single-level-cervical-artificial-disc-replacement
#7
Xin Rong, Jigang Lou, Huibo Li, Yang Meng, Hao Liu
In cervical artificial disc replacement (C-ADR), sometimes we encountered with such cases that implants of adjacent height both fit the target disc space properly. No study was available discussing the choice of implant height and the clinical outcomes under such circumstance. The purpose of this study was to evaluate the impact of different implant heights on the clinical outcomes and radiographic results when the implants of adjacent height both fit the disc space properly. This retrospective study included 34 patients underwent single-level C-ADR at the C5-C6 level at our institution...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28718168/higher-reoperation-rate-following-cervical-disc-replacement-in-a-retrospective-long-term-comparative-study-of-715-patients
#8
Martin Skeppholm, Thomas Henriques, Tycho Tullberg
PURPOSE: To evaluate rates of secondary surgical interventions in a cohort treated with fusion (ACDF), artificial disc replacement (ADR) or a posterior surgical procedure (PP) because of a cervical degenerative pathology. METHODS: 715 patients treated with any primary cervical surgical intervention between the years 2000 and 2010 were retrospectively evaluated regarding frequency of secondary surgery between the years 2000 and 2015, thus giving a follow-up time of minimum 5 years...
July 17, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28614250/the-prevalence-of-heterotopic-ossification-among-patients-after-cervical-artificial-disc-replacement-a-systematic-review-and-meta-analysis
#9
REVIEW
Lingde Kong, Qinghua Ma, Fei Meng, Junming Cao, Kunlun Yu, Yong Shen
BACKGROUND: Prevalence estimates of heterotopic ossification (HO) following cervical artificial disc replacement (ADR) varied widely in previous studies. We conducted a systematic review and meta-analysis to summarize its point prevalence. METHODS: Electronic searches of PubMed, Web of Science, Embase, and Cochrane Library databases were conducted to identify studies that reported prevalence of HO. Definitions of HO and severe HO were based on McAfee grading system...
June 2017: Medicine (Baltimore)
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
#10
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...
August 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28582418/an-in-vivo-comparison-study-in-goats-for-a-novel-motion-preserving-cervical-joint-system
#11
COMPARATIVE STUDY
Jie Qin, Chenguang Zhao, Dong Wang, Bo Zhao, Jun Dong, Haopeng Li, Rongxia Sang, Shuang Wang, Jiao Fu, Rangrang Kong, Xijing He
Cervical degenerative disease is one of the most common spinal disorders worldwide, especially in older people. Anterior cervical corpectomy and fusion (ACCF) is a useful method for the surgical treatment of multi-level cervical degenerative disease. Anterior cervical disc replacement (ACDR) is considered as an alternative surgical method. However, both methods have drawbacks, particularly the neck motion decrease observed after arthrodesis, and arthroplasty should only be performed on patients presenting with cervical disc disease but without any vertebral body disease...
2017: PloS One
https://www.readbyqxmd.com/read/28574978/adjacent-segment-degeneration-following-anterior-cervical-discectomy-and-fusion-versus-the-bryan-cervical-disc-arthroplasty
#12
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
https://www.readbyqxmd.com/read/28536978/a-6-dof-parallel-bone-grinding-robot-for-cervical-disc-replacement-surgery
#13
Heqiang Tian, Chenchen Wang, Xiaoqing Dang, Lining Sun
Artificial cervical disc replacement surgery has become an effective and main treatment method for cervical disease, which has become a more common and serious problem for people with sedentary work. To improve cervical disc replacement surgery significantly, a 6-DOF parallel bone-grinding robot is developed for cervical bone-grinding by image navigation and surgical plan. The bone-grinding robot including mechanical design and low level control is designed. The bone-grinding robot navigation is realized by optical positioning with spatial registration coordinate system defined...
May 24, 2017: Medical & Biological Engineering & Computing
https://www.readbyqxmd.com/read/28525471/cervical-disk-replacement-with-discover-versus-fusion-in-a-single-level-cervical-disk-disease-a-prospective-single-center-randomized-trial-with-a-minimum-2-year-follow-up
#14
Marjan Rožanković, Sergej M Marasanov, Miroslav Vukić
STUDY DESIGN: Prospective randomized study. OBJECTIVE: To compare the clinical outcome after Discover arthroplasty versus anterior cervical discectomy and fusion (ACDF) in patients treated for symptomatic single-level cervical disk disease. SUMMARY OF BACKGROUND DATA: ACDF is still the gold standard for surgical treatment of cervical spine degenerative disk disease. However, results of many studies suggest that it may cause degenerative changes at levels immediately above and below the fusion, known as adjacent segment degenerative disease...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28473949/minimally-invasive-anterior-cervical-discectomy-without-fusion-to-treat-cervical-disc-herniations-in-patients-with-previous-cervical-fusions
#15
Robert E Jacobson, Michelle Granville, Aldo Berti
Adjacent level cervical disc disease and secondarily progressive disc space degeneration that develops years after previously successful anterior cervical fusion at one or more levels is a common, but potentially complex problem to manage. The patient is faced with the option of further open surgery which involves adding another level of disc removal with fusion, posterior decompression, and stabilization, or possibly replacing the degenerated disc with an artificial disc construct. These three cases demonstrate that some patients, especially after minor trauma, may have small herniated discs as the cause for their new symptoms rather than progressive segmental degeneration...
April 3, 2017: Curēus
https://www.readbyqxmd.com/read/28387616/long-term-clinical-and-radiographic-outcomes-of-the-prestige-lp-artificial-cervical-disc-replacement-at-2-levels-results-from-a-prospective-randomized-controlled-clinical-trial
#16
RANDOMIZED CONTROLLED TRIAL
Todd H Lanman, J Kenneth Burkus, Randall G Dryer, Matthew F Gornet, Jeffrey McConnell, Scott D Hodges
OBJECTIVE The aim of this study was to assess long-term clinical safety and effectiveness in patients undergoing anterior cervical surgery using the Prestige LP artificial disc replacement (ADR) prosthesis to treat degenerative cervical spine disease at 2 adjacent levels compared with anterior cervical discectomy and fusion (ACDF). METHODS A prospective, randomized, controlled, multicenter FDA-approved clinical trial was conducted at 30 US centers, comparing the low-profile titanium ceramic composite-based Prestige LP ADR (n = 209) at 2 levels with ACDF (n = 188)...
July 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28365433/percutaneous-endoscopic-cervical-discectomy-pecd-an-analysis-of-outcome-causes-of-reoperation
#17
Hyeong Seok Oh, Byeong-Wook Hwang, Sang-Joon Park, Chang-Sheng Hsieh, Sang-Ho Lee
OBJECTIVE: Percutaneous endoscopic cervical discectomy (PECD) is regarded as an effective treatment modality in cervical disc herniation, including radicular pain and lateral location of disc herniation. This study aimed to evaluate the clinical and radiologic outcomes of PECD along with the causes of reoperation and the technique itself. METHODS: Between January 2007 and November 2012, 101 patients underwent PECD at the Busan Wooridul Hospital. Three patients underwent a 2-level PECD...
June 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28358860/discover-cervical-disc-arthroplasty-versus-anterior-cervical-discectomy-and-fusion-in-symptomatic-cervical-disc-diseases-a-meta-analysis
#18
Lei Shangguan, Guang-Zhi Ning, Yu Tang, Zhe Wang, Zhuo-Jing Luo, Yue Zhou
OBJECTIVE: Symptomatic cervical disc disease (SCDD) is a common degenerative disease, and Discover artificial cervical disc, a new-generation nonconstrained artificial disk, has been developed and performed gradually to treat it. We performed this meta-analysis to compare the efficacy and safety between Discover cervical disc arthroplasty (DCDA) and anterior cervical discectomy and fusion (ACDF) for SCDD. METHODS: An exhaustive literature search of PubMed, EMBASE, and the Cochrane Library was conducted to identify randomized controlled trials that compared DCDA with ACDF for patients suffering SCDD...
2017: PloS One
https://www.readbyqxmd.com/read/28304237/cervical-disc-arthroplasty-with-the-prestige-lp-disc-versus-anterior-cervical-discectomy-and-fusion-at-2-levels-results-of-a-prospective-multicenter-randomized-controlled-clinical-trial-at-24-months
#19
RANDOMIZED CONTROLLED TRIAL
Matthew F Gornet, Todd H Lanman, J Kenneth Burkus, Scott D Hodges, Jeffrey R McConnell, Randall F Dryer, Anne G Copay, Hui Nian, Frank E Harrell
OBJECTIVE The authors compared the efficacy and safety of arthroplasty using the Prestige LP cervical disc with those of anterior cervical discectomy and fusion (ACDF) for the treatment of degenerative disc disease (DDD) at 2 adjacent levels. METHODS Patients from 30 investigational sites were randomized to 1 of 2 groups: investigational patients (209) underwent arthroplasty using a Prestige LP artificial disc, and control patients (188) underwent ACDF with a cortical ring allograft and anterior cervical plate...
June 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28272256/a-morphometric-study-of-the-middle-and-lower-cervical-vertebral-endplates-and-their-components
#20
Hang Feng, Xiang-Yi Fang, Da-Geng Huang, Cheng-Cheng Yu, Hou-Kun Li, Song-Chuan Zhao, Chao-Yuan Ge, Ru-Hai Bai, Ding-Jun Hao
Cervical disc arthroplasty is a common method of treating cervical degenerative disease. However, the footprints of most prosthesis dimensions are obtained from data of Caucasian individuals. Besides, there is a large discrepancy between footprints of currently available cervical disc prostheses and anatomic dimensions of cervical endplates. We aimed to detail the three-dimensional (3D) anatomic morphology of the subaxial cervical vertebral endplate, utilizing high-precision, high-resolution scanning equipment, and provide a theoretical basis for designing appropriate disc prostheses for Chinese patients...
March 2017: Medicine (Baltimore)
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