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Artificial Disk Replacement

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https://www.readbyqxmd.com/read/28632563/why-lumbar-artificial-disk-replacements-ladrs-fail
#1
Kenneth Pettine, Robert Ryu, Fernando Techy
STUDY DESIGN: A retrospective review of prospectively collected data. OBJECTIVE: To determine why artificial disk replacements (ADRs) fail by examining results of 91 patients in FDA studies performed at a single investigational device exemption (IDE) site with minimum 2-year follow-up. SUMMARY OF BACKGROUND DATA: Patients following lumbar ADR generally achieve their 24-month follow-up results at 3 months postoperatively. MATERIALS AND METHODS: Every patient undergoing ADR at 1 IDE site by 2 surgeons was evaluated for clinical success...
July 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28525488/artificial-disk-replacement-combined-with-fusion-versus-2-level-fusion-in-cervical-2-level-disk-disease-with-a-5-year-follow-up
#2
Gyu Yeul Ji, Chang Hyun Oh, Dong Ah Shin, Yoon Ha, Seong Yi, Keung Nyun Kim, Hyun Cheol Shin, Do Heum Yoon
STUDY DESIGN: Prospective study. OBJECTIVE: The purpose of this study was to compare the long-term clinical and radiologic outcomes of hybrid surgery (HS) and 2-level anterior cervical discectomy and fusion (2-ACDF) in patients with 2-level cervical disk disease. SUMMARY OF BACKGROUND DATA: In a previous study with a 2-year follow-up, HS was shown to be superior to 2-ACDF, with a better Neck Disability Index (NDI) score, less postoperative neck pain, faster C2-C7 range of motion (ROM) recovery, and less adjacent ROM increase...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28525485/analysis-of-the-factors-that-could-predict-segmental-range-of-motion-after-cervical-artificial-disk-replacement-a-7-year-follow-up-study
#3
Wei Tian, Han Wang, Kai Yan, Xiao Han, Peihao Jin
STUDY DESIGN: A retrospective cohort study. OBJECTIVE: To identify the potential preoperative factors and surgical technique factors that are associated with long-term range of motion (ROM) after surgery. Further, this article aimed to guide selection of patients with cervical artificial disk replacement and a fine surgical technique. SUMMARY OF BACKGROUND DATA: Segmental ROM is the most important parameter concerning cervical kinematics after a cervical artificial disk replacement...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28525482/artificial-cervical-disk-replacement-for-the-treatment-of-adjacent-segment-disease-after-anterior-cervical-decompression-and-fusion
#4
Sheng Bin, Huang Xiangwang, Xiao Sheng, Xiang Tiecheng, Liu Xiangyang, Zhang Yi, Liu Bin
STUDY DESIGN: Retrospective study. OBJECTIVE: To evaluate the outcome of artificial cervical disk replacement (ACDR) for the treatment of adjacent segment disease (ASD) after anterior cervical decompression and fusion (ACDF). SUMMARY OF BACKGROUND DATA: ACDF is the useful procedure for degenerative cervical diseases. However, studies have reported accelerated degeneration of functional spinal units adjacent to the fusion site after ACDF. MATERIALS AND METHODS: Between January 2004 and January 2011, 32 inpatients (18 male, 14 female; age, 38-61 y; mean, 48 y) underwent ACDR for the treatment of ASD after previous ACDF (single-level: n=12; 2-level: n=15; 3-level: n=5)...
June 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28525481/comparison-of-the-clinical-and-radiographic-results-between-cervical-artificial-disk-replacement-and-anterior-cervical-fusion-a-6-year-prospective-nonrandomized-comparative-study
#5
Wei Tian, Kai Yan, Xiao Han, Jie Yu, Peihao Jin, Xiaoguang Han
STUDY DESIGN: Prospective nonrandomized comparative study. OBJECTIVE: To compare the long-term clinical and radiographic results of cervical artificial disk replacement (CADR) and anterior cervical discectomy and fusion (ACDF), and to provide our evidence if CADR could reduce adjacent segment degeneration (ASD). SUMMARY OF BACKGROUND DATA: CADR is widely used in spine surgery today. Despite the short-term results of it having been ascertained, the long-term results are still under observation...
June 2017: Clinical Spine Surgery
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
#6
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/28323697/generation-and-development-of-paravertebral-ossification-in-cervical-artificial-disk-replacement-a-detailed-analytic-report-using-coronal-reconstruction-ct
#7
Wei Tian, Xiao Han, Bo Liu, Da He, Yanwei Lv, James Yue
STUDY DESIGN: A retrospective follow-up study and review of images in published papers. OBJECTIVE: To determine whether true heterotopic ossification (HO) occurs in artificial disk replacement (ADR); to evaluate the incidence of paravertebral ossification (PO) and its influence on ADR. SUMMARY OF BACKGROUND DATA: HO is typically defined as the abnormal formation of true bone within extraskeletal soft tissues. However, HO in ADR does not fit this definition precisely, as it originates from vertebral body, making it hard to distinguish radiologically from preexisting osteophytes...
April 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28263442/the-effects-of-presence-of-a-backside-screw-hole-on-biotribological-behavior-of-phospholipid-polymer-grafted-crosslinked-polyethylene
#8
Kenichi Watanabe, Toru Moro, Masayuki Kyomoto, Kenichi Saiga, Shuji Taketomi, Yuho Kadono, Yoshio Takatori, Sakae Tanaka, Kazuhiko Ishihara
One of the important factors in determining the success of joint replacement is the wear performance of polyethylene. Although highly crosslinked polyethylene (CLPE) is presently used, it is still not adequate. We have developed a surface modification technology using poly(2-methacryloyloxyethyl phosphorylcholine) (PMPC) in an attempt to improve wear performance. In this study, we evaluated the wear and creep deformation resistances of 3-mm and 6-mm thick PMPC-grafted CLPE disks, set on a metal back-plate, with and without a sham screw hole...
March 6, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/28254671/are-patient-reported-outcomes-predictive-of-patient-satisfaction-5-years-after-anterior-cervical-spine-surgery
#9
Gregory D Schroeder, Dom Coric, Han Jo Kim, Todd J Albert, Kris E Radcliff
BACKGROUND CONTEXT: Patient satisfaction is becoming an increasing common proxy for surgical quality; however, the correlation between patient satisfaction and surgical outcomes 2 and 5 years after anterior cervical surgery has not been evaluated. PURPOSE: The study aimed to determine if patient satisfaction is predicted by improvement in patient-reported outcomes (PRO) 2 and 5 years after anterior cervical spine surgery. STUDY DESIGN: This is a retrospective analysis of prospectively collected data...
February 27, 2017: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/28032699/an-analysis-of-paravertebral-ossification-in-cervical-artificial-disc-replacement-a-novel-classification-based-on-computed-tomography
#10
Wei Tian, Ming-Xing Fan, Ya-Jun Liu, Xiao Han, Kai Yan, Han Wang, Yan-Wei Lyu
OBJECTIVE: Cervical artificial disc replacement (CADR) is a new technology in cervical spine surgery. However, CADR may result in paravertebral ossification (PO) after surgery and affect the mobility of the related spinal segments. The present widely used assessment method based on X-ray tomography cannot provide the position information of PO, and also PO detection rates by X-ray are low. The incidence of PO varies dramatically between studies. This study built a novel classification system based on cervical computer tomography (CT) scan to re-evaluate the incidence of PO and its influence on CADR, and also analyzed the predisposing factors of PO...
November 2016: Orthopaedic Surgery
https://www.readbyqxmd.com/read/27355731/artificial-disk-replacement-combined-with-fusion-versus-2-level-fusion-in-cervical-2-level-disk-disease-with-a-5-year-follow-up
#11
Gyu Yeul Ji, Chang Hyun Oh, Dong Ah Shin, Yoon Ha, Seong Yi, Keung Nyun Kim, Hyun Cheol Shin, Do Heum Yoon
STUDY DESIGN: Prospective study. OBJECTIVE: The purpose of this study was to compare the long-term clinical and radiologic outcomes of hybrid surgery (HS) and 2-level anterior cervical discectomy and fusion (2-ACDF) in patients with 2-level cervical disk disease. SUMMARY OF BACKGROUND DATA: In a previous study with a 2-year follow-up, HS was shown to be superior to 2-ACDF, with a better Neck Disability Index (NDI) score, less postoperative neck pain, faster C2-C7 range of motion (ROM) recovery, and less adjacent ROM increase...
June 28, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/26835207/return-to-play-in-athletes-receiving-cervical-surgery-a-systematic-review
#12
Robert W Molinari, Krystle Pagarigan, Joseph R Dettori, Robert Molinari, Kenneth E Dehaven
Study Design Systematic review. Clinical Questions Among athletes who undergo surgery of the cervical spine, (1) What proportion return to play (RTP) after their cervical surgery? (2) Does the proportion of those cleared for RTP depend on the type of surgical procedure (artificial disk replacement, fusion, nonfusion foraminotomies/laminoplasties), number of levels (1, 2, or more levels), or type of sport? (3) Among those who return to their presurgery sport, how long do they continue to play? (4) Among those who return to their presurgery sport, how does their postoperative performance compare with their preoperative performance? Objectives To evaluate the extent and quality of published literature on the topic of return to competitive athletic completion after cervical spinal surgery...
February 2016: Global Spine Journal
https://www.readbyqxmd.com/read/26682099/adverse-event-recording-and-reporting-in-clinical-trials-comparing-lumbar-disk-replacement-with-lumbar-fusion-a-systematic-review
#13
REVIEW
Jayme Hiratzka, Farbod Rastegar, Alec G Contag, Daniel C Norvell, Paul A Anderson, Robert A Hart
Study Design Systematic review. Objectives (1) To compare the quality of adverse event (AE) methodology and reporting among randomized trials comparing lumbar fusion with lumbar total disk replacement (TDR) using established AE reporting systems; (2) to compare the AEs and reoperations of lumbar spinal fusion with those from lumbar TDR; (3) to make recommendations on how to report AEs in randomized controlled trials (RCTs) so that surgeons and patients have more-detailed and comprehensive information when making treatment decisions...
December 2015: Global Spine Journal
https://www.readbyqxmd.com/read/26529430/biomechanics-of-hybrid-anterior-cervical-fusion-and-artificial-disc-replacement-in-3-level-constructs-an-in-vitro-investigation
#14
Zhenhua Liao, Guy R Fogel, Ting Pu, Hongsheng Gu, Weiqiang Liu
BACKGROUND: The ideal surgical approach for cervical disk disease remains controversial, especially for multilevel cervical disease. The purpose of this study was to investigate the biomechanics of the cervical spine after 3-level hybrid surgery compared with 3-level anterior cervical discectomy and fusion (ACDF). MATERIAL AND METHODS: Eighteen human cadaveric spines (C2-T1) were evaluated under displacement-input protocol. After intact testing, a simulated hybrid construct or fusion construct was created between C3 to C6 and tested in the following 3 conditions: 3-level disc plate disc (3DPD), 3-level plate disc plate (3PDP), and 3-level plate (3P)...
2015: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/26329412/color-stability-and-surface-roughness-of-composite-submitted-to-different-types-and-periods-of-finishing-polishing-physical-properties-of-composites
#15
COMPARATIVE STUDY
Renata Costa de Morais, Lucas da Fonseca Roberti Garcia, Diogo Rodrigues Cruvinel, Fernanda de Carvalho Panzeri Pires-de-Souza
AIM: The aim of this study was to evaluate the influence of accelerated artificial aging (AAA) on color stability (AE) and surface roughness of composite submitted to different systems and periods of finishing/polishing. MATERIALS AND METHODS: A Teflon matrix was used to fabricate 60 specimens that were separated into four groups, according to the finishing/polishing system: G1: no polishing; G2: abrasive papers; G3: rubber polishing disks; and G4: G2 + G3. Polishing was performed at three different time intervals (n = 6): immediately (Im), 24 hours (24 hours) and 7 days (7 day) after specimen fabrication...
July 1, 2015: Journal of Contemporary Dental Practice
https://www.readbyqxmd.com/read/26292255/artificial-disk-replacement-combined-with-fusion-versus-2-level-fusion-in-cervical-2-level-disk-disease-with-a-5-year-follow-up
#16
Gyu Yeul Ji, Chang Hyun Oh, Dong Ah Shin, Yoon Ha, Seong Yi, Keung Nyun Kim, Hyun Cheol Shin, Do Heum Yoon
STUDY DESIGN: Prospective study. OBJECTIVE: The purpose of this study was to compare the long-term clinical and radiologic outcomes of hybrid surgery (HS) and 2-level anterior cervical discectomy and fusion (2-ACDF) in patients with 2-level cervical disk disease. SUMMARY OF BACKGROUND DATA: In a previous study with a 2-year follow-up, HS was shown to be superior to 2-ACDF, with a better Neck Disability Index (NDI) score, less postoperative neck pain, faster C2-C7 range of motion (ROM) recovery, and less adjacent ROM increase...
June 28, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/26205640/quality-of-systematic-reviews-an-example-of-studies-comparing-artificial-disc-replacement-with-fusion-in-the-cervical-spine
#17
COMPARATIVE STUDY
Osama A Tashani, Hanan El-Tumi, Khaled Aneiba
Cervical artificial disc replacement (C-ADR) is now an alternative to anterior cervical discectomy and fusion (ACDF). Many studies have evaluated the efficacy of C-ADR compared with ACDF. This led to a series of systematic reviews and meta-analyses to evaluate the evidence of the superiority of one intervention against the other. The aim of the study presented here was to evaluate the quality of these reviews and meta-analyses. Medline via Ovid, Embase, and Cochrane Library were searched using the keywords: (total disk replacement, prosthesis, implantation, discectomy, and arthroplasty) AND (cervical vertebrae, cervical spine, and spine) AND (systematic reviews, reviews, and meta-analysis)...
2015: Libyan Journal of Medicine
https://www.readbyqxmd.com/read/26163521/wear-assessments-of-a-new-cervical-spinal-disk-prosthesis-influence-of-loading-and-kinematic-patterns-during-in-vitro-wear-simulation
#18
Wenjie Wu, Jingtong Lyu, Hao Liu, Xin Rong, Beiyu Wang, Ying Hong, Quan Gong, Tao Li, Limin Liu, Yueming Song, Yong Cai, Wenli Xu
Surgical treatment is one of the effective methods of treatment in cervical spondylosis. The traditional method of operation is decompression fusion; however, this surgery results in restricted movement of cervical vertebra and adjacent segment degeneration. Due to the deficiency of traditional surgery, scholars have widely carried out artificial cervical disk replacement surgery and have achieved good clinical effects. Comparing to the characteristics of the common artificial cervical disk which is used frequently, we developed a new artificial cervical intervertebral disk prosthesis...
September 2015: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/25424193/a-bio-artificial-renal-epithelial-cell-system-conveys-survival-advantage-in-a-porcine-model-of-septic-shock
#19
Angela J Westover, Deborah A Buffington, Kimberly A Johnston, Peter L Smith, Christopher J Pino, H David Humes
Renal cell therapy using the hollow fiber based renal assist device (RAD) improved survival time in an animal model of septic shock (SS) through the amelioration of cardiac and vascular dysfunction. Safety and ability of the RAD to improve clinical outcomes was demonstrated in a Phase II clinical trial, in which patients had high prevalence of sepsis. Even with these promising results, clinical delivery of cell therapy is hampered by manufacturing hurdles, including cell sourcing, large-scale device manufacture, storage and delivery...
March 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/25361370/clinical-and-radiographic-evaluation-of-cervical-disk-replacement-a-retrospective-study
#20
Hao-Xuan Zhang, Yu Chen, Peng Gao, Yuan-Dong Shao, Yong Hou, Lei Cheng, Sailendra Maharjan, Lin Nie
Studies have shown the effectiveness of cervical disk replacement. However, clinical outcomes, particularly by radiographic assessment during the 36-month follow-up visit, have not been reported for cervical disk replacement with Mobi-C (LDR, Austin, Texas) disk prostheses. A retrospective study was conducted at 10 centers across China and included 65 patients who underwent single-level Mobi-C disk prosthesis replacement from October 2009 to July 2010. Clinical and radiographic data were collected before replacement, 7 days postoperatively, and 1, 3, 6, 12, 24, and 36 months postoperatively...
November 2014: Orthopedics
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