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Artificial Disk Replacement

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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
#1
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
#2
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
#3
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
#4
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
#5
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 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
#6
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
#7
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
#8
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
#9
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...
November 25, 2014: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/25361370/clinical-and-radiographic-evaluation-of-cervical-disk-replacement-a-retrospective-study
#10
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
https://www.readbyqxmd.com/read/25148159/imaging-of-current-spinal-hardware-lumbar-spine
#11
REVIEW
Alice S Ha, Jonelle M Petscavage-Thomas
OBJECTIVE: The purposes of this article are to review the indications for and the materials and designs of hardware more commonly used in the lumbar spine; to discuss alternatives for each of the types of hardware; to review normal postoperative imaging findings; to describe the appropriateness of different imaging modalities for postoperative evaluation; and to show examples of hardware complications. CONCLUSION: Stabilization and fusion of the lumbar spine with intervertebral disk replacement, artificial ligaments, spinous process distraction devices, plate-and-rod systems, dynamic posterior fusion devices, and newer types of material incorporation are increasingly more common in contemporary surgical practice...
September 2014: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/25055276/imaging-current-spine-hardware-part-1-cervical-spine-and-fracture-fixation
#12
REVIEW
Jonelle M Petscavage-Thomas, Alice S Ha
OBJECTIVE: The goals of this article are to review the indications for use, the materials, and the designs of hardware more commonly used in the cervical spine; to discuss alternatives for each of the different types of hardware; to review normal postoperative imaging findings; to describe the appropriateness of different imaging modalities for postoperative evaluation; and to illustrate examples of hardware complications. This article will also review vertebral body fracture fixation...
August 2014: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/24981720/finite-element-simulation-of-an-artificial-intervertebral-disk-using-fiber-reinforced-laminated-composite-model
#13
Mehrdad Shahmohammadi, Hadi Asgharzadeh Shirazi, Alireza Karimi, Mahdi Navidbakhsh
Degeneration of intervertebral disk (IVD) has been increased in recent years. The lumbar herniation can be cured using conservative and surgical procedures. Surgery is considered after failure of conservative treatment. Partial discectomy, fusion, and total disk replacement (TDR) are also common surgical treatments for degenerative disk disease. However, due to limitations and disadvantages of the current treatments, many studies have been carried out to approach the best design of mimicking natural disk. Recently, a new method of TDRs has been introduced using nature deformation of IVD by reinforced fibers of annulus fibrosis...
October 2014: Tissue & Cell
https://www.readbyqxmd.com/read/24979275/artificial-disk-replacement-in-the-treatment-of-degenerative-cervical-disk-disorder-a-30-year-follow-up-study
#14
Haisong Yang, Xuhua Lu, Wen Yuan, Xinwei Wang, Deyu Chen, Dinglin Zhao
STUDY DESIGN: Retrospective case series study. OBJECTIVE: To clarify the results of a long-term (30 yr) follow-up study of artificial disk replacement (ADR) for the treatment of cervical disk disease. SUMMARY OF BACKGROUND DATA: The use of the ADR procedure has become widespread during the past 10 years. Its purpose is to preserve motion of the functional spinal unit. However, the long-term results are unknown. METHODS: Thirty-seven patients underwent ADR between 1980 and 1985 in the Department of Orthopedic Surgery, Changzheng Hospital...
September 1, 2014: Spine
https://www.readbyqxmd.com/read/24920867/the-use-of-europiumstearate-to-trace-polyethylene-wear-debris-in-joint-fluid-after-prosthetic-joint-replacement-a-feasibility-study
#15
J Kunze, V Ngai, S Koelling, J J Jacobs, M A Wimmer
Ultra-high molecular weight polyethylene (UHMWPE) is the most common counterface material against metals or ceramics in artificial hip or knee joints. Wear and the resulting particulate debris, however, limit the life span of the implant. In this study, the general feasibility of using Europium (Eu) as tracer material to quantify UHMWPE wear in joint fluid is investigated. Using Inductively Coupled Mass Spectrometry (ICP-MS), recovery experiments of Eu in artificial joint fluid were performed. In order to dope polyethylene with 50 ppm Eu, nascent UHMWPE powder was mixed with a solution of Eu-stearate...
2013: Trends in Applied Spectroscopy
https://www.readbyqxmd.com/read/24909562/how-can-bioactive-glasses-be-useful-in-ocular-surgery
#16
REVIEW
Francesco Baino
In the last few decades, the introduction of bioactive glasses (BGs), a special class of bioceramics that are able to bond to living tissues stimulating new tissue growth, has improved both treatment procedures via reconstructive surgery and the quality of life of rehabilitated patients in orthopedics and dentistry. While BGs have been extensively investigated for applications in these two surgical fields, there has been relatively little research on their use in other medical areas. Glass has been used for centuries to produce external refractive lenses and the intraocular implantation of small glass disks to correct visual deficiencies has been documented since the mid 1700s...
March 2015: Journal of Biomedical Materials Research. Part A
https://www.readbyqxmd.com/read/24694684/radiographic-variables-that-may-predict-clinical-outcomes-in-cervical-disk-replacement-surgery
#17
Jeffrey A Rihn, Kristen Radcliff, John Hipp, Alexander R Vaccaro, Alan S Hilibrand, David G Anderson, Todd J Albert
STUDY DESIGN: Retrospective analysis of prospectively collected data. OBJECTIVE: To determine which, if any, radiographic parameters are predictive of clinical outcome after cervical disk replacement (CDR) surgery. SUMMARY OF BACKGROUND DATA: It is unclear whether radiographic parameters are predictive of outcome after CDR. METHODS: An analysis of the radiographic parameters and clinical outcomes of the CDR cohort of the Discover artificial cervical disk IDE trial was performed...
April 2015: Journal of Spinal Disorders & Techniques
https://www.readbyqxmd.com/read/24477889/heterotopic-ossification-in-cervical-total-disk-replacement-a-finite-element-analysis
#18
Danaa Ganbat, Kyungsoo Kim, Yong Jun Jin, Yoon Hyuk Kim
Heterotopic ossification is one of the possible complications following cervical total disk replacement. Although there are numerous hypotheses regarding the etiology of heterotopic ossification, the main causes of heterotopic ossification remain unknown. In this study, we hypothesize that heterotopic ossification formation is related to external loading in the cervical vertebrae after total disk replacement. A two-dimensional finite element model of a cervical vertebra treated by total disk replacement in the sagittal plane was developed...
February 2014: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/23797929/the-effect-of-range-of-motion-after-single-level-discover-cervical-artificial-disk-replacement
#19
Yu Chen, Wen Yuan, Xiaodong Wu, Huajiang Chen, Xinwei Wang, Lili Yang, Hailong He, Yang Liu, Nicholas Tsai, Yucheng Peng, Shiyi Gu, Qizhi Sun
STUDY DESIGN: A biomechanical study of cervical artificial disk replacement (CADR). OBJECTIVE: This study aimed to investigate the range of motion (ROM) of the treated segment, the ROM of the adjacent segments, the global ROM in the sagittal plane, and the total neck ROM in the 3 cardinal planes after single-level Discover CADR. SUMMARY OF BACKGROUND DATA: CADR could theoretically preserve the motion function of the treated segment without affecting the adjacent segments significantly...
July 2013: Journal of Spinal Disorders & Techniques
https://www.readbyqxmd.com/read/23728542/total-knee-prosthesis-polyethylene-wear-reduction-by-a-new-%C3%A2-metal-part-finishing-method
#20
Antonio Gigante, Valerio Cigna, Sandra Manzotti, Tommaso Villa, Eleonora Salvolini, Monica Mattioli-Belmonte
PURPOSE: The purpose of this study was to assess a new metal component finishing designed to improve total knee prosthesis durability. Wear of ultrahigh molecular-weight polyethylene (UHMWPE), with generation of submicrometer- and micrometer-sized particles, has been associated with osteolysis and artificial joint failure. Wear extent is influenced by several factors, some of which are related to manufacturing. METHODS: UHMWPE wear was assessed in metal prosthesis components finished with the Microloy® technology and in traditionally finished components by wear simulation experiments (pin on disk and knee simulator tests) and analysis of wear debris...
2013: Journal of Applied Biomaterials & Functional Materials
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