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Artificial disc replacement

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https://www.readbyqxmd.com/read/28183604/wear-behaviour-of-uhmwpe-reinforced-by-carbon-nanofiller-and-paraffin-oil-for-joint-replacement
#1
Samy Yousef, Annamaria Visco, Giovanna Galtieri, Davide Nocita, Claudia Espro
The majority of artificial joints incorporate biomedical grade Ultra High Molecular Weight Poly Ethylene (UHMWPE), whose wear is considered most important in controlling service time of the whole joint. The aim of this work was to improve wear resistance of UHMWPE through the addition of 0.5-2.0wt% of Carbon Nano Filler (CNF) and 2% wt of Paraffin Oil (PO) using ball milling (BM) and extrusion techniques (EX). The wear tests on these nanocomposites were conducted by a pin on disc in dry (air) and wet media (simulated synovial fluid or artificial lubricant, and bovine synovial fluid or natural lubricant)...
April 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28175519/345%C3%A2-elective-anterior-cervical-discectomy-and-fusion-vs-cervical-artificial-disc-replacement-a-comparison-of-perioperative-morbidity-and-early-outcomes
#2
Pavan S Upadhyayula, John K Yue, Reid Hoshide, Erik Curtis, Joseph D Ciacci
No abstract text is available yet for this article.
August 1, 2016: Neurosurgery
https://www.readbyqxmd.com/read/28142281/adjacent-level-arthroplasty-following-cervical-fusion
#3
Deshpande V Rajakumar, Akshay Hari, Murali Krishna, Subhas Konar, Ankit Sharma
OBJECTIVE Adjacent-level disc degeneration following cervical fusion has been well reported. This condition poses a major treatment dilemma when it becomes symptomatic. The potential application of cervical arthroplasty to preserve motion in the affected segment is not well documented, with few studies in the literature. The authors present their initial experience of analyzing clinical and radiological results in such patients who were treated with arthroplasty for new or persistent arm and/or neck symptoms related to neural compression due to adjacent-segment disease after anterior cervical discectomy and fusion (ACDF)...
February 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28142258/bone-loss-of-vertebral-bodies-at-the-operative-segment-after-cervical-arthroplasty-a-potential-complication
#4
Dong Hwa Heo, Dong Chan Lee, Jong Yang Oh, Choon Keun Park
OBJECTIVE Bony overgrowth and spontaneous fusion are complications of cervical arthroplasty. In contrast, bone loss or bone remodeling of vertebral bodies at the operation segment after cervical arthroplasty has also been observed. The purpose of this study is to investigate a potential complication-bone loss of the anterior portion of the vertebral bodies at the surgically treated segment after cervical total disc replacement (TDR)-and discuss the clinical significance. METHODS All enrolled patients underwent follow-up for more than 24 months after cervical arthroplasty using the Baguera C disc...
February 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28142245/cervical-arthroplasty-what-does-the-labeling-say
#5
Mazda K Turel, Mena G Kerolus, Owoicho Adogwa, Vincent C Traynelis
OBJECTIVE The aim of this paper was to comprehensively review each of the Food and Drug Administration (FDA)-approved labels of 7 total cervical disc replacements, assess the exact methodology in which the trial was conducted, and provide a broad comparison of these devices to allow each surgeon to determine which disc best suits his or her specific treatment goals based on the specific labels and not the studies published. METHODS The FDA-approved labels for each of the 7 artificial discs were obtained from the official FDA website...
February 2017: Neurosurgical Focus
https://www.readbyqxmd.com/read/28042722/m6-c-artificial-disc-placement
#6
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
#7
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/28032699/an-analysis-of-paravertebral-ossification-in-cervical-artificial-disc-replacement-a-novel-classification-based-on-computed-tomography
#8
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/28002363/comparison-of-outcomes-of-single-level-anterior-cervical-discectomy-with-fusion-and-single-level-artificial-cervical-disc-replacement-for-single-level-cervical-degenerative-disc-disease
#9
Praveen Kumar Pandey, Inder Pawar, Jyoti Gupta, Raaghav Rai Verma
STUDY DESIGN: A single-center, prospective comparative study of prospectively collected outcomes, with a minimum 12 months follow-up. OBJECTIVES: The primary purpose of the study is to investigate the clinical, functional, and radiological outcomes of cervical total disc replacement (CTDR) in comparison with anterior cervical discectomy and fusion (ACDF) in the treatment of single-level cervical disc degenerative disease, prospectively. SUMMARY OF BACKGROUND DATA: CTDR has recently been an alternative to ACDF in cervical disc degenerative disease to preserve the motion at the treated level...
January 1, 2017: Spine
https://www.readbyqxmd.com/read/27939974/revision-surgeries-following-artificial-disc-replacement-of-cervical-spine
#10
Jong-Beom Park, Han Chang, Jin S Yeom, Kyung-Soo Suk, Dong-Ho Lee, Jae Chul Lee
OBJECTIVE: We investigated causes and results of revision surgeries after artificial disc replacement of cervical spine (C-ADR). METHODS: Twenty-one patients (mean age: 52.8) who underwent revision surgery after C-ADR and who had a minimum 2-year of follow-up were included into this study. The mean time between the primary and revision surgeries was 21 months. During their primary surgeries, 14 patients underwent single level C-ADR, 2 two-level C-ADR, and 5 two-level hybrid surgery for 16 radiculopathy, 3 myelopathy, and 2 adjacent segment diseases...
December 2016: Acta Orthopaedica et Traumatologica Turcica
https://www.readbyqxmd.com/read/27902945/artificial-cervical-disc-replacement-with-the-prestige-lp-prosthesis-for-the-treatment-of-non-contiguous-2-level-cervical-degenerative-disc-disease-a-minimum-24-month-follow-up
#11
Tingkui Wu, Beiyu Wang, Chen Ding, Yang Meng, Jigang Lou, Yi Yang, Hao Liu
OBJECTIVE: We describe the features of non-contiguous 2-level cervical degenerative disc disease (NCDDD), investigate the safety and feasibility of artificial cervical disc replacement (ACDR) for the treatment of NCDDD, and expect that our study will provide spine surgeons with an alternative procedure for NCDDD. METHODS: Twenty-five patients with NCDDD received ACDR with a Prestige-LP prosthesis. Clinical outcomes were evaluated using the 36-Short Form (SF-36, Mental Component Summary [MCS] and Physical Component Summary [PCS]), Visual Analog Scale (VAS), Japanese Orthopedic Association (JOA), and Neck Disability Index (NDI) scores...
January 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/27890691/minimum-four-year-subsequent-surgery-rates-of-cervical-disc-replacement-versus-fusion-a-meta-analysis-of-prospective-randomized-clinical-trials
#12
T K Wu, H Liu, B Y Wang, Y Meng
INSTRUCTION: Anterior cervical discectomy and fusion (ACDF) is a well-accepted surgical management strategy for radiculopathy and/or myelopathy. However, complications sometimes required subsequent surgery at the operated and adjacent levels. Artificial cervical disc replacement (ACDR) has been accepted as the most extensive non-fusion procedure and is designed to preserve motion. However, some specific complications can result in subsequent surgery, thus, attracting the attention of investigators...
November 24, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27888676/revision-surgery-for-cervical-artificial-disc-surgical-technique-and-clinical-results
#13
J Onken, A Reinke, J Radke, T Finger, S Bayerl, P Vajkoczy, B Meyer
OBJECTIVE: Cervical artificial disc replacement (C-ADR) was developed with the goal of preserving mobility of the cervical segment in patients with degenerative disc disease. So far, little is known about experiences with revision surgery and explantation of C-ADRs. Here, we report our experience with revision the third generation, Galileo-type disc prosthesis from a retrospective study of two institutions. PATIENTS AND METHODS: Between November 2008 and July 2016, 16 patients with prior implantation of C-ADR underwent removal of the Galileo-type disc prosthesis (Signus, Medizintechnik, Germany) due to a call back by industry...
January 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/27836574/towards-bioreactor-development-with-physiological-motion-control-and-its-applications
#14
Marcus Stoffel, Wolfgang Willenberg, Marzieh Azarnoosh, Nadine Fuhrmann-Nelles, Bei Zhou, Bernd Markert
In biomedical applications bioreactors are used, which are able to apply mechanical loadings under cultivation conditions on biological tissues. However, complex mechanobiological evolutions, such as the dependency between mechanical properties and cell activity, depend strongly on the applied loading conditions. This requires correct physiological movements and loadings in bioreactors. The aim of the present study is to develop bioreactors, in which native and artificial biological tissues can be cultivated under physiological conditions in knee joints and spinal motion segments...
January 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/27826089/ulf-fernstrom-1915-1985-and-his-contributions-to-the-development-of-artificial-disc-replacements-a-historical-vignette
#15
REVIEW
Christian Fisahn, Brittni Burgess, Joe Iwanaga, Jens R Chapman, Rod J Oskouian, R Shane Tubbs
INTRODUCTION: Artificial disc replacements, which serve the function of separating vertebrae to allow for proper spinal alignment, can help treat debilitating low back pain in patients who have failed other conservative methods of treatment. Ulf Fernstrom was the pioneer of artificial disc replacement, and his contribution in the way of Fernstrom "Balls" dramatically altered spinal surgery and technique by demonstrating the proper technique and implant that should be utilized for areas requiring motion in many planes...
November 5, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27807981/evaluation-of-aesculap-implant-systems-activl-artificial-disc-for-the-treatment-of-degenerative-disc-disease
#16
Daniel Shein, Jennifer Shue, Federico Girardi
A primary cause of chronic low back pain and disability is lumbar degenerative disc disease (DDD). Surgical treatments are available for DDD including fusion or lumbar total disc replacement (TDR). Lumbar TDR is performed as a motion-preserving alternative to lumbar fusion. There are several marketed lumbar TDR devices including the Aesculap Implant Systems activL Artificial Disc, Charité Artificial Disc and the ProDisc-L Total Disc Replacement. Areas covered: Considering the various surgical options by which lumbar DDD can be managed, here we evaluate the biologic and biomechanical benefits and concerns of the Aesculap activL Artificial Disc...
December 2016: Expert Review of Medical Devices
https://www.readbyqxmd.com/read/27751923/return-to-sports-after-cervical-total-disc-replacement
#17
Andreas Reinke, Michael Behr, Alexander Preuss, Jimmy Villard, Bernhard Meyer, Florian Ringel
OBJECTIVE: Total disc replacement (TDR) is typically indicated in young patients with a cervical soft disc herniation. There are few data on the activity level of patients after cervical TDR, in particular from young patients who are expected to have a high activity level with frequent exercising. The expectation is that returning to active sports after cervical TDR is not restricted. METHODS: Fifty patients were treated with a monosegmental cervical TDR at our department between May 2006 and March 2012...
January 2017: World Neurosurgery
https://www.readbyqxmd.com/read/27658427/applications-of-3d-printing-in-the-management-of-severe-spinal-conditions
#18
Elena Provaggi, Julian J H Leong, Deepak M Kalaskar
The latest and fastest-growing innovation in the medical field has been the advent of three-dimensional printing technologies, which have recently seen applications in the production of low-cost, patient-specific medical implants. While a wide range of three-dimensional printing systems has been explored in manufacturing anatomical models and devices for the medical setting, their applications are cutting-edge in the field of spinal surgery. This review aims to provide a comprehensive overview and classification of the current applications of three-dimensional printing technologies in spine care...
September 22, 2016: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/27470956/-clinical-outcome-of-mid-term-follow-up-of-anterior-cervical-non-fusion-surgery-versus-anterior-cervical-discectomy-and-fusion-for-cervical-spondylosis
#19
L Guan, W L Wang, Y Hai, Y Z Liu, X L Chen, L Chen
OBJECTIVE: To evaluate the clinical and radiological outcomes of artificial cervical disc replacement (Prodisc-C), dynamic cervical implant and anterior cervical discectomy and fusion (ACDF) in the treatment of cervical spondylosis. METHOD: From May 2011 to May 2013, a total of 44 cervical spondylosis patients that received cervical disc arthroplasty (Prodisc-C), dynamic cervical implant (DCI) or ACDF were retrospectively reviewed in Orthopedics Department, Beijing Chaoyang Hospital, Capital Medical University...
July 5, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27437013/clinical-features-of-herniated-disc-at-cervicothoracic-junction-level-treated-by-anterior-approach
#20
Jun Gue Lee, Hyeun Sung Kim, Chang Il Ju, Seok Won Kim
OBJECTIVE: The anterior approach for C7-T1 disc herniation may be challenging because of obstruction by the manubrium and the narrow operative field. This study aimed to investigate the clinical and neurological outcomes of anterior approach for C7-T1 disc herniation. METHODS: We retrospectively evaluated 13 patients who underwent the anterior approach for C7-T1 disc herniation by a single surgeon within a period of 11 years (2003-2014). The minimum follow-up duration was 6 months...
June 2016: Korean Journal of Spine
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