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Artificial disc replacement

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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
#1
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...
November 17, 2016: 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
#2
Tingkui Wu, Hao Liu, Beiyu Wang, Yang Meng
: InstructionAnterior 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 resultinsubsequent 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
#3
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...
October 31, 2016: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/27836574/towards-bioreactor-development-with-physiological-motion-control-and-its-applications
#4
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...
November 8, 2016: 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
#5
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
#6
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
#7
Andreas Reinke, Michael Behr, Alexander Preuss, Jimmy Villard, Bernhard Meyer, Florian Ringel
OBJECT: Total disc replacement (TDR) is typically indicated in young patients with a cervical soft disc herniation. To date, 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...
October 14, 2016: World Neurosurgery
https://www.readbyqxmd.com/read/27658427/applications-of-3d-printing-in-the-management-of-severe-spinal-conditions
#8
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
#9
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
#10
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
https://www.readbyqxmd.com/read/27428486/comparison-of-the-incidence-of-patient-reported-post-operative-dysphagia-between-acdf-with-a-traditional-anterior-plate-and-artificial-cervical-disc-replacement
#11
Yi Yang, Litai Ma, Hao Liu, Yilian Liu, Ying Hong, Beiyu Wang, Chen Ding, Yuxiao Deng, Yueming Song, Limin Liu
PURPOSE: Compared with anterior cervical discectomy and fusion (ACDF), cervical disc replacement (CDR) has provided satisfactory clinical results. The incidence of post-operative dysphagia between ACDF with a traditional anterior plate and CDR remains controversial. Considering the limited studies and knowledge in this area, a retrospective study focusing on post-operative dysphagia was conducted. METHODS: The Bazaz grading system was used to assess the severity of dysphagia at post-operative intervals including 1 week, 1 month, 3 months, 6 months, 12 months and 24 months respectively...
September 2016: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/27428389/biomechanical-effects-of-the-geometry-of-ball-and-socket-artificial-disc-on-lumbar-spine-a-finite-element-study
#12
Jisoo Choi, Dong-Ah Shin, Sohee Kim
STUDY DESIGN: A three dimensional finite element model of intact lumbar spine was constructed and four surgical finite element models implanted with ball-and-socket artificial discs with four different radii of curvature were compared. OBJECTIVE: To investigate biomechanical effects of the curvature of ball-and-socket artificial disc using finite element analysis. SUMMARY OF BACKGROUND DATA: Total disc replacement (TDR) has been accepted as an alternative treatment due to its advantages over spinal fusion methods in degenerative disc disease...
July 14, 2016: Spine
https://www.readbyqxmd.com/read/27399543/345%C3%A2-elective-anterior-cervical-discectomy-and-fusion-vs-cervical-artificial-disc-replacement-a-comparison-of-perioperative-morbidity-and-early-outcomes
#13
Pavan S Upadhyayula, John K Yue, Reid Hoshide, Erik Curtis, Joseph D Ciacci
INTRODUCTION: We conducted a retrospective cohort analysis of early outcomes after elective anterior cervical discectomy and fusion (ACDF) vs cervical artificial disc replacement (C-ADR) using the National Surgical Quality Improvement Program database. Risk factors associated with operation time, hospital length of stay, early complications, and discharge destination were studied. METHODS: Adult patients undergoing elective ACDF or C-ADR were abstracted from American College of Surgeons National Surgical Quality Improvement Program years 2011 to 2014...
August 2016: Neurosurgery
https://www.readbyqxmd.com/read/27399540/342%C3%A2-lumbar-total-disc-replacement-by-the-lateral-approach-up-to-10-year-follow-up
#14
Luiz Pimenta, Luis Marchi, Rodrigo Augusto Amaral, Leonardo Oliveira, Joes Nogueira-Neto, Rubens Jensen, Etevaldo Coutinho
INTRODUCTION: The XL-TDR artificial disc is placed by the lateral approach with maintenance of the anterior longitudinal ligament. The purpose of this study was to analyze results of XL-TDR for the treatment of symptomatic degenerative disc disease. METHODS: This is a prospective nonrandomized single-center study. Sixty cases were enrolled (31 males; 66 levels; average age 42.8 years). Eleven of 60 patients (18%) had not completed at least a 5-year follow-up (FUP), and 49 were enrolled (53 levels) in the analysis...
August 2016: Neurosurgery
https://www.readbyqxmd.com/read/27355727/analysis-of-the-factors-that-could-predict-segmental-range-of-motion-after-cervical-artificial-disc-replacement-a-7-years-follow-up-study
#15
Wei Tian, Han Wang, Kai Yan, Xiao Han, Peihao Jin
STUDY DESIGN: 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 CADR patients and a fine surgical technique. SUMMARY OF BACKGROUND DATA: Segmental ROM is the most important parameter concerning cervical kinematics after a CADR. There are few researches regarding the influencing factors on postoperative ROM, and consistent results have not yet been reported...
June 28, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27355704/artificial-cervical-disc-replacement-for-the-treatment-of-adjacent-segment-disease-after-anterior-cervical-decompression-and-fusion
#16
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 disc 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 (FSUs) adjacent to the fusion site after ACDF...
June 28, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27355702/comparison-of-the-clinical-and-radiographic-results-between-cervical-artificial-disc-replacement-and-anterior-cervical-fusion-a-six-year-prospective-non-randomized-comparative-study
#17
Wei Tian, Kai Yan, Xiao Han, Jie Yu, Peihao Jin, Xiaoguang Han
STUDY DESIGN: Prospective non-randomized comparative study. OBJECTIVE: To compare the long-term clinical and radiographic results of cervical artificial disc replacement (CADR) and anterior cervical discectomy and fusion (ACDF), and to provide our evidence whether CADR could reduce adjacent segment degeneration (ASD). SUMMARY OF BACKGROUND DATA: CADR is widely used in spine surgery today. In spite of the short-term results of it having been ascertained, the long-term results are still under observation...
June 28, 2016: Clinical Spine Surgery
https://www.readbyqxmd.com/read/27355319/biomechanical-analysis-of-a-novel-prosthesis-based-on-the-physiological-curvature-of-endplate-for-cervical-disc-replacement
#18
Cheng-Cheng Yu, Ding-Jun Hao, Da-Geng Huang, Li-Xiong Qian, Hang Feng, Hou-Kun Li, Song-Chuan Zhao
STUDY DESIGN: Biomechanical analysis of a novel prosthesis based on the physiological curvature of endplate was performed. OBJECTIVE: To compare the biomechanical differences between a novel prosthesis based on the physiological curvature of the endplate and the Prestige LP prosthesis after cervical disc replacement (CDR). SUMMARY OF BACKGROUND DATA: Artificial disc prostheses have been widely used to preserve the physiological function of treated and adjacent motion segments in CDR, while most of those present a flat surface instead of an arcuate surface which approximately similar to anatomic structures in vivo...
2016: PloS One
https://www.readbyqxmd.com/read/27345748/a-new-cervical-artificial-disc-prosthesis-based-on-physiological-curvature-of-end-plate-a-finite-element-analysis
#19
Cheng-Cheng Yu, Peng Liu, Da-Geng Huang, Yong-Hong Jiang, Hang Feng, Ding-Jun Hao
STUDY DESIGN: The study aimed to build a new cervical artificial disc C3-C7 segment prosthesis, and perform a biomechanical comparison between the new prosthesis and the Prestige LP prosthesis using a three-dimensional non-linear finite element (FE) model. PURPOSE: The study compared the biomechanical differences between the new cervical artificial disc prosthesis based on the physiological curvature of the end plate and the Prestige LP prosthesis after artificial disc replacement...
June 23, 2016: Spine Journal: Official Journal of the North American Spine Society
https://www.readbyqxmd.com/read/27274317/the-activl-%C3%A2-artificial-disc-a-next-generation-motion-preserving-implant-for-chronic-lumbar-discogenic-pain
#20
REVIEW
James J Yue, Rolando Garcia, Larry E Miller
Degeneration of the lumbar intervertebral discs is a leading cause of chronic low back pain in adults. Treatment options for patients with chronic lumbar discogenic pain unresponsive to conservative management include total disc replacement (TDR) or lumbar fusion. Until recently, only two lumbar TDRs had been approved by the US Food and Drug Administration - the Charité Artificial Disc in 2004 and the ProDisc-L Total Disc Replacement in 2006. In June 2015, a next-generation lumbar TDR received Food and Drug Administration approval - the activL(®) Artificial Disc (Aesculap Implant Systems)...
2016: Medical Devices: Evidence and Research
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