Read by QxMD icon Read

Artificial disc replacement

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
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
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]
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
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
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
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
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
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
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
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
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
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
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
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 disc 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 extra-skeletal soft tissues. However, HO in ADR does not fit this definition precisely, since it originates from vertebral body, making it hard to distinguish radiologically from pre-existing osteophytes...
June 3, 2016: Clinical Spine Surgery
Joseph Spinelli, Christopher J Neal, Michael K Rosner
OBJECTIVE: To present a conversion from an anterior cervical discectomy and fusion (ACDF) to cervical arthroplasty in a 40-year-old, active duty member and perform a review of the literature. METHODS: A helicopter pilot in the U.S. Army underwent a three-level ACDF in 2010 at a nonmilitary institution for symptoms of bilateral upper-extremity radiculopathy. His symptoms resolved; however, per regulations, he was grounded. The patient recently presented at our clinic for evaluation of axial neck and intrascapular pain with radiographic evaluation revealing pseudarthrosis at C6-7 with segmental motion without facet joint degeneration...
June 2016: Military Medicine
Praveen Kumar Pandey, Inder Pawar, Jyoti Gupta, Raaghav Rai Verma
STUDY DESIGN: Single centre, prospective comparative study of prospectively collected outcomes, with a minimum of 12 month follow-up. OBJECTIVES: The primary purpose of the study is to investigate the clinical, functional and radiological outcomes of CTDR in comparison with ACDF in the treatment of single level cervical disc degenerative disease, prospectively. SUMMARY OF BACKGROUND DATA: Cervical total disc replacement (CTDR) has recently been as an alternative to Anterior cervical discectomy and fusion (ACDF) in cervical disc degenerative disease to preserve the motion at the treated level...
May 18, 2016: Spine
D Nečas, M Vrbka, I Křupka, M Hartl, A Galandáková
The objective of the present study is to clarify the lubrication processes within artificial joints considering the ceramic femoral heads focusing on the role of particular proteins. Two optical methods were employed; colorimetric interferometry and fluorescent microscopy. The experiments were conducted in ball-on-disc configuration, where the ball is made from ceramic (Sulox(TM), BIOLOX(®)delta) and the disc from optical glass. The measurements were realized under pure rolling, partial negative and partial positive sliding, to get a complex information about the protein film behaviour under various conditions...
August 2016: Journal of the Mechanical Behavior of Biomedical Materials
Arvind Gopalrao Kulkarni, Vishwanath Mahabaleshwar Patil, Shashidhar Kantharajanna Bangalore, Abhishek Saraf
STUDY DESIGN: Cross-sectional study. PURPOSE: To accurately measure the dimensions of cervical endplates based on computed tomography (CT) scans in Indian population and assess accuracy of match with currently available cervical disc prostheses. OVERVIEW OF LITERATURE: The dimensions of currently available cervical disc replacement implants are based on early published geometrical measurements of vertebrae endplates for Caucasian population...
February 2016: Asian Spine Journal
Vittorio Sala, Claudio Lisi, Giuseppe Di Natali, Simona Zanellato, Anna Dall'Angelo, Carmine Tinelli, Giuseppe Bellantoni, Maurizio Bejor, Elena Dalla Toffola
PURPOSE: To evaluate and compare clinical, functional and quality of life (QOL) outcomes after two types of surgical approach for single level cervical disc herniation: anterior cervical discectomy andfusion (ACDF) with cage and cervical artificial disc replacement (C-ADR). METHOD: 119 patients with cervical disc herniation underwent surgery from January 2007 to December 2010; 55 patients were included in the study (27 ACDF, 28 C-ADR). We performed: a pre and postoperative clinical evaluation of cervicobrachial pain, motor and sensory deficit in the upper limbs; a functional and QOL evaluation with self assessment scales (VAS, NPNQ, SF-36); a postoperative instrumental evaluation of cervical ROM and pain...
October 2015: Giornale Italiano di Medicina del Lavoro Ed Ergonomia
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"