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https://www.readbyqxmd.com/read/28811990/clinical-outcomes-of-total-disc-replacement-versus-anterior-lumbar-interbody-fusion-for-surgical-treatment-of-lumbar-degenerative-disc-disease
#1
Tobias A Mattei, Jennifer Beer, Alisson R Teles, Azeem A Rehman, Jean Aldag, Dzung Dinh
STUDY DESIGN: The authors performed a retrospective controlled study of patients diagnosed with lumbar degenerative disc disease who received surgical intervention (either total disc replacement [TDR]/Activ-L or anterior lumbar interbody fusion [ALIF]) at a single tertiary-care hospital from 2007-2010. OBJECTIVES: To investigate the clinical outcomes after TDR in comparison with ALIF for surgical treatment of lumbar degenerative disc disease (DDD). METHODS: Analyzed data included intra-operative blood loss, time to return to work, and clinical outcomes as evaluated through the Oswestry Disability Index (ODI) and the Visual Analog Scale (VAS) pain questionnaires pre-operatively and at 6 weeks, 3 months, 6 months, and 1 year postoperative follow-up...
August 2017: Global Spine Journal
https://www.readbyqxmd.com/read/28797030/one-step-nucleic-acid-amplification-assay-is-an-accurate-technique-for-sentinel-lymph-node-biopsy-of-breast-cancer-patients-a-meta-analysis
#2
Fang Shi, Qian Zhang, Zhenzhen Liang, Mengmeng Zhang, Xin Liu
BACKGROUND: To estimate the accuracy of one-step nucleic acid amplification (OSNA) assay as an intra-operative sentinel lymph node biopsy (SLNB) for sentinel lymph node (SLN) metastasis in breast cancer. METHODS: PubMed, Cochrane Library and Web of Science databases were searched by two independent reviewers to retrieve literature with per-patient analysis. The deadline was up until December 2016. A meta-analysis was performed using STATA, Meta-Disc, and Revman software...
August 10, 2017: British Journal of Cancer
https://www.readbyqxmd.com/read/28792464/histological-and-immunohistochemical-analyses-of-repair-of-the-disc-in-the-rabbit-temporomandibular-joint-using-a-collagen-template
#3
Kuo-Hwa Wang, Wing P Chan, Li-Hsuan Chiu, Yu-Hui Tsai, Chia-Lang Fang, Charn-Bing Yang, Kuan-Chou Chen, Hung-Li Tsai, Wen-Fu Lai
A previous study demonstrated that the reconstituted type I collagen matrix extracted from rabbit tendons enabled the TMJ disc to regenerate in the rabbit. The aim of this study was to investigate changes in the extracellular matrix (ECM) and mechanisms of regeneration in the TMJ disc. In 36 New Zealand rabbits that underwent a partial discectomy, discs were replaced with reconstituted collagen templates for 3 months. A histological analysis showed that moderate to severe degeneration appeared in partially discectomized joints without implantation...
August 9, 2017: Materials
https://www.readbyqxmd.com/read/28781915/cervical-artificial-disc-extrusion-after-a-paragliding-accident
#4
Tianyi Niu, Haydn Hoffman, Daniel C Lu
BACKGROUND: Cervical total disc replacement (TDR) is an established alternative to anterior cervical discectomy and fusion (ACDF) with excellent long-term outcomes and low failure rates. Cases of implant failure and migration are scarce and primarily limited to several years postoperatively. The authors report a case of anterior extrusion of a C4-C5 ProDisc-C (DePuy Synthes, West Chester, PA, USA) cervical artificial disc (CAD) 14 months after placement due to minor trauma. CASE DESCRIPTION: A 33-year-old female who had undergone C4-C5 CAD implantation presented with neck pain and spasm after experiencing a paragliding accident...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28772532/influence-of-substrate-heating-and-nitrogen-flow-on-the-composition-morphological-and-mechanical-properties-of-sinx-coatings-aimed-for-joint-replacements
#5
Charlotte Skjöldebrand, Susann Schmidt, Vicky Vuong, Maria Pettersson, Kathryn Grandfield, Hans Högberg, Håkan Engqvist, Cecilia Persson
Silicon nitride (SiNx) coatings are promising for joint replacement applications due to their high wear resistance and biocompatibility. For such coatings, a higher nitrogen content, obtained through an increased nitrogen gas supply, has been found to be beneficial in terms of a decreased dissolution rate of the coatings. The substrate temperature has also been found to affect the composition as well as the microstructure of similar coatings. The aim of this study was to investigate the effect of the substrate temperature and nitrogen flow on the coating composition, microstructure and mechanical properties...
February 13, 2017: Materials
https://www.readbyqxmd.com/read/28768775/the-surgical-treatment-of-non-specific-low-back-pain
#6
N V Todd
The National Institute for Health and Care Excellence has issued guidelines that state fusion for non-specific low back pain should only be performed as part of a randomised controlled trial, and that lumbar disc replacement should not be performed. Thus, spinal fusion and disc replacement will no longer be routine forms of treatment for patients with low back pain. This annotation considers the evidence upon which these guidelines are based. Cite this article: Bone Joint J 2017;99-B:1003-1005.
August 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28765799/fortifying-the-bone-implant-interface-part-1-an-in-vitro-evaluation-of-3d-printed-and-tps-porous-surfaces
#7
Regina F MacBarb, Derek P Lindsey, Chelsea S Bahney, Shane A Woods, Mark L Wolfe, Scott A Yerby
BACKGROUND: An aging society and concomitant rise in the incidence of impaired bone health have led to the need for advanced osteoconductive spinal implant surfaces that promote greater biological fixation (e.g. for interbody fusion cages, sacroiliac joint fusion implants, and artificial disc replacements). Additive manufacturing, i.e. 3D-printing, may improve bone integration by generating biomimetic spinal implant surfaces that mimic bone morphology. Such surfaces may foster an enhanced cellular response compared to traditional implant surfacing processes...
2017: International Journal of Spine Surgery
https://www.readbyqxmd.com/read/28752986/analysis-of-medium-long-term-therapeutic-effect-of-pcm-artificial-cervical-disc-replacement
#8
Haibo Li, Yiping Weng, Dong Zhou, Luming Nong, Nanwei Xu
No abstract text is available yet for this article.
July 28, 2017: Panminerva Medica
https://www.readbyqxmd.com/read/28748380/autologous-bone-marrow-concentrate-intradiscal-injection-for-the-treatment-of-degenerative-disc-disease-with-three-year-follow-up
#9
Kenneth A Pettine, Richard K Suzuki, Theodore T Sand, Matthew B Murphy
PURPOSE: The purpose of this study is to assess safety and feasibility of intradiscal bone marrow concentrate (BMC) injections to treat low back discogenic pain as an alternative to surgery with three year minimum follow-up. METHODS: A total of 26 patients suffering from degenerative disc disease and candidates for spinal fusion or total disc replacement surgery were injected with 2 ml autologous BMC into the nucleus pulposus of treated lumbar discs. A sample aliquot of BMC was characterized by flow cytometry and CFU-F assay to determine progenitor cell content...
July 26, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28746177/correlation-between-high-intensity-zone-on-mri-and-discography-in-patients-with-low-back-pain
#10
Huadong Wang, Zhonghai Li, Chunli Zhang, Weisheng Zhang, Li Li, Jidong Guo, Wenwen Wu, Shuxun Hou
The aim of this study was to analyze the correlation between high-intensity zone (HIZ) on magnetic resonance imaging (MRI) of a lumbar disc and positive pain response assessed by discography for the diagnosis and treatment of discogenic low back pain (LBP). Thirty-seven patients aged 21 to 59 years with chronic LBP but without any neurological symptoms or lumbar disc herniation who underwent MRI and subsequent discography were included in this study. During discography, concordant pain was regarded as positive, whereas discordant pain and no pain were regarded as negative...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28736356/finite-element-analysis-of-influence-of-axial-position-of-center-of-rotation-of-a-cervical-total-disc-replacement-on-biomechanical-parameters-simulated-two-level-replacement-based-on-a-validated-model
#11
Yang Li, Zhenjun Zhang, Zhenhua Liao, Zhongjun Mo, Weiqiang Liu
Finite element (FE) models have been widely used to predict biomechanical parameters of the cervical spine. Previous studies investigated the influence of position of rotational centers (RCs) of prostheses on the cervical biomechanical parameters after one-level total disc replacement (TDR). The purpose of this study was to make a further step by exploring the effects of axial position of RCs of prostheses on the cervical biomechanics after 2-level TDR. A validated FE model of C3-C7 segments and 2 prostheses, including the RC located at the superior endplate (SE) and inferior endplate (IE), was developed...
July 20, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28723737/how-to-choose-when-implants-of-adjacent-height-both-fit-the-disc-space-properly-in-single-level-cervical-artificial-disc-replacement
#12
Xin Rong, Jigang Lou, Huibo Li, Yang Meng, Hao Liu
In cervical artificial disc replacement (C-ADR), sometimes we encountered with such cases that implants of adjacent height both fit the target disc space properly. No study was available discussing the choice of implant height and the clinical outcomes under such circumstance. The purpose of this study was to evaluate the impact of different implant heights on the clinical outcomes and radiographic results when the implants of adjacent height both fit the disc space properly. This retrospective study included 34 patients underwent single-level C-ADR at the C5-C6 level at our institution...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28719872/health-related-quality-of-life-in-patients-undergoing-lumbar-total-disc-replacement-a-comparison-with-the-general-population
#13
Pablo Clavel, Gheorghe Ungureanu, Ignasi Catalá, Guillermo Montes, Xavier Málaga, Moisés Ríos
OBJECTIVES: In up to half of the cases, low back pain (LBP) is thought to be related to a degeneration of the lumbar disc. Lumbar total disc replacement (LTDR) emerged as an alternative to fusion, but its use and indications are still subject to debate. The purpose of this paper was to compare Health-related Quality of life (HRQOL) in patients undergoing LTDR for one or two-level degenerative disc disease (DDD) with the paired age and gender general population values and to assess functional disability and residual pain at one year after the surgical procedure...
September 2017: Clinical Neurology and Neurosurgery
https://www.readbyqxmd.com/read/28718697/pain-drawings-predict-outcome-of-surgical-treatment-for-degenerative-disc-disease-in-the-cervical-spine
#14
Anna MacDowall, Yohan Robinson, Martin Skeppholm, Claes Olerud
INTRODUCTION: Pain drawings have been frequently used in the preoperative evaluation of spine patients. For lumbar conditions comprehensive research has established both the reliability and predictive value, but for the cervical spine most of this knowledge is lacking. The aims of this study were to validate pain drawings for the cervical spine, and to investigate the predictive value for treatment outcome of four different evaluation methods. METHODS: We carried out a post hoc analysis of a randomized controlled trial, comparing cervical disc replacement to fusion for radiculopathy related to degenerative disc disease...
July 18, 2017: Upsala Journal of Medical Sciences
https://www.readbyqxmd.com/read/28718168/higher-reoperation-rate-following-cervical-disc-replacement-in-a-retrospective-long-term-comparative-study-of-715-patients
#15
Martin Skeppholm, Thomas Henriques, Tycho Tullberg
PURPOSE: To evaluate rates of secondary surgical interventions in a cohort treated with fusion (ACDF), artificial disc replacement (ADR) or a posterior surgical procedure (PP) because of a cervical degenerative pathology. METHODS: 715 patients treated with any primary cervical surgical intervention between the years 2000 and 2010 were retrospectively evaluated regarding frequency of secondary surgery between the years 2000 and 2015, thus giving a follow-up time of minimum 5 years...
July 17, 2017: European Spine Journal
https://www.readbyqxmd.com/read/28708222/multimodal-imaging-in-a-patient-with-traumatic-choroidal-ruptures
#16
Luisa Pierro, Chiara Giuffrè, Alessandro Rabiolo, Marco Gagliardi, Alessandro Arrigo, Francesco Bandello
PURPOSE: To describe the case and the follow-up of a traumatic choroidal rupture characterized by means of multimodal imaging including color fundus photographs, infrared reflectance, blue autofluorescence, swept-source optical coherence tomography, fluorescein angiography (FA), indocyanine green angiography (ICGA), and optical coherence tomography angiography (OCT-A). METHODS: Case report. RESULTS: A 17-year-old boy was referred to our clinic complaining of reduction in visual acuity in the right eye (RE) after a blunt ocular trauma during a soccer match...
July 5, 2017: European Journal of Ophthalmology
https://www.readbyqxmd.com/read/28700452/the-surgical-treatment-of-cervical-radiculopathy-meta-analysis-of-randomized-controlled-trials
#17
Gabriel Gutman, Derek H Rosenzweig, Jeff D Golan
STUDY DESIGN: Meta-analysis of published randomized controlled trials (RCTs). OBJECTIVE: To determine whether anterior cervical discectomy and fusion (ACDF), cervical disc replacement (CDR) or minimally invasive posterior cervical foraminotomy (MI-PCF) provides the best outcomes for patients with symptomatic single-level, single-side, cervical radiculopathy. SUMMARY OF BACKGROUND DATA: The surgical treatment of cervical radiculopathy is still controversial...
July 11, 2017: Spine
https://www.readbyqxmd.com/read/28698718/the-holy-grail-of-orthopedic-surgery-mesenchymal-stem-cells-their-current-uses-and-potential-applications
#18
REVIEW
Roberto Berebichez-Fridman, Ricardo Gómez-García, Julio Granados-Montiel, Enrique Berebichez-Fastlicht, Anell Olivos-Meza, Julio Granados, Cristina Velasquillo, Clemente Ibarra
Only select tissues and organs are able to spontaneously regenerate after disease or trauma, and this regenerative capacity diminishes over time. Human stem cell research explores therapeutic regenerative approaches to treat various conditions. Mesenchymal stem cells (MSCs) are derived from adult stem cells; they are multipotent and exert anti-inflammatory and immunomodulatory effects. They can differentiate into multiple cell types of the mesenchyme, for example, endothelial cells, osteoblasts, chondrocytes, fibroblasts, tenocytes, vascular smooth muscle cells, and sarcomere muscular cells...
2017: Stem Cells International
https://www.readbyqxmd.com/read/28685344/lumbar-total-disc-arthroplasty-outdated-surgery-or-here-to-stay-procedure-a-systematic-review-of-current-literature
#19
REVIEW
Matteo Formica, Stefano Divano, Luca Cavagnaro, Marco Basso, Andrea Zanirato, Carlo Formica, Lamberto Felli
BACKGROUND: The purpose of this study was to summarize the available evidence about total lumbar disc replacement (TDR), focusing our attention on four main topics: clinical and functional outcomes, comparison with fusion surgery results, rate of complications and influence on sagittal balance. MATERIALS AND METHODS: We systematically searched Pubmed, Embase, Medline, Medscape, Google Scholar and Cochrane library databases in order to answer our four main research questions...
July 6, 2017: Journal of Orthopaedics and Traumatology: Official Journal of the Italian Society of Orthopaedics and Traumatology
https://www.readbyqxmd.com/read/28679056/self-healing-dynamic-hydrogel-as-injectable-shock-absorbing-artificial-nucleus-pulposus
#20
Adrián Pérez-San Vicente, Marianna Peroglio, Manuela Ernst, Pablo Casuso, Iraida Loinaz, Hans-Jürgen Grande, Mauro Alini, David Eglin, Damien Dupin
The intervertebral discs (IVDs) provide unique flexibility to the spine and exceptional shock absorbing properties under impact. The inner core of the IVD, the nucleus pulposus (NP) is responsible for this adaptive behavior. Herein, we evaluate an injectable, self-healing dynamic hydrogel (DH) based on gold(I)-thiolate/disulfide (Au-S/SS) exchange as NP replacement in a spine motion segment model. For the first time, we report the application of dynamic covalent hydrogels inside biological tissues. The dynamic exchange between Au-S species and disulfide bonds (SS) resulted in self-healing ability and frequency-dependent stiffness of the hydrogel, which was also confirmed in spine motion segments...
July 19, 2017: Biomacromolecules
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