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https://www.readbyqxmd.com/read/27911456/mid-term-results-of-recap-magnum-taperloc-metal-on-metal-total-hip-arthroplasty-with-mean-follow-up-of-7-1-years
#1
Antonios A Koutalos, Aristotelis Kourtis, Ian C Clarke, Evert J Smith
INTRODUCTION: Despite enthusiasm for metal-on-metal bearings, disappointing short- to mid-term outcomes has all but halted the use of this bearing articulation. This review presents mid-term results for the ReCap Magnum total hip replacement. PATIENTS AND METHODS: This prospective study evaluated 79 ReCap/Magnum/Taperloc total hip replacements with mean follow-up of 7.1 (range 3.7-9.2) years. 43 were female and 36 male. Metal ions were measured and radiographic measurement included a 'margin of safety' angle to quantify risk of edge loading...
December 2, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/27888094/nano-analyses-of-wear-particles-from-metal-on-metal-and-non-metal-on-metal-dual-modular-neck-hip-arthroplasty
#2
Zhidao Xia, Benjamin F Ricciardi, Zhao Liu, Christopher von Ruhland, Mike Ward, Alex Lord, Louise Hughes, Steven R Goldring, Edward Purdue, David Murray, Giorgio Perino
Increased failure rates due to metallic wear particle-associated adverse local tissue reactions (ALTR) is a significant clinical problem in resurfacing and total hip arthroplasty. Retrieved periprosthetic tissue of 53 cases with corrosion/conventional metallic wear particles from 285 revision operations for ALTR was selected for nano-analyses. Three major classes of hip implants associated with ALTR, metal-on-metal hip resurfacing arthroplasty (MoM HRA) and large head total hip replacement (MoM LHTHA) and non-metal-on-metal dual modular neck total hip replacement (Non-MoM DMNTHA) were included...
November 22, 2016: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/27874913/metal-on-metal-total-hip-arthroplasty-quality-of-online-patient-information
#3
Geoff Crozier-Shaw, Joseph M Queally, John F Quinlan
Metal-on-metal total hip arthroplasty (THA) has generated much attention in the media because of early failure of certain implant systems. This study assessed the quality, accuracy, and readability of online information on metal-on-metal THA. The search terms "metal-on-metal hip replacement" and "metal hip replacement" were entered into the 3 most popular search engines. Information quality was assessed with the DISCERN score and a specific metal-on-metal THA content score. Accuracy of information was assessed with a customized score...
November 22, 2016: Orthopedics
https://www.readbyqxmd.com/read/27857822/revision-of-metal-on-metal-hip-arthroplasty-with-well-fixed-and-positioned-acetabular-component-using-a-dual-mobility-head-and-review-of-literature
#4
Guillem Figueras, Ramón Vives Planell, Ramón Serra Fernàndez, Joan Camí Biayna
BACKGROUND: As a consequence of use of metal-on-metal hip arthroplasties some patients have precised revision for pain or metal hipersensivity reactions among other causes. We propose to salvage monoblock acetabular component and femoral component using a dual-mobility head and perform a lower morbidity operation in young patients preserving host bone stock in cases with well fixed and positioned components. OBJECTIVE: (1) What clinical problems have been reported in patients with Metal-on-metal hip arthroplasties? (2) Could the tribocorrosion potentially cause a fracture of neck femoral component? (3) Can be the dual-mobility head a recourse in metal-on-metal hip revision? METHODS: Ten patients were revised for pain or/and raised Cobalt/Chromium levels between August 2012 and December 2015...
2016: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/27857480/differences-in-concentration-of-metal-debris-in-blood-serum-and-plasma-samples-of-patients-with-metal-on-metal-hip-resurfacing-arthroplasty
#5
M Khan, J H Kuiper, Christine Sieniawska, J B Richardson
BACKGROUND/AIMS: Cobalt and chromium are released from MOM hips and their precise nature (ions/particles) is not known. Their distribution in serum, plasma, and whole blood may help to determine their nature. METHODS: We measured cobalt and chromium concentrations in plasma, serum, and whole blood samples of patients with resurfacing MOM hips. RESULTS: We found that chromium concentration was highest in plasma, followed by serum and whole blood...
December 2016: Journal of Orthopaedics
https://www.readbyqxmd.com/read/27852907/scoring-the-current-risk-stratification-guidelines-in-follow-up-evaluation-of-patients-after-metal-on-metal-hip-arthroplasty-a-proposal-for-a-metal-on-metal-risk-score-supporting-clinical-decision-making
#6
Daniel K Hussey, Rami Madanat, Gabrielle S Donahue, Ola Rolfson, Charles R Bragdon, Orhun K Muratoglu, Henrik Malchau
BACKGROUND: In the follow-up evaluation of patients with metal-on-metal (MoM) hip replacements, current evidence suggests that orthopaedic surgeons should avoid reliance on any single investigative tool. Current risk stratification guidelines can be difficult to interpret because they do not provide guidance when there are several risk factors in different groups (high and low risk). To improve the clinical utility of risk stratification guidelines, we designed a scoring system to assess the risk of revision...
November 16, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27844400/editor-s-spotlight-take-5-poor-survivorship-and-frequent-complications-at-a-median-of-10-years-after-metal-on-metal-hip-resurfacing-revision
#7
Seth S Leopold
No abstract text is available yet for this article.
November 14, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27835611/effect-of-cobalt-mediated-toll-like-receptor-4-activation-on-inflammatory-responses-in-endothelial-cells
#8
Sami A Anjum, Helen Lawrence, James P Holland, John A Kirby, David J Deehan, Alison J Tyson-Capper
Cobalt-containing metal-on-metal hip replacements are associated with adverse reactions to metal debris (ARMD), including inflammatory pseudotumours, osteolysis, and aseptic implant loosening. The exact cellular and molecular mechanisms leading to these responses are unknown. Cobaltions (Co2+) activate human Toll-like receptor 4 (TLR4), an innate immune receptor responsible for inflammatory responses to Gram negative bacterial lipopolysaccharide (LPS).We investigated the effect of Co2+-mediated TLR4 activation on human microvascular endothelial cells (HMEC-1), focusing on the secretion of key inflammatory cytokines and expression of adhesion molecules...
November 9, 2016: Oncotarget
https://www.readbyqxmd.com/read/27834460/a-randomised-controlled-clinical-study-on-total-hip-arthroplasty-using-4-different-bearings-results-after-10-years
#9
Arne Borgwardt, Bo Zerahn, Sandra D Fabricius, Tine H Bertelsen, Henrik Daugaard, Søren Ribel-Madsen
PURPOSE: To compare 4 different bearings in total hip arthroplasty (THA) in a randomised controlled clinical study on clinical performance. METHODS: 393 patients with osteoarthritis of the hip or avascular necrosis were included and allocated to 1 of the head-and-cup couples zirconia-on-polyethylene (group A), metal-on-metal (group B), zirconia-on-polyethylene with the liner moulded into the shell (group C), or alumina-on-alumina (group D). In the individual case the surgeon could choose other implants if indicated...
November 3, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/27829734/601-metal-on-metal-total-hip-replacements-with-36%C3%A2-mm-heads-a-5-minimum-year-follow-up-levels-of-armd-remain-low-despite-a-comprehensive-screening-program
#10
Amit Atrey, Alister Hart, Nasir Hussain, Jonathon Waite, Andrew J Shepherd, Steve Young
BACKGROUND: We conducted a retrospective study to assess the clinical outcome, failure rate, and reason for failure of a large consecutive series of 36 mm MoM Corail/Pinnacle total hip replacements (THRs). METHODS: Between 2006 and 2011, 601 consecutive 36 mm MoM THRs were performed (585 patients). Patients were followed according to the UK Medicines and Healthcare Products Regulatory Agency (MHRA) guidelines. All patients were accounted for and 469 patients (78%) were clinically and radiographically assessed...
March 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/27821101/factors-associated-with-symptomatic-pseudotumors-following-metal-on-metal-total-hip-arthroplasty
#11
Masahiro Hasegawa, Yohei Naito, Toshio Yamaguchi, Shinichi Miyazaki, Hiroki Wakabayashi, Akihiro Sudo
BACKGROUND: Pseudotumors associated with metal-on-metal hips can be symptomatic or asymptomatic. The purpose of this study was to identify the characteristics of pseudotumors associated with pain. METHODS: A total of 239 large-diameter, metal-on-metal total hip arthroplasties (THAs) were performed in 222 patients. Screening for pseudotumors was performed using magnetic resonance imaging (MRI) in all patients who underwent metal-on-metal THA, and 57 patients with 62 affected hips showed pseudotumors...
November 7, 2016: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/27817993/patient-reported-outcomes-after-revision-of-metal-on-metal-total-bearings-in-total-hip-arthroplasty
#12
Ana Mata-Fink, Daniel J Philipson, Benjamin J Keeney, Dipak B Ramkumar, Wayne E Moschetti, Ivan M Tomek
BACKGROUND: Failure of metal-on-metal (MOM) total hip arthroplasty (THA) bearings is often accompanied by an aggressive local reaction associated with destruction of bone, muscle, and other soft tissues around the hip. Little is known about whether patient-reported physical and mental function following revision THA in MOM patients is compromised by this soft tissue damage, and whether revision of MOM THA is comparable with revision of hard-on-soft bearings such as metal-on-polyethylene (MOP)...
October 11, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27807111/cost-analysis-of-ceramic-heads-in-primary-total-hip-arthroplasty
#13
Keith J Carnes, Susan M Odum, Jennifer L Troyer, Thomas K Fehring
BACKGROUND: The advent of adverse local tissue reactions seen in metal-on-metal bearings, and the recent recognition of trunnionosis, have led many surgeons to recommend ceramic-on-polyethylene articulations for primary total hip arthroplasty. However, to our knowledge, there has been little research that has considered whether the increased cost of ceramic provides enough benefit over cobalt-chromium to justify its use. The primary purpose of this study was to compare the cost-effectiveness of ceramic-on-polyethylene implants and metal-on-polyethylene implants in patients undergoing total hip arthroplasty...
November 2, 2016: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/27802289/has-metal-on-metal-resurfacing-been-a-cost-effective-intervention-for-health-care-providers-a-registry-based-study
#14
Ruth Pulikottil-Jacob, Martin Connock, Ngianga-Bakwin Kandala, Hema Mistry, Amy Grove, Karoline Freeman, Matthew Costa, Paul Sutcliffe, Aileen Clarke
BACKGROUND: Total hip replacement for end stage arthritis of the hip is currently the most common elective surgical procedure. In 2007 about 7.5% of UK implants were metal-on-metal joint resurfacing (MoM RS) procedures. Due to poor revision performance and concerns about metal debris, the use of RS had declined by 2012 to about a 1% share of UK hip procedures. This study estimated the lifetime cost-effectiveness of metal-on-metal resurfacing (RS) procedures versus commonly employed total hip replacement (THR) methods...
2016: PloS One
https://www.readbyqxmd.com/read/27798788/erratum-to-can-wear-explain-the-histological-variation-around-metal-on-metal-total-hips
#15
Edward Ebramzadeh, Patricia Campbell, Timothy L Tan, Scott D Nelson, Sophia N Sangiorgio
No abstract text is available yet for this article.
October 31, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27791245/revision-rates-for-metal-on-metal-hip-resurfacing-and-metal-on-metal-total-hip-arthroplasty-a-systematic-review
#16
Sofie-Amalie L Ras Sørensen, Henrik L Jørgensen, Sune L Sporing, Jes B Lauritzen
PURPOSE: To compare revision rates of metal-on-metal (MoM) hip resurfacing (HRS) and MoM total hip arthroplasty (THA), as well as the primary causes for revisions. METHODS: The PubMed database was queried for potentially relevant articles addressing MoMTHA and MoMHRS, a total of 51 articles were included. RESULTS: The review includes a total number of 5,399 MoMHRS and 3,244 THA prosthesis and the reasons for prosthesis failure were divided into 7 categories and the main causes discussed...
October 27, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/27791239/what-is-the-natural-history-of-asymptomatic-pseudotumours-in-metal-on-metal-hip-resurfacing-patients
#17
Gulraj S Matharu, Simon J Ostlere, Hemant G Pandit, David W Murray
PURPOSE: We assessed the natural history of asymptomatic pseudotumours associated with metal-on-metal hip resurfacings (MoMHRs), and factors associated with future revision. METHODS: In 2007-2008, we identified 25 MoMHRs (21 patients; mean age 59.9 years; 76% female) with asymptomatic pseudotumours. All patients underwent identical initial assessment (ultrasound, blood metal ions, radiographs, Oxford Hip Score [OHS]) and were considered asymptomatic because they denied experiencing hip symptoms, were satisfied with their MoMHR surgery, and had good or excellent OHSs (≥34)...
October 26, 2016: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/27783837/comparison-of-complications-following-revision-of-metal-on-metal-versus-metal-on-polyethylene-total-hip-arthroplasty
#18
Shoji Nishio, Shigeo Fukunishi, Shinichi Yoshiya, David C Sing, Erik N Hansen, Thomas P Vail
The aim of this study was to examine the clinical characteristics of patients who required revision and the rate of early complications after revision for metal-on-metal total hip arthroplasty (MOM THA) and metal-on-polyethylene total hip arthroplasty (MOP THA). Matched cohorts were selected by retrospective review from a single-center database of revision THAs for failed MOM and MOP THAs from 2010 to 2014. A total of 140 hips in 140 patients comprised the study population; 39 revisions were performed for failed MOM THAs (MOM group), and 101 revisions were performed for failed MOP THAs (MOP group)...
October 25, 2016: Orthopedics
https://www.readbyqxmd.com/read/27776910/the-outcomes-following-revision-of-monoblock-metal-on-metal-acetabular-components-for-painful-micromotion-in-the-absence-of-adverse-local-tissue-reaction-to-metal
#19
Sujith Konan, Donald S Garbuz, Bassam A Masri, Clive P Duncan
BACKGROUND: Revision hip arthroplasty for metal-on-metal arthroplasty (MOMA) in the presence of an adverse local tissue reaction (ALTR) has been associated with compromised outcomes. We hypothesized that revision of MOMA for painful micromotion of the cup, in the absence of ALTR, would have a more favorable outcome. METHODS: We reviewed our database for Durom acetabular shell revision with minimum 24 months (24 months to 8 years) follow-up. Patients with a diagnosis of painful micromotion in the absence of pseudotumor was identified...
September 28, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27767003/surgical-site-infections-following-birmingham-hip-resurfacing
#20
Ashish Bhargava, Madiha Salim, Harsha V Banavasi, Vijay Neelam, Richmund Wenzel, Kristin L Sims, Sorabh Dhar, Keith S Kaye
The Birmingham Hip Resurfacing procedure (BHR) is metal-on-metal resurfacing procedure for hip arthritis. BHR was associated with low risk of surgical site infection (SSI; 0.6%). In addition to antimicrobials, superficial SSIs were treated with incision and drainage, whereas deep incisional or organ-space SSIs required removal of prosthesis. Infect Control Hosp Epidemiol 2016;1-4.
November 2016: Infection Control and Hospital Epidemiology
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