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Hip resurface

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https://www.readbyqxmd.com/read/28931340/lessons-learnt-from-early-failure-of-a-patient-trial-with-a-polymer-on-polymer-resurfacing-hip-arthroplasty
#1
Job L C Van Susante, Nico Verdonschot, L Paul A Bom, Pawel Tomaszewski, Pat Campbell, Edward Ebramzadeh, B Wim Schreurs
Background and purpose - Hip resurfacing (HR) is a treatment option promoted for hip arthritis in young and active patients. However, adverse reactions to metal are a concern and the search for non-metallic bearing options proceeds. We present the first clinical study performed in patients using a newly developed hydrophilic polymer-on-polymer hip resurfacing device. Patients and methods - After performing extensive hip simulator tests, biocompatibility testing and animal tests (ISO 14242-1,3; 10993-3,4,5,10,11), approval was obtained from the IRB committee to enroll 15 patients in the first clinical study in humans using this experimental polymer-on-polymer hip resurfacing device...
September 21, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28926394/armd-and-presumed-dangerous-commentary-on-an-article-by-gulraj-s-matharu-bsc-hons-mrcs-mres-et-al-blood-metal-ion-thresholds-to-identify-patients-with-metal-on-metal-hip-implants-at-risk-of-adverse-reactions-to-metal-debris-an-external-multicenter-validation
#2
COMMENT
https://www.readbyqxmd.com/read/28926382/blood-metal-ion-thresholds-to-identify-patients-with-metal-on-metal-hip-implants-at-risk-of-adverse-reactions-to-metal-debris-an-external-multicenter-validation-study-of-birmingham-hip-resurfacing-and-corail-pinnacle-implants
#3
MULTICENTER STUDY
Gulraj S Matharu, Fiona Berryman, Andrew Judge, Aleksi Reito, Jamie McConnell, Olli Lainiala, Stephen Young, Antti Eskelinen, Hemant G Pandit, David W Murray
BACKGROUND: The authors of recent studies have reported newly devised implant-specific blood metal ion thresholds to predict adverse reactions to metal debris (ARMD) in patients who have undergone unilateral or bilateral metal-on-metal (MoM) hip arthroplasty. These thresholds were most effective for identifying patients at low risk of ARMD. We investigated whether these newly devised blood metal ion thresholds could effectively identify patients at risk of ARMD after MoM hip arthroplasty in an external cohort of patients...
September 20, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/28885647/10-year-results-of-the-birmingham-hip-resurfacing-a-non-designer-case-series
#4
Thomas J A Hunter, Thomas S Moores, David Morley, Gopikanthan Manoharan, Simon G Collier, Phillip J Shaylor
INTRODUCTION: Recent controversies surrounding metal-on-metal (MoM) hip resurfacing has led to a substantial decline in its use. Despite this, there is good evidence to support the use of specific implants in select patients. PATIENTS AND METHODS: A retrospective analysis of Birmingham Hip Resurfacing (BHR) patients with a minimum of 10 years follow-up was performed. Functional scoring was performed with the Oxford Hip Score (OHS) and failure was defined as revision for any cause...
September 5, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/28880500/hip-resurfacing
#5
(no author information available yet)
No abstract text is available yet for this article.
August 2017: Clinical Privilege White Paper
https://www.readbyqxmd.com/read/28878517/comparison-of-metal-ion-levels-in-patients-with-hip-resurfacing-versus-total-hip-arthroplasty
#6
Craig W Forsthoefel, Nicholas M Brown, Mark L Barba
Mechanical wear at the articular surface and corrosive processes at modular junctions, such as the trunnion, are responsible for metal ions production. We retrospectively reviewed 64 patients who underwent THA with a metal on metal bearing surface and 34 patients with hip Resurfacing. Metal ion measurements, six-week post-op radiographs, and functional scores were included in the analysis. Cobalt ion levels were significantly elevated in THA patients, 2.95 μg/L as compared to resurfacing patients, (2.95 versus 1...
December 2017: Journal of Orthopaedics
https://www.readbyqxmd.com/read/28869636/structure-and-corrosion-resistance-of-co-cr-mo-alloy-used-in-birmingham-hip-resurfacing-system
#7
Ewa Dobruchowska, Monika Paziewska, Krzysztof Przybyl, Kazimierz Reszka
PURPOSE: The endoprostheses made of cobalt-chromium-molybdenum (Co-Cr-Mo) alloys belong to the group of the most popular metallic implants used for reconstruction of hip joints. For such biomaterials, the primary goal is a correct and long-term functioning in the aggressive environment of body fluids. Therefore, the purpose of this study was to examine both the morphology and the corrosion resistance of implants made of the cobalt alloy used in Birmingham Hip Resurfacing (BHR) system (Smith & Nephew)...
2017: Acta of Bioengineering and Biomechanics
https://www.readbyqxmd.com/read/28856453/long-term-results-of-birmingham-hip-resurfacing-arthroplasty-in-asian-patients
#8
Keisuke Uemura, Masaki Takao, Hidetoshi Hamada, Takashi Sakai, Kenji Ohzono, Nobuhiko Sugano
Several reports have shown good long-term results with the Birmingham hip resurfacing (BHR) arthroplasty, but little is known about the results in Asian countries where there is a high prevalence of osteonecrosis and developmental dysplasia of the hip, and many females with small femoral head sizes. Therefore, we retrospectively evaluated the long-term clinical results of the BHR in 112 Japanese patients (53 males and 59 females-130 hips) with an average age of 52 years. Implant survivorship was analyzed using the Kaplan-Meier method with the endpoint being revision for any reason...
August 30, 2017: Journal of Artificial Organs: the Official Journal of the Japanese Society for Artificial Organs
https://www.readbyqxmd.com/read/28832291/-increased-mortality-in-metal-on-metal-versus-non-metal-on-metal-primary-total-hip-arthroplasty-at-10-years-and-longer-follow-up-a-systematic-review-and-meta-analysis
#9
B G Pijls, J M T A Meessen, J W Schoones, M Fiocco, H J L van der Heide, A Sedrakyan, R G H H Nelissen
OBJECTIVE: To determine the mortality and the morbidity in patients with metal-on-metal articulations (MOM THA) when compared to patients with non-metal-on-metal articulations (non-MOM THA) after primary total hip arthroplasty. DESIGN: Systematic review, meta-analyses and meta-regression (registration: PROSPERO 2014:CRD42014007417). METHOD: Search of PubMed, MEDLINE, EMBASE, Web of Science, Cochrane, CINAHL, AcademicSearchPremier, ScienceDirect, Wiley and clinical trial registers...
2017: Nederlands Tijdschrift Voor Geneeskunde
https://www.readbyqxmd.com/read/28819826/the-outcome-of-the-partial-resurfacing-arthroplasty-of-the-hip-shows-high-numbers-of-failures-and-conversion-to-total-arthroplasty
#10
Thilo Floerkemeier, Stefan Budde, Nils Wirries, Gabriela von Lewinski, Henning Windhagen, Marco Ezechieli
PURPOSE: Local cartilage and bony defects, which are too large for joint preserving cartilage treatment are difficult to treat. The implantation of a mini-resurfacing implant (Hemicap®, 2med, Hamburg, Germany) may be a possible alternative treatment for these patients. This partial replacement fills the defect and restores a smooth and continuous articular surface. The aim of this study was to determine short- to midterm results of the treatment of local cartilage defects of the femoral head using the Hemicap®...
August 17, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28790470/management-guidelines-for-metal-on-metal-hip-resurfacing-arthroplasty-a-strategy-on-followup
#11
Naoki Nakano, Andrea Volpin, Jonathan Bartlett, Vikas Khanduja
Despite the initial promise of metal-on-metal (MoM) implants as the ideal bearing surface for hip replacements and resurfacings, high short term failure rates due to an adverse reaction to metal debris (ARMD) have led to a dramatic reduction in the number of MoM implants used in the modern era. With over one million patients worldwide having undergone hip operations utilizing a MoM bearing surface, the long term outcomes for such patients remains unknown, and there is much debate as to the most effective management of these patients...
July 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28781016/blood-metal-ion-levels-have-limited-utility-in-the-surveillance-of-asymptomatic-large-head-metal-on-metal-total-hip-arthroplasties
#12
Manish Kiran, Catherine Armstrong, Deepak Shivarathre, Viju K Peter
BACKGROUND: Blood cobalt (Co) and chromium (Cr) ion levels have been used as surveillance tools for adverse reaction to metal debris (ARMD) in metal-on-metal (MoM) articulations with varying thresholds in different countries. The aim of our study is to present the serial 12-year blood Co and Cr levels in a cohort of MoM total hip arthroplasties (THAs) with femoral head size ≥36 mm and analyze their utility in asymptomatic patients at current thresholds. METHODS: A total of 256 patients with unilateral MoM THA with femoral head size ≥36 mm were included in this study with data collected prospectively...
July 20, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28754580/microstructure-and-surface-damage-in-retrieved-metal-on-metal-hip%C3%A2-arthroplasties
#13
Mariano Fernández-Fairen, Miquel Punset, Antonio Murcia-Asensio, Francisco Ferrero-Manzanal, José Sueiro, Javier Gil
BACKGROUND: Besides promising results of metal-on-metal (MOM) hip arthroplasty (HA), frequent failures have been reported even in the short term. Many host, surgical, design, metallurgical, and processing factors have been evoked in the base of these events. We have tried to characterize and to evaluate metallurgical and processing features present in this type of implants. METHODS: The acetabular and femoral components of 20 MOM HAs collected from a multicenter retrieval program were examined...
July 8, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28750857/interventions-for-improving-hip-resurfacing-outcomes-in-women-a-high-volume-retrospective-study
#14
Emily B Gaillard, Melissa D Gaillard, Thomas P Gross
BACKGROUND: Women seeking surgical intervention for their hip disorders will often find total hip arthroplasty (THA) presented as their only option. THA, when compared with hip resurfacing arthroplasty, removes substantially more bone-stock, limits range-of-motion, exhibits increased dislocation risk, and presents greater overall 10-year mortality rate. Despite these risks, most surgeons continue to select against women for hip resurfacing because registries notoriously report inferior survivorship when compared with men and THA...
June 9, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28723917/evidence-base-and-practice-variation-in-acute-care-processes-for-knee-and-hip-arthroplasty-surgeries
#15
Marcel Mayer, Justine Naylor, Ian Harris, Helen Badge, Sam Adie, Kathryn Mills, Joseph Descallar
BACKGROUND: Lack of evidence contributes to unnecessary variation in treatment costs and outcomes. This study aimed to identify from interventions historically used for total knee or hip arthroplasty (TKA, THA): i) if routine use is supported by high-level evidence; ii) whether surgeon use aligns with the evidence. METHODS: Part 1: Systematic search of electronic library databases for systematic reviews and practice guidelines concerning seven acute-care interventions...
2017: PloS One
https://www.readbyqxmd.com/read/28715928/lack-of-evidence-the-anti-stepwise-introduction-of-metal-on-metal-hip-replacements
#16
REVIEW
Aleksi Reito, Lari Lehtovirta, Olli Lainiala, Keijo Mäkelä, Antti Eskelinen
Background and purpose - Orthopedics and especially joint replacement surgery have had more than their fair share of unsuccessful innovations that have violated widely endorsed principles for the introduction of new surgical innovations. We aimed to investigate (1) the trends in the use of the Birmingham Hip Resurfacing (BHR), the ASR hip resurfacing (ASR HRA) and the ASR XL total hip replacement (ASR XL THR) system with very different market approval processes and (2) whether their use was corroborated by clinical trials published in the peer-reviewed literature...
October 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/28711342/birmingham-hip-resurfacing-vs-total-hip-arthroplasty-a-matched-pair-comparison-of-clinical-outcomes
#17
Victor R Ortiz-Declet, David A Iacobelli, Leslie C Yuen, Itay Perets, Austin W Chen, Benjamin G Domb
BACKGROUND: Birmingham hip resurfacing (BHR) has proven to be a good alternative for younger patients with osteoarthritis. Some have asserted that BHR may yield outcomes which are superior to total hip arthroplasty (THA), and that some studies which failed to show a difference were plagued by ceiling effects and lack of sensitivity of outcome measures. The purpose of this study is to compare outcomes of BHR and THA using the "Forgotten Joint" Score-12 (FJS), a more sensitive score with lesser vulnerability to the ceiling effect...
June 23, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/28663390/risk-factors-for-wear-related-failures-after-hip-resurfacing-in-patients-with-a-low-contact-patch-to-rim-distance
#18
H C Amstutz, M J Le Duff, S K Bhaurla
AIMS: A contact patch to rim (CPR) distance of < 10 mm has been associated with edge-loading and excessive wear. However, not all arthroplasties with a low CPR distance show problems with wear. Therefore, CPR distance may not be the only variable affecting the post-operative metal ion concentrations. PATIENTS AND METHODS: We used multiple logistic regression to determine what variables differed between the patients who had high and low cobalt (CoS) and chromium (CrS) serum ion concentrations within a cohort of patients with low (< 10 mm) CPR distances...
July 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28660477/correlation-of-serum-metal-ion-levels-with-pathological-changes-of-armd-in-failed-metal-on-metal-hip-resurfacing-arthroplasties
#19
George Grammatopoulos, Mitsuru Munemoto, Athanasios Pollalis, Nicholas A Athanasou
BACKGROUND: Metal-on-metal-hip-resurfacing arthroplasties (MoMHRAs) have been associated with an increased failure rates due to an adverse-response-to-metal-debris (ARMD) associated with a spectrum of pathological features. Serum levels of cobalt (Co) and chromium (Cr) are used to assess MoMHRAs, with regard to ARMD, but it is not certain whether ion levels correlate with pathological changes in periprosthetic tissues. METHODS: Serum Co and Cr levels were correlated with histological findings in 38 revised MoMHRAs (29 pseudotumour cases and 9 non-pseudotumour cases revised for pain)...
August 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28660436/adventure-sports-and-sexual-freedom-hip-replacement-the-tripolar-hip
#20
James W Pritchett
Certain athletic activities and lifestyles require a completely stable and very mobile hip. Total hip replacement with a natural femoral head size and two mobile-bearing surfaces (i.e., a "tripolar" prosthesis) is the most stable prosthesis. Elegant design and wear-resistant bearing surfaces are the keys to long-term implant survivorship. The hypothesis is that a ceramic-coated tripolar prosthesis using highly cross-linked polyethylene can provide full function and complete stability with low wear. This study sought to determine: (1) patient-reported outcomes, (2) functional outcomes, (3) implant survivorship and complications, and (4) postoperative sexual limitations...
June 28, 2017: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
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