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Metal-on-metal

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https://www.readbyqxmd.com/read/29135673/myocardial-cobalt-levels-are-elevated-in-the-setting-of-total-hip-arthroplasty
#1
Cody C Wyles, T Carson Wright, Melanie C Bois, Md Shahrier Amin, Ahmed Fayyaz, Sarah M Jenkins, Saranya P Wyles, Patrick L Day, David L Murray, Robert T Trousdale, Nandan S Anavekar, William D Edwards, Joseph J Maleszewski
BACKGROUND: Arthroplasty implants commonly contain elemental metal that may undergo wear-related release. Recently, cases of hip implant-associated myocardial injury have been reported. However, we are not aware of any previous study that has systematically measured myocardial metal levels or examined the relationship with total hip arthroplasty (THA). METHODS: Archives of our institution were queried for autopsies of individuals who had undergone THA between 1990 and 2013...
November 15, 2017: Journal of Bone and Joint Surgery. American Volume
https://www.readbyqxmd.com/read/29130357/biological-effects-of-metal-degradation-in-hip-arthroplasties
#2
Donatella Granchi, Lucia Maria Savarino, Gabriela Ciapetti, Nicola Baldini
Metals and metal alloys are the most used materials in orthopedic implants. The focus is on total hip arthroplasty (THA) that, though well tolerated, may be associated with local and remote adverse effects in the medium-long term. This review aims to summarize data on the biological consequences of the metal implant degradation that have been attributed predominantly to metal-on-metal (MoM) THA. Local responses to metals consist of a broad clinical spectrum ranging from small asymptomatic tissue lesions to severe destruction of bone and soft tissues, which are designated as metallosis, adverse reactions to metal debris (ARMD), aseptic lymphocytic vasculitis associated lesion (ALVAL), and pseudotumors...
November 13, 2017: Critical Reviews in Toxicology
https://www.readbyqxmd.com/read/29114642/two-stage-treatment-of-a-large-pelvic-cystic-pseudotumor-in-a-metal-on-metal-total-hip-arthroplasty
#3
Umberto Cottino, Federico Dettoni, Salvatore Risitano, Antonio Marmotti, Roberto Rossi
The authors report a case of a huge cystic pseudotumor, surrounding a failed metal-on-metal total hip arthroplasty (THA). The cyst surrounded the hip anteriorly, occupied part of the anterior portion of the thigh, and extended to the anterolateral aspect of the abdomen. The case was treated by a two-stage procedure. The first stage consisted of a percutaneous drainage of the fluid content of the cyst (∼1,200 mL). This procedure reduced the risk of tearing the cyst capsule spreading the liquid in the tissues surrounding the THA, and in the abdomen...
June 2017: Joints
https://www.readbyqxmd.com/read/29109884/natural-remission-of-major-periprosthetic-osteolysis-following-total-hip-arthroplasty-with-metal-on-metal-bearings
#4
Tatsuya Tamaki, Kazuhiro Oinuma
The natural course of adverse events following the use of metal-on-metal (MoM) bearings in total hip arthroplasty (THA) is not well known. In this article, we report the case of a patient with asymptomatic major acetabular osteolysis following MoM THA that diminished gradually without any surgical intervention. A 58-year-old male underwent one-stage bilateral MoM THA for bilateral osteoarthritis. Four years after THA, major acetabular osteolysis developed in his right hip without any local or systemic symptoms...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/29107497/r3-cup-does-not-have-a-high-failure-rate-in-conventional-bearings-a-minimum-of-5-year-follow-up
#5
Kar H Teoh, Robert D J Whitham, David M Golding, Jenny F Wong, Paul Y F Lee, Aled R Evans
BACKGROUND: The R3 cementless acetabular system was first marketed in Australia and Europe in 2007. Previous papers have shown high failure rates of the R3 cup with up to 24% with metal-on-metal bearing. There are currently no medium term clinical results on this cup. The aim of the study is to review our results of the R3 acetabular cup with conventional bearings with a minimum of 5-year follow-up. METHODS: Patients who were implanted with the R3 acetabular cup were identified from our center's arthroplasty database...
October 7, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29105561/failure-of-an-accis-metal-on-metal-hip-resurfacing-prosthesis-a-case-report
#6
Martin C Bone, Andrew Naylor
The introduction of coatings on joint replacements was intended to reduce wear volumes, prevent corrosion and reduce metal ion release. However, retrieval analysis to confirm their in vivo performance has been limited. The aim of study was to examine the coating on a retrieved hip prosthesis to determine whether substantial damage or wear had occurred. A single advanced ceramic-coated implant systems titanium niobium nitride-coated hip resurfacing prosthesis was retrieved for examination. Wear volumes and surface roughness were measured to quantify the damage to the articulating surfaces...
November 1, 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/29105547/what-is-appropriate-surveillance-for-metal-on-metal-hip-arthroplasty-patients
#7
Gulraj S Matharu, Andrew Judge, Antti Eskelinen, David W Murray, Hemant G Pandit
The unexpected high revision rates of large-diameter (femoral head sizes of 36 mm or greater) metal-on-metal hip arthroplasties (MoMHAs) have led to worldwide regulatory authorities recommending regular surveillance, even for asymptomatic individuals. However, these recommendations are not evidence-based and are very costly. The rapidly evolving evidence base requires an update regarding the investigation and management of MoMHA patients. This article is the first of 2 (the second article in this series will consider the threshold for performing revision, and the outcomes following ARMD revision surgery: Matharu et al...
November 6, 2017: Acta Orthopaedica
https://www.readbyqxmd.com/read/29102074/long-term-survival-of-total-hip-arthroplasty-using-implants-from-different-manufacturers
#8
James W Taylor, Chris Frampton, Alastair G Rothwell
BACKGROUND: Total hip arthroplasty (THA) can be performed using either femoral and acetabular components provided by the same manufacturer (matched components) or components from different manufacturers (unmatched components). We hypothesized that there would be no difference in outcomes following the use of unmatched compared to matched components. METHODS: Data from a nationwide joint registry, the New Zealand Joint Registry (NZJR), were analyzed to assess long-term outcomes of using unmatched implants in THA...
October 5, 2017: Journal of Arthroplasty
https://www.readbyqxmd.com/read/29098102/compression-of-the-femoral-vessels-by-a-pseudotumor-after-metal-on-metal-total-hip-arthroplasty
#9
Yasuaki Tamaki, Tomohiro Goto, Takahiko Tsutsui, Tomoya Takasago, Keizo Wada, Koichi Sairyo
Here we present a case of pseudotumor following total hip arthroplasty (THA) that resulted in a circulatory disturbance caused by compression of the femoral vasculature. A 63-year-old man presented with pain, swelling, and redness of the left leg 5 years after primary metal-on-metal THA using the AML-Plus stem, Pinnacle® acetabular cup, and 36 mm diameter Ultamet™ metal head system (DePuy Orthopaedics, Warsaw, IN). Enhanced computed tomography and magnetic resonance imaging revealed a large cystic lesion extending from the left hip anteriorly to the intrapelvic region and compressing the left femoral vessels...
2017: Case Reports in Orthopedics
https://www.readbyqxmd.com/read/29097396/choice-of-implant-combinations-in-total-hip-replacement-systematic-review-and-network-meta-analysis
#10
REVIEW
José A López-López, Rachel L Humphriss, Andrew D Beswick, Howard H Z Thom, Linda P Hunt, Amanda Burston, Christopher G Fawsitt, William Hollingworth, Julian P T Higgins, Nicky J Welton, Ashley W Blom, Elsa M R Marques
Objective To compare the survival of different implant combinations for primary total hip replacement (THR). Design Systematic review and network meta-analysis. Data sources Medline, Embase, The Cochrane Library, ClinicalTrials.gov, WHO International Clinical Trials Registry Platform, and the EU Clinical Trials Register.Review methods Published randomised controlled trials comparing different implant combinations. Implant combinations were defined by bearing surface materials (metal-on-polyethylene, ceramic-on-polyethylene, ceramic-on-ceramic, or metal-on-metal), head size (large ≥36 mm or small <36 mm), and fixation technique (cemented, uncemented, hybrid, or reverse hybrid)...
November 2, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/29048689/long-term-clinical-results-of-the-metasul-metal-on-metal-total-hip-arthroplasty-12-6-years-follow-up-of-128-primary-total-hip-replacements
#11
Hendrik A Zuiderbaan, Dennis Visser, Inger N Sierevelt, Janine Penders, Jeanette Verhart, Diederik A Vergroesen
INTRODUCTION: The purpose of the present study is to report the long-term clinical results of an uncemented total hip arthroplasty (THA) using a Metasul metal-on-metal (MoM) 28-mm bearing and to evaluate the long-term serum cobalt levels. METHODS: At an average of 12.6 years following primary THA, we retrospectively reviewed the clinical results of the first 116 consecutive patients (128 THAs) in our institution who underwent 28-mm Metasul MoM THA. Of the 78 patients who were able to visit our outpatient clinic, serum cobalt levels were evaluated...
October 14, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29037237/the-role-of-national-registries-in-improving-patient-safety-for-hip-and-knee-replacements
#12
Anne Lübbeke, Alan J Silman, Daniel Prieto-Alhambra, Amanda I Adler, Christophe Barea, Andrew J Carr
BACKGROUND: The serious adverse events associated with metal on metal hip replacements have highlighted the importance of improving methods for monitoring surgical implants. The new European Union (EU) device regulation will enforce post-marketing surveillance based on registries among other surveillance tools. Europe has a common regulatory environment, a common market for medical devices, and extensive experience with joint replacement registries. In this context, we elaborate how joint replacement registries, while building on existing structure and data, can better ensure safety and balance risks and benefits...
October 16, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/29027192/hip-resurfacing-arthroplasty-for-patients-with-inflammatory-arthritis-a-systematic-review
#13
Kyle W Morse, Edwin P Su
INTRODUCTION: Modern metal-on-metal hip resurfacing arthroplasty has led to decreased revision rates and high implant survival rates as compared to prior generations of resurfacing. Many of the series that report on resurfacing outcomes focus upon patients treated with a diagnosis of osteoarthritis. Patients with inflammatory arthritis such as rheumatoid arthritis (RA) and ankylosing spondylitis (AS) are also treated in these series, however, their outcomes following resurfacing are underreported...
October 12, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29027189/evidence-based-recommendations-for-reducing-head-neck-taper-connection-fretting-corrosion-in-hip-replacement-prostheses
#14
Christian M Wight, Brent Lanting, Emil H Schemitsch
INTRODUCTION: This systematic review seeks to summarise the published studies investigating prosthetic design, manufacture and surgical technique's effect on fretting corrosion at the head-neck taper connection, and provide clinical recommendations to reduce its occurrence. METHODS: PubMed, MEDLINE and EMBASE electronic databases were searched using the terms taper, trunnion, cone and head-neck junction. Articles investigating prosthetic design, manufacture and surgical technique's effect on fretting corrosion were retrieved, reviewed and graded according to OCEBM levels of evidence and grades of recommendation...
October 9, 2017: Hip International: the Journal of Clinical and Experimental Research on Hip Pathology and Therapy
https://www.readbyqxmd.com/read/29021201/high-court-will-hear-class-action-against-metal-on-metal-hip-manufacturer
#15
Clare Dyer
No abstract text is available yet for this article.
October 11, 2017: BMJ: British Medical Journal
https://www.readbyqxmd.com/read/28966390/erratum-management-guidelines-for-metal-on-metal-hip-resurfacing-arthroplasty-a-strategy-on-followup
#16
(no author information available yet)
[This corrects the article on p. 414 in vol. 51, PMID: 28790470.].
September 2017: Indian Journal of Orthopaedics
https://www.readbyqxmd.com/read/28963151/a-comparison-study-of-stem-taper-material-loss-at-similar-and-mixed-metal-head-neck-taper-junctions
#17
COMPARATIVE STUDY
D J Langton, R P Sidaginamale, T J Joyce, R D Meek, J G Bowsher, D Deehan, A V F Nargol, J P Holland
AIMS: We sought to determine whether cobalt-chromium alloy (CoCr) femoral stem tapers (trunnions) wear more than titanium (Ti) alloy stem tapers (trunnions) when used in a large diameter (LD) metal-on-metal (MoM) hip arthroplasty system. PATIENTS AND METHODS: We performed explant analysis using validated methodology to determine the volumetric material loss at the taper surfaces of explanted LD CoCr MoM hip arthroplasties used with either a Ti alloy (n = 28) or CoCr femoral stem (n = 21)...
October 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28963150/five-year-follow-up-of-a-prospective-randomised-trial-comparing-ceramic-on-metal-and-metal-on-metal-bearing-surfaces-in-total-hip-arthroplasty
#18
RANDOMIZED CONTROLLED TRIAL
R Schouten, A A Malone, C M Frampton, C Tiffen, G Hooper
AIMS: The primary aim of this independent prospective randomised trial was to compare serum metal ion levels for ceramic-on-metal (CoM) and metal-on-metal (MoM) bearing surfaces in total hip arthroplasty (THA). Our one-year results demonstrated elevation in metal ion levels above baseline with no significant difference between the CoM and MoM groups. This paper reviews the five-year data. PATIENTS AND METHODS: The implants used in each patient differed only in respect to the type of femoral head (ceramic or metal)...
October 2017: Bone & Joint Journal
https://www.readbyqxmd.com/read/28956270/corr-insights-%C3%A2-current-pathologic-scoring-systems-for-metal-on-metal-tha-revisions-are-not-reproducible
#19
Thomas W Bauer
No abstract text is available yet for this article.
December 2017: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/28947371/inferior-radiographic-and-functional-outcomes-with-modular-stem-in-metal-on-metal-total-hip-arthroplasty
#20
Inari Laaksonen, Vincent P Galea, James W Connelly, Sean J Matuszak, Orhun K Muratoglu, Henrik Malchau
BACKGROUND: Data on the association between stem type and metal-on-metal (MoM) total hip arthroplasty (THA) performance are limited. The aim of this study is to investigate the effect of stem type on the prevalence of osteolysis and radiolucency, blood metal ion levels, and functional outcomes in patients with Articular Surface Replacement THA (ASR XL), a type of MoM THA. METHODS: We analyzed 539 unilateral MoM THAs coupled with Summit (48%), Corail (35%), or S-ROM (17%) hip stems at a mean follow-up of 6...
September 6, 2017: Journal of Arthroplasty
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