Carl Heneghan , David Langton , and M Thompson examine what has gone wrong with hip implants Metal debris that has been removed from the tissue surrounding a metal-on-metal hip implant; DePuy's ASR-XL device (centre); Tony Nargol and team Major advances in total hip replacement have ...
In Europe these concerns have led to calls to ban metal-on-metal hip replacement devices. Writing in March in the journalThe Lancet, British researchers concluded that "metal-on-metal stemmed articulations give poor implant survival compared with other options and should not be implanted." Metal-...
In this article, a concise review of the current literature on metal-on-metal hip resurfacing (MoMHR) is given. In contrast to conventional total hip arthroplasty, older age, female sex and small femoral head sizes predispose to failure. Neck fracture and metal wear-related complications account...
Metal-on-metal hip replacement (MoMHR) revision surgery for adverse reactions to metal debris (ARMD) has been associated with an increased risk of early complications and reoperation and inferior patient-reported outcome scores compared with non-ARMD revisions. As a result, early revision specificall...
Metal-on-metal total hip prostheses show no benefits over metal-on-plastic total hip prostheses. This is remarkable, since metal-on-metal hip prostheses were specifically developed to improve metal-on-plastic hip prostheses, which suffer from wear. This is shown in a PhD-thesis by orthopaedic ...
patients in the population with metal-against-metal hip replacements, and the vast majority of them are doing very well. A small subset could be affected by an adverse reaction to metal wear debris, but if these patients are identified and treated early, they should go on to do well also....
SPECIAL ISSUE PAPER107Metal-on-metal hip joint tribologyD Dowson* and Z-M JinSchool of Mechanical Engineering, The University of Leeds, Leeds, UKThe manuscript was received on 29 June 2005 and was accepted after revision for publication on 8 September 2005.DOI: 10.1243/095441105X69114Abstract:...
Total Hip Replacement (THR) is generally a highly successful treatment for late stage hip joint diseases and wear, however, wear continues to be one of the major causes of metal-on-metal THR's failure. Hip replacements typically experience a two-stage wear; a higher initial wear rate in the...
Comparison of ceramic-on-metal and metal-on-metal hip prostheses under adverse conditions. Ceramic-on-metal (COM) hip replacements, where the head is BIOLOX Delta ceramic and the liner is CoCrMo alloy, have demonstrated reduced wear under standar... S Williams,M Al-Hajjar,GH Isaac,... - ...
One hundred fifty one total hip arthroplasty (THA) with metal on metal hip system of without cement were followed at a mean of 5. 5 years (range 2. 6 years to 7 years). Original diseases were 134 hip in 123 cases with osteoarthritis and 17 hips in 13 with rheumatoid arthritis. The ...