alexa A multinational assessment of metal-on-metal bearings in hip replacement.
Orthopaedics

Orthopaedics

Journal of Arthritis

Author(s): Graves SE, Rothwell A, Tucker K, Jacobs JJ, Sedrakyan A, Graves SE, Rothwell A, Tucker K, Jacobs JJ, Sedrakyan A, Graves SE, Rothwell A, Tucker K, Jacobs JJ, Sedrakyan A, Graves SE, Rothwell A, Tucker K, Jacobs JJ, Sedrakyan A

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Abstract There is emerging evidence that many metal-on-metal (MoM) bearings, when used with large femoral heads in conventional hip replacement and some resurfacing prostheses, are associated with increased rates of revision arthroplasty. Registries are the main sources of data on MoM prostheses. At the recent International Consortium of Orthopaedic Registries (ICOR) meeting, data were presented from the Australian, England and Wales, and New Zealand registries. All registries reported an increased rate of revision for large femoral head MoM prostheses when prostheses were aggregated compared with the aggregated data of hip prostheses with other bearing surfaces. There was also evidence, however, that the outcome varied, depending on the type of prostheses used, in both large femoral head MoM conventional hip replacement as well as resurfacing hip replacement.The relevance of the recent isolated case reports on systemic metal toxicity was also discussed at the ICOR meeting. Although systemic metal toxicity appears to be a rare occurrence, there is a need to undertake appropriately designed studies to define the true prevalence of this phenomenon. There may be advantages in nesting these studies within registries. The ICOR meeting highlighted the implications of the MoM experience for the orthopaedic industry, regulators, and surgeons. This article was published in J Bone Joint Surg Am and referenced in Journal of Arthritis

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