In a study at Coxa Hospital for Joint Replacement in Finland, researchers assessed 176 patients who received metal-on-metal hip implants (203 hips) and found that 84 of those hips required revision surgery. In 87 percent of these revisions, adverse soft-tissue reaction to metal debris (ARMD) was diagnosed. Additionally, a larger femoral diameter and stem type had a higher risk of ARMD, metallosis, and device failure. Metal-on-metal hip designs, made by a number of medical device manufacturers such as Wright Medical, DePuy Orthopaedics and its parent company Johnson & Johnson, Stryker, Smith & Nephew and Zimmer Biomet Holdings, are made up of a cobalt-chromium alloy, which has been ... Read More
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