Following global trends in the orthopedic industry phasing out metal-on-metal (MoM) hip implants, Smith & Nephew recalls the metal liner used with its R3 Acetabular Hip System.
Citing dissatisfaction with clinical results and a market skeptical of metal-on-metal hip implant devices, Smith and Nephew has pulled the metal liner used in its R3 hip system off the market. This recall follows the infamous recall of the DePuy ASR MoM acetabular system, as well as growing concerns over the safety of metal-on-metal hip systems in general, including: the DePuy Pinnacle Ultamet liner, Biomet M2a-Magnum hip replacement, and Zimmer Durom hip replacement.
Metal-on-metal hip implants were marketed as the ideal bearing choice for young and active patients. However, research has shown that as a whole, metal-on-metal hip implants are associated with a higher rate of complications and revision surgeries than hip devices with alternate bearing options. The recalled Smith & Nephew metal liner for example, has a higher rate of revision than is acceptable in the orthopedic industry.
Symptoms of a failed metal-on-metal hip can include metallosis, inflammation, damage to surrounding soft tissue and bone, pseudotumor development, and device loosening. The long term consequences of metal toxicity are not yet wholly understood.