Researchers pressed FDA to start requiring PMAs for metal-on-metal hips in a Jan. 10 piece in the New England Journal of Medicine.
Metal-on-metal hips have been the subject of substantial international scrutiny in recent years since global registries have shown that patients receiving the devices require revision surgery much more frequently than previously expected. (See Also see "Metal-On-Metal Hips Get Failing Grade In New Registry Analysis" - Medtech Insight, 19 March, 2012.