According to a recent article in the Associated Press, during the last few years, metal on metal hip implants have become increasingly popular among and physicians believed these devices to be more durable than the traditional artificial hip replacements made from ceramic and plastic.However a few months ago, European experts at the world largest artificial joint registry advised doctors that they should stop using metal-on-metal hip replacements because these devices have a high early failure rate.

via Metal or Plastic? What Doctors And The FDA Say About Hip Replacements | The Legal Examiner Central Pennsylvania.