Advertisement

U.K. Registry Data Confirm Metal-on-Metal Hip-Implant Problems — Physician’s First Watch

Medical News |
March 13, 2012

U.K. Registry Data Confirm Metal-on-Metal Hip-Implant Problems

Metal-on-metal hip replacements — especially those with larger head sizes — fail at higher rates than other types of bearing surfaces, and the evidence is "unequivocal" according to a Lancet report.

Investigators evaluated registry data on over 400,000 total hip replacements of various types. They excluded ASR implants (a type of metal-on-metal implant that has been withdrawn from the market because of high failure rates).

Metal-on-metal implants had 5-year failure rates necessitating revision that were triple those of the other bearing types — roughly 6% versus 2%. Larger metal-on-metal head sizes were most prone to failure; ceramic-on-ceramic prostheses, however, showed better performance with larger head sizes.

A commentator says the registry data add to the evidence that the problem is not caused by a specific brand of metal-on-metal implant, but rather it is a class effect.

Your Comment

(will not be published)

Filtered HTML

  • Allowed HTML tags: <a> <em> <strong> <cite> <blockquote> <code> <ul> <ol> <li> <dl> <dt> <dd>
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.

Plain text

  • No HTML tags allowed.
  • Web page addresses and e-mail addresses turn into links automatically.
  • Lines and paragraphs break automatically.
Do you have any conflict of interest to disclose?
CAPTCHA
This question is for testing whether you are a human visitor and to prevent automated spam submissions.
Image CAPTCHA
Enter the characters shown in the image.

Vertical Tabs

* Required

Reader comments are intended to encourage lively discussion of clinical topics with your peers in the medical community. We ask that you keep your remarks to a reasonable length, and we reserve the right to withhold publication of remarks that do not meet this standard.

PRIVACY: We will not use your email address, submitted for a comment, for any other purpose nor sell, rent, or share your e-mail address with any third parties. Please see our Privacy Policy.

Advertisement
Advertisement
Advertisement