British Study Finds Highest Failure Rates in Metal-On-Metal Hip Implants
Experts in England and Wales are aiming to ban controversial metal-on-metal hip implants, a British newspaper reports.
This December, the findings of a study—led by the National Joint Registry in England and Wales and examining the failure rates of metal-on-metal hip replacement devices such as the DePuy Pinnacle, DePuy ASR, the Wright Conserve and Biomet M2a Magnum—were published in The Guardian.
Here’s what researchers found: out of 402,051 hip replacement surgeries, which included 31, 171 metal-on-metal implant surgeries, the overall five-year failure rate weighed in at 6.2 percent. This number, which included surgeries involving metal-on-metal hip replacements like the DePuy ASR, DePuy Pinnacle, and the Wright Conserve, represented the highest of all types of hip replacements.
They also discovered that these types of implants had a greater risk of failure within five years for women, and those devices with larger ‘heads’ had a higher failure rate as well.
The details of this study, which was administered by researchers from the Universities of Bristol and Exeter and the Centre for Hip Surgery at the Wrightington Hospital in Lancashire, were originally published in the medical journal, The Lancet.
Revelations like these have clearly made an impact on the European market for medical devices. The Guardian said the sales of metal-on-metal hip replacements have plummeted since 2008, and will continue to do so as research continues to refute their efficiency in the long-term.
It’s estimated that there have been approximately 17,000 adverse event reports of complications stemming from metal-on-metal hips from 2000-2011. More and more patients have filed metal-on-metal hip lawsuits over devices such as the DePuy ASR, DePuy Pinnacle metal-on-metal hip implant and the Wright Conserve hip replacement. This number is expected to rise in the coming months, as patients experience the long-term injuries associated with the potentially dangerous and ineffective implants.