Earlier Estimates of DePuy ASR XL Failure Rates May Have Been Too Low

Soon after DePuy Orthopaedics, Inc. recalled its DePuy ASR XL Acetabular hip systems, it was estimated that the failure rate would be around 12-13% of all 93,000 hip implants received by patients.
However, Bloomberg News is reporting that doctors in the United Kingdom believe the failure rate may be as high as 49%. That’s as disturbing as it is shocking.
According to Bloomberg, “The British Orthopaedic Association and the British Hip Society said in a statement this week that data on the ASR XL Acetabular System from four surgeons show the rate of second operations, or revisions, ranges from 21 percent after four years to 49 percent after six years.
“It’s probably the best indicator so far of what the failure rate is likely to be,” John Skinner, an orthopedic surgeon and chairman of the groups’ expert advisory group on metal bearing hips, said in a telephone interview. “As far as I can tell, it’s reliable.” Skinner said the data haven’t undergone peer review required for publication.
That would mean close to 50,000 patients would have defective hips and in need of painful and complex revision surgery.