It is believed that at least 12%, or approximately 1 in 8 patients, fitted with a DePuy ASR hip implant will require hip revision surgery. The DePuy ASR hip replacement device is made with as shallower cup than some other hip implants, which may contribute to its high failure rate. The DePuy ASR hip implant recall was issued after hundreds of DePuy device recipients in the U.S. and elsewhere reported symptoms of a failing implant, including:
- Constant hip pain
- Thigh and/or groin pain
- Pain while walking
- Weight-bearing pain
- Pain rising from a seated position
- Blood test confirming elevated levels of chromium and cobalt ions
Surgeons in Australia were reporting high failure rates in DePuy ASR hip implant patients as early as 2008. In fact, in 2009, Australia became the first country to withdraw the devices from the market. Later that year, DePuy Orthopaedics announced a plan to phase out sales of its ASR hip implants worldwide by the end of 2010, blaming lagging sales of the devices. However, DePuy blamed ASR hip replacement complications on the surgeons who had implanted the devices.
DePuy finally acknowledge problems with ASR hip implant in March 2010, when it sent a letter to doctors informing them that recently analyzed data from Australia indicated a higher-than-expected failure for certain types of patients, including women, patients with weak bones, and those of short stature. By the time DePuy finally announced the ASR hip implant recall on August 24, 2010, some 93,000 devices had been sold worldwide.