There has been some success in resolving the lawsuits involving thousands of defective metal on metal hips. Some of the lawsuits have been settled and thousands more are still pending against the metal hip manufacturers including Zimmer (now the new proud owner of Biomet), DePuy, Stryker, Wright Medical and Smith and Nephew that sold the metal-on-metal hip implants.
The defective hip replacement lawsuits share similar allegations that there is premature catastrophic hip implant failure caused by metal cobalt and chromium release. The artificial hips are made of cobalt chromium alloy and the grinding action of the hip joint in daily activity causing the metal components to rub together, leading to the release of these toxic heavy metal particles.