Metal on Metal hip replacements were originally promoted as a more durable solution for hip replacement surgeries. The ASR-Pinnacle , Pinnacle Zimmerman and Striker metal on metal implants have failed prematurely in thousands of patients, resulting in more than 10,000 lawsuits for the companies. 

Seventy five hundred ASR claims have already been paid for a total of $2.5 billion. In these lawsuits, the companies were accused of delivering defective products and not properly warning the public about the risks involved with Metal on Metal hip implants.