A prosthetic acetabular cup assembly, for receiving a ball attached to a femur, including components interlocked via a locking mechanism that includes a retaining ring fabricated at least in part using a polyaryletherketone material, such as PEEK. The locking mechanism is designed...http://www.google.sh/patents/US5782930?utm_source=gb-gplus-sharePatent US5782930 - Polyetheretherketone (PEEK) retaining ring for an acetabular cup assembly
