A prosthetic implant includes first, second and third components. The first component is configured to be disposed within the acetabulum. The second component is in a load bearing relationship with the first component, and is operable to rotate in a first axis of rotation. The second component is inhibited...http://www.google.com/patents/US20040193282?utm_source=gb-gplus-sharePatent US20040193282 - Reduced wear orthopaedic implant apparatus and method