An acetabular cup for use as a prosthetic implant has an insert with a body including a central bore for receiving a positioning rod therein. A key element is formed on the bore and is adapted to align the positioning rod. The insert has a locating element formed on an outer surface of the body and also...http://www.google.fr/patents/US5171243?utm_source=gb-gplus-shareBrevet US5171243 - Acetabular cup positioning insert
