Certain athletic activities and lifestyles require a completely stable and very mobile hip replacement. Using a biarticulated (tripolar) hip replacement 98% of patients had good or excellent results in elite sports and 99% were not limited in sexual activity. The implants use a polyethylene on ceramic articulation which is metal free. Professional athletes and those involved in adventure sports have this most to gain from this proven technology. Peer reviewed studies with long term follow-up support the concept.