The invention shows a patella prosthesis, which consists of an artificial slide member (2) made from polyethylene with sliding surface (3), with the slide member (2) being mounted on the rear of the patella (1) by means of an attachment. The sliding surface (3) consists of the sector of a polyethylene...http://www.google.es/patents/US5181924?utm_source=gb-gplus-sharePatente US5181924 - Patella prosthesis
