A knee prosthesis which comprises a femoral component and a tibial component, for use in a procedure involving removal of the cruciate ligaments, each component extending across the width of the joint, the femoral component presenting a pair of bearing convexities separated by a groove and curving posteriorly...http://www.google.fr/patents/US4673408?utm_source=gb-gplus-shareBrevet US4673408 - Knee prosthesis