A modular prosthesis has an intramedullary rod element which is to be inserted in a bone, an artificial trochanter and a neck for carrying the ball. The intramedullary rod has a proximal end and a distal end telescoped together allowing free relative rotation of the ends. A split sleeve is fitted between...http://www.google.fr/patents/US6692530?utm_source=gb-gplus-shareBrevet US6692530 - Split sleeve modular joint
