A femoral insert combines bone ingrowth surfaces in the proximal portion of the shaft which is wide in the medial-lateral direction and curved in the medial aspect with a distal portion which has a round cross-section and is curved in the direction of the anterior bow of the femur. Accordingly, firm...http://www.google.de/patents/US4546501?utm_source=gb-gplus-sharePatent US4546501 - Hip prosthesis
