Abstract: A hip prosthesis includes a femoral component with an elongated stem for seating within an elongated, longitudinally split sleeve having an exterior porous ingrowth surface. When implanted as a unit into the medullary canal, the femoral component stem wedges tightly into the sleeve to correspondingly press the sleeve into intimate and tight fit engagement with the bone. During normal postoperative use, any bone subsidence is accompanied by further wedging of the femoral component stem into the sleeve for maintenance of a secure mechanical interlock between the bone and prosthesis. However, in the event of failure for any reason, the femoral component and split sleeve are removable relatively easily to permit hip reconstruction with a new prosthesis.

Abstract: The staple comprises a top having four downwardly depending legs adjacent to its four corners. Two of the downwardly depending legs on the same side of the top are spaced inwardly from the corners relative to the remaining two legs so as to be transversely offset therefrom. The offset legs avoid the risk of splitting the bone when the staple bridges the bone "grain". In other words, the two legs will enter different cleavage planes of the bone rather than the same cleavage plane. Projections are provided on the underside of the top of the staple to aid in frictionally gripping and retaining a tendon or equivalent tie being held by the staple to a bone.

Abstract: The ligament replacement is obtained by taking a tendon from an animal of appropriate size to function as the substitute for the particular human ligament to be replaced. This tendon is cut to an appropriate length and immersed in a fixing solution such as glutaraldehyde for a sufficient length of time to bind the tissue. The tendon is wrapped in a protective covering and absorbable sutures are passed through the tendon to provide openings. After the tendon is grafted to the human portions formerly connected to the ligament to be replaced and healing has begun, scar tissue can then migrate into the openings left by the absorbable sutures to increase the strength and the securement of the tendon to the bone portions.