Prosthetic hip joint devices

摘要

The femoral component of a prosthetic total hip joint replacement device which normally also includes an acetabular socket component is modified for initial use as a partial hip joint replacement by the securement in demountable manner of a larger ball-shaped head around the ball-shaped head of the original femoral component. Thus, the modified component is used with the natural acetabular socket, and future provision of a total hip joint replacement in the same patient then only requires demounting of the larger head assembly and provision of a prosthetic acetabular socket.