Abstract: The invention relates to a resurfacing prosthesis for the natural femoral head, having a spherical outer surface and an inner receiving space that has an inner surface facing the bone. In order to be able to make the resurfacing prosthesis without using metals, combine the advantages of bone-preserving surgery with those of a biocompatible material, keep wear of the sliding pair low, and anchor the prosthesis in an excellent and long-term stable manner in the bone, the resurfacing prosthesis is characterized by an integrated porous osseointegrative inner surface and by an entirely ceramic design of the resurfacing prosthesis.

Abstract: The invention relates to a knee joint prosthesis comprising a femoral component (1) and a tibial component (2), each having a front face constituting the joint and a rear face (4) facing the bone, and a polyethylene (PE) liner (3). In order to allow the knee joint prosthesis to be implanted without metal and without cement, the femoral component (1) and the tibial component (2) consist of a full ceramic material and both components (1, 2) have integrated porous osseointegrative rear faces (4) facing the bone.

Abstract: The invention relates to an acetabulum (1) for a hip prosthesis, comprising an inner cavity (2) and a rear outer surface (3) facing the bone. In order to be able to implant the acetabulum (1) without using cement, at least some areas of the outer surface (3) are porous and osseointegrative, and the acetabulum (1) is made exclusively of a ceramic material.