[A biomechanical solution for permanent anchoring of artificial hip joint acetabula].

This paper describes models of artificial acetabula which are better adapted to the structural conditions of the fixation bed than the prostheses used hitherto. The most important design feature is the increased area of surface contact between the artificial acetabulum and bone by means of stepped anchoring pins, which extend radially into the spongiosa from the surface of the acetabulum. The location and length of these small anchoring pins depends on the bone architecture of the acetabulum.