["Zuggurtungs"-hip joint endoprosthesis (author's transl)].

On the basis of theoretical and experimental investigations to the problem of endoprosthetic replacement of the hip joint and the forces concerning the anchorage of the prosthesis a new model of prosthesis was developed and realized for practical use. In this paper this new "Zuggurtungs-Hüftendoprothese" and the biomechanical principles are described in detail. The biomechanically derived postulations realized in the new prosthesis which are of primary importance to avoid the mechanical complications of loosening and breaking of the prosthesis are also decisive when optimal materials are used. They allow the implantation without bone cement by the primary acievable stable anchorage.