ARTIFICIAL ACETABULUM EQUIPPED WITH HOLDER AND ACETABULUM INSERT

摘要

1. Hip cup system with a metal support element and plastic cup inserts, in which the support element has : a spherically or conically or otherwise tapering stop surface (8) for the cup insert, provided on the inner surface and annularly closed, and a centering surface (11) adjacent to the receiving opening, forming a cylindrical inner surface and having a circumferential undercut (13) or a circumferential groove (16) which adjoins the stop surface (8) at least centrally, characterized in that a first cup insert (5 or 5") is provided, with a circumferential projection (15, 17) adapted to the undercut or the groove and for snapping the cup insert (5 or 5") into the support element (1), axial play existing relative to the stop surface, and in that a further cup insert (5') is provided, with a cylindrical outer surface (12) in the edge region which is provided, adapted to the inner centering surface (11), as an overdimensioned clamping seat.