[Experiences with the Mittelmeier ceramic screw acetabulum in exchange operations for loose endoprostheses]

This is a report about our experience with the replacement of loosened acetabular endosprotheses by the self locking ceramic Endoprosthesis Mittelmeier. That's an analysis of 60 patients concerning age, sex incidence, indications, primary implant type and long term findings. The clinical findings are illustrated according to the schedule of Merle d' Aubigné. The critical evaluation shows, that the self locking ceramic cup allows the additional implantation of homologous or autologous bone chips and grafts avoiding further allogenous implants.