[Rare indications, fractures with endoprostheses, complications. Problem cases of hip endoprosthesis]

On the basis of a few examples some critical cases in the practice of hip-joint replacement are presented. In the field of traumatology indications are rare for the implantation of a tumour prosthesis. Recovery in case of new fractures after an arthroplasty of the hip demands procedures according to the individual case. One example of a rare complication at a later time, with Palacos material perforating into the pelvis and subsequent intestinal obstructions (ileus), is also presented.