Figure 1.

Radiographs of the right hip of case 1, a male patient with end-stage osteoarthritis. A. A preoperative anteroposterior radiograph showing good bone quality. B. A postoperative anteroposterior radiograph showing that the BHR implant is well-positioned. C. 46 months postoperatively, this patient fell on stairs. Radiographs showed a femoral fracture. D. A fractured bone trabecula (arrowheads) in an area adjoining necrotic bone (arrow). E. Implant-host tissue interface with some necrotic tissue (Ne) close to the black implant surface (arrows). F. Trabecular bone with marrow space, which contains phagocytozed (arrowheads) and extracellular (arrow) cement particles. G. Such cement particles (o) were often seen close to the host-cement interface (*), which in this section is already separated by an implant capsule (arrowheads).