[The special problem of the replacement operation in cement-free prostheses]

The repeated use of bone cement in revision arthroplasty of the hip presents numerous problems. Consequently, we have favored a cementless implant, the so-called isoeleastic total hip endoprosthesis, and have filled the often extremely large bone defects with autologous cancellous bone. Using this method for the past 5 years, we have inserted a total of 72 cementless isoelastic hip prosthesis in 33 cases of loosening of various prosthesis models and in 39 cases of femoral stem fracture. Aside from one late infection, no renewed loosenings have been observed.