Long-term results with the cementless Alloclassic brand hip arthroplasty system.

The first 100 Alloclassic (Centerpulse, Winterthur, Switzerland) hip prostheses implanted at Allgemeines Krankenhaus Linz were examined in this study. All cases involved primary total hip arthroplasty. Of these 100, 75 could be followed up clinically and radiologically. All living patients were contacted by telephone. The follow-up period was at least 10 years. If the endpoint is defined as removal of the prosthesis due to aseptic loosening, the survival rate was 96.9% for the cup and 100% for the stem after 132 months. The average Harris Hip Score was 85.4 points. Radiolucent lines and osteolyses were found primarily in the proximal zones of the stem. Copyright 2003 Elsevier Inc. All rights reserved.