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Long Term Results of Charnley Low-Friction Arthroplasty a Thirteen-Year Average Follow-Up Study

Of the first 127 consecutive patients who had had a Charnley total hip replacement at the First Orthopaedic Clinic, University of Florence, between 1970 and 1977, 74 (76 hips) were re-evaluated eleven to eighteen years post-operatively by clinical examination and roentgenograms. In this group we identified 8 failures (3 mechanical loosening and 5 septic loosening). All failed cases were revised. At 13 years average follow-up, the incidence of radiological aseptic loosening was 19.1% for the acetabular component and 17.6% for the femoral component; nevertheless in most of these cases, the clinical status was excellent or good. Acetabular component wear was found to be a significant problem.