BONE-GRAFT AUGMENTATION FOR ACETABULAR DEFICIENCIES IN TOTAL HIP-ARTHROPLASTY - RESULTS OF LONG-TERM FOLLOW-UP EVALUATION

The results of 102 consecutive primary and revision total hip arthropl asties performed with hone-grafting for acetabular bone deficiencies w ere reviewed at an average of 10.2 years (range, 4-18.6) after surgery . Ninety-one percent had structural bone defects and 57% had underlyin g developmental dysplasia of the hip. Overall acetabular revision rate s far aseptic loosening were 8% at 5 years and 26% at 10 years. In add ition, in the patients with developmental dysplasia who had primary hi p arthroplasties, acetabular revision rates for aseptic loosening were 3 and 18% at 5 and 10 years, respectively. Ninety-six percent of all uninfected grafts incorporated. Bulk grafts fared better than particul ate grafts. No difference in failure rate was noted between primary an d revision hip arthroplasty: type of deficiency, or amount of graft co verage. Although early results are encouraging, acetabular failure inc reased significantly with longer follow-up evaluation; however, graft incorporation was successful and facilitated subsequent revision surge ry.