HYBRID TOTAL HIP-ARTHROPLASTY - 7 TO 10-YEAR RESULTS

One hundred fifth consecutive hybrid total hip arthroplasties in 139 p atients were performed using an uncemented hemispheric porous coated a cetabular component (HGP-I) with screws and a femoral component (Preco at) cemented with contemporary cementing technique. The average patien t age was 67 years (range, 39-85 years). No patients were lost to foll owup. Eighty-sis patients (91 hips) were alive for an average clinical followup of 103 months (range, 84-127 months); 81 hips had correspond ing radiographic analysis. The average Harris hip store preoperatively was 47 points and increased to 88 points at followup. Ninety-five per cent of patients had absent or slight pain, Aseptic loosening occurred in 2 femoral components (1.3%), 1 of which was revised for secondary osteolysis, Both hips had suboptimal cement mantles (C-2 or D grades), No femoral, osteolysis was seen in stable components. Two acetabular components migrated; I secondary to preoperative irradiation osteonecr osis and 1 secondary to a bulk autogenous graft. Acetabular osteolysis without loosening developed in 2 patients (1.3%). Using revision and radiographic loosening as the end point, the probability of both compo nents surviving 10 years was 96.9%, 98.6% for the acetabular component , and 98.4% for the femoral component. These results show that hybrid total hip arthroplasty offers excellent clinical function and exceptio nal 10-year survivorship.