5 TO 13-YEAR FOLLOW-UP-STUDY ON CEMENTLESS FEMORAL COMPONENTS IN REVISION SURGERY

The 5- to 13-year follow-up data on 297 cementless revision arthroplas ties with extensively coated components (Anatomic Medullary Locking fe moral component, DePuy, Warsaw, IN) are reported. A basic classificati on of the femoral defects was developed. All patients were evaluated c linically and radiographically at a minimum of 60 months. Clinically, the average Postel-d'Aubigne score improved from 4.8 before to a 10.2 after surgery. Definite radiographic instability was noted in seven hi ps. Five patients were symptomatic and were revised. The mechanical fa ilure rate was 2.4%. The overall complication rate was 5.7%, with a 2. 6% dislocation rate. In the presence of bone loss in the proximal meta physeal region of the femur, fixation of the femoral component is best achieved in the diaphyseal region of the femur using an extensively c oated femoral component.