Charnley low-friction arthroplasty for Paget’s disease of the hip

This study investigated the perceived risks and complications associated with total hip arthroplasty for Paget’s disease. A total of 98 Charnley low-fricton arthroplasties were performed on 76 patients, 27 men (37 hips) and 49 women (61 hips), whose average age was 67.4 years (range, 51–79 years). Intraoperative blood loss averaged 388 mL (range, 110–1,730 mL), and minor heterotopic ossification occurred in 24 hips (25%), with significant changes in 4 hips (4%). After average follow-up of 10.4 years (range, 5.5–20 years), 10 acetabular (10%) and 8 femoral (8%) implants had loosened aseptically, but there was no evidence of progressive protrusio acetabuli or femoral deformity after operation. Survivorship to revision was 98% at 10 years (95% confindence interval ZCI], 95%–100%) and 91% at 15 years (95% CL 80%–100%) for the femur. The only increased risk identified was and 89% (95% CI, 80%–99%) for the femur. The only increased risk identified was nonunion of the trochanteric osteotomy (13%).