Total hip arthroplasty after failed transtrochanteric rotational osteotomy for avascular necrosis of the femoral head.

We compared the clinical and radiographic outcome of 15 hips converted to total hip arthroplasty after failed transtrochanteric rotational osteotomy (THA after TRO) for avascular necrosis of the femoral head (ANFH) with that of a matched control group of 16 hips with primary THA for ANFH. The operating time in THA after TRO was significantly longer than that in primary THA. Perioperative blood loss in THA after TRO was significantly more than that in primary THA. Postoperative complications were observed in 4 hips of THA after TRO. The Harris Hip Score, the stability of implants, and survival rates did not significantly differ in both groups. We conclude that TRO did not influence the outcome of secondary THA at short- and middle-term follow-up.