Ultimate outcome in immediate postoperative total hip arthroplasty instability.

The objective of this study was to determine the ultimate outcome of patients who experienced immediate postoperative instability after primary total hip arthroplasty using regional anesthesia. Thirty-one patients whose radiographs demonstrated dislocation or subluxation immediately after total hip arthroplasty were evaluated as to the ultimate outcome of hip function and stability. Once a dislocation has occurred, the risk of redislocation is high.