Modified Iliac Oblique for Intraoperative Evaluation of Dual-Mobility Liner Malseating

The use of dual-mobility systems in both primary and revision total hip arthroplasty for patients with concern for instability has become increasingly popular. While these systems are an effective means for combating instability, they are not without unique complications, such as liner malseating. We describe an intraoperative technique to evaluate for malseating via fluoroscopy, allowing a surgeon to identify and correct malseating intraoperatively. Reducing the incidence of liner malseating in dual-mobility total hip replacement systems could reduce overall complication rates postoperatively and presumably improve their efficacy.