2026 AAHKS Annual Meeting: First-Time Use of Dual Mobility vs. Prior Dual-Mobility Exposure in Revision THA

332 revision total hip arthroplasty (rTHA) procedures in 286 patients were retrospectively evaluated according to prior exposure to dual-mobility (DM) implants. Procedures were categorized as conversion from fixed-bearing implants to DM (n=264), revision following one prior DM exposure (n=53), or revision following two or more DM exposures (n=15). The primary outcomes were re-revision and postoperative instability. Secondary analyses evaluated re-revision-free and dislocation-free survivorship and the influence of prior DM revisions on subsequent outcomes. Follow-up duration was not reported. Overall, the results revealed that prior DM exposure was associated with significantly higher risks of re-revision and instability compared with first-time conversion from fixed-bearing implants. These findings suggested that previous DM revision history may be an important predictor of recurrent instability and implant failure following rTHA.