25dkou315 10.3205/25dkou315 urn:nbn:de:0183-25dkou3157 Meeting Abstract Lee Lee Young-Kyun YK

Seoul National University Bundang Hospital, Seongnam, Republik Korea (Südkorea)

author Park Park Jung-Wee JW

Seoul National University Bundang Hospital, Seongnam, Republik Korea (Südkorea)

author Lee Lee Dong-Hoon DH

Seoul National University Bundang Hospital, Seongnam, Republik Korea (Südkorea)

author Park Park Ki-Tae KT

Seoul National University Bundang Hospital, Seongnam, Republik Korea (Südkorea)

author German Medical Science GMS Publishing House

Düsseldorf

610 20251031 engl This is an Open Access article distributed under the terms of the Creative Commons Attribution 4.0 License. Dieser Artikel ist ein Open-Access-Artikel und steht unter den Lizenzbedingungen der Creative Commons Attribution 4.0 License (Namensnennung). M0634 315 Deutsche Gesellschaft für Orthopädie und Unfallchirurgie Deutsche Gesellschaft für Orthopädie und Orthopädische Chirurgie Deutsche Gesellschaft für Unfallchirurgie Berufsverband für Orthopädie und Unfallchirurgie Deutscher Kongress für Orthopädie und Unfallchirurgie (DKOU 2025) Abstracts | Primär- und Revisionsendoprothetik – Materialien & Implantate Berlin 20251028 20251031 AB47-4508 TextObjectives and questions: Dual mobility (DM) design increases the effective femoral head size and improve stability with increased jump distance and without impingement. The purpose of this study was to compare clinical outcomes and revision rate between conventional total hip arthroplasty (THA) and DM.Material and methods: Using the Korean National Health Insurance Service database, patients ≥19 years who underwent primary THA between 2015 and 2019 (n = 47,119) were identified. Cumulative incidences of dislocation, periprosthetic joint infection (PJI), periprosthetic fracture were evaluated. Multivariable Cox proportional hazard regression ratios (HRs) were used to compare cup revision, stem revision and any revision within 6 years follow-up.Results: In adjusted analyses, DM showed a lower risk of dislocation (aHR = 0.57, 95% CI = 0.42–0.77) and higher risk of PJI (aHR = 1.46, 95% CI = 1.04–2.05), compared to conventional THA within 1 year, as well as within 30 days, 90 days. There were no significant differences in risk of cup revision (aHR = 0.66, 95% CI = 0.39 to 1.11), stem revision (aHR = 1.38, 95% CI = 0.95 to 2.01) and any revision (aHR = 0.99, 95% CI = 0.76 to 1.30).Discussion and conclusions: We found a lower risk of dislocation and a higher risk of PJI for DM compared with conventional THA. There was no difference in the overall revision rate between both groups. Our findings suggested that we can recommend DM when used, especially in patients with high risk of dislocation. 0 0 0 0