26dkou454 10.3205/26dkou454 urn:nbn:de:0183-26dkou4549 Meeting Abstract Fischer Fischer Maximilian M

Center for Orthopaedics, Trauma Surgery and Rehabilitation Medicine, University Medicine Greifswald, Greifswald, Deutschland

author Nitsch Nitsch Andreas A

Center for Orthopaedics, Trauma Surgery and Rehabilitation Medicine, University Medicine Greifswald, Greifswald, Deutschland

author Kasabji Kasabji Feras F

Center for Orthopaedics, Trauma Surgery and Rehabilitation Medicine, University Medicine Greifswald, Greifswald, Deutschland

author Goronzy Goronzy Jens J

Center for Orthopaedics, Trauma Surgery and Rehabilitation Medicine, University Medicine Greifswald, Greifswald, Deutschland

author Wassilew Wassilew Georgi G

Center for Orthopaedics, Trauma Surgery and Rehabilitation Medicine, University Medicine Greifswald, Greifswald, Deutschland

author German Medical Science GMS Publishing House

Düsseldorf

610 20261020 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). M0659 454 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 2026) Poster | Hüftchirurgie und Endoprothetik Berlin 20261020 20261023 DKOU26_Abs_2402 TextObjectives and questions: There is a paucity in literature regarding functional outcomes of revision periacetabular osteotomy (R-PAO) after failure of previous redirectional pelvic osteotomy at mature skeleton. This study aimed to compare the surgical and patient-reported outcomes (PROMs) between R-PAO and primary PAO.Material and methods: Patients undergoing R-PAO (n = 13) and primary PAO (n = 39) were matched in a 1:3 ratio for age, sex and surgical date with a minimum follow-up of one years. PROM assessment included scores for pain, joint functionality (mHHS – modified Harris-Hip; iHot12 - international Hip outcome tool-12) and activity level (UCLA – University of California Los Angeles activity scale). Postoperative outcomes were compared between the groups using independent samples t-tests and Mann–Whitney U test. Multivariable linear regression were used to identify predictors of postoperative outcome improvement.Results: A total of 52 patients were included with a mean follow-up of 3.1 years. Patients undergoing R-PAO had significant worse preoperative joint function (mHHS 34.91 - 57.28, p< 0.001; iHot-12 33.17 - 46.22, p=0.005) and activity level (UCLA 4.38 - 6.34, p=0.004) compared to primary PAO. While achieving similar functional improvement (Dpre – post, p>0.05) comparing both groups, mHHS (70.21 – 86.81, p= 0.002) and pain score (3.46 – 1.92, p=0.010) remained significant worse after R-PAO. Multivariable linear regression analysis revealed, that preserved preoperative joint function (iHot-12 β=0.795, p<0.001; mHHS β=0.696, p<0.001) and activity level (UCLA β=0.360, p<0.001), a lower BMI (iHot-12 β= -2.011, p=0.002; UCLA β= -0.120, p=0.041) and a sufficient postoperative anterior wall coverage (iHot-12 β=0.849, p<0.001) are predictors of improved postoperative outcomes in both R-PAO and primary PAO.Discussion and conclusions: Failure of hip preserving pelvic osteotomies in skeletal mature patients result in a substantial symptom burden and functional impairment. R-PAO represents a considerable treatment strategy that preserves the native hip joint and can lead to improved postoperative outcomes. However, postoperative outcomes after R-PAO remains inferior to those of primary PAO, due to the worse preoperative joint function. 0 0 0 0