PMID- 37972667 OWN - NLM STAT- MEDLINE DCOM- 20240422 LR - 20240422 IS - 1532-8406 (Electronic) IS - 0883-5403 (Linking) VI - 39 IP - 5 DP - 2024 May TI - Retroverting Periacetabular Osteotomy for Symptomatic Acetabular Anteversion. PG - 1235-1239 LID - S0883-5403(23)01136-1 [pii] LID - 10.1016/j.arth.2023.11.013 [doi] AB - BACKGROUND: Acetabular dysplasia has traditionally been defined using the lateral center edge angle and treated with periacetabular osteotomy (PAO). However, the recently described Ottawa classification further quantifies dysplasia in 3-dimensional terms, categorizing Ottawa A as dysplasia due to isolated, excessive acetabular anteversion or anterior acetabular under-coverage. We sought to determine if patients who have Ottawa A dysplasia can expect similar outcomes when undergoing a PAO compared to a traditional dysplasia cohort. METHODS: Patients who had undergone PAO with Ottawa A hip dysplasia were selected and compared to a control group of patients who had lateral acetabular undercoverage. The modified Harris Hip Score and International Hip Outcome Tool-33 were collected preoperatively and at various follow-up points for a final follow-up average of 2.3 years (range, 0.9 to 6.2). RESULTS: The 17 patients (21 hips) who had Ottawa A dysplasia were compared to a control cohort of 69 patients (88 hips). Both groups saw significant improvements in modified Harris Hip Score and International Hip Outcome Tool-33 at final follow-up, P < .001. There were no differences between groups in any of the outcome measures or rates of achieving minimal clinically important difference (MCID) or substantial clinical benefit. Rates of MCID ranged from 82.4 to 100%, and rates of achieving substantial clinical benefit ranged from 47.1 to 52.9%. CONCLUSIONS: In patients undergoing a PAO for Ottawa A hip dysplasia, a significant improvement in patient-reported outcomes can be expected with high rates of MCID achievement. This is not significantly different for patients undergoing PAO for more traditional dysplasia parameters. CI - Copyright (c) 2023 Elsevier Inc. All rights reserved. FAU - Selley, Ryan S AU - Selley RS AD - Department of Orthopedic Surgery, Northwestern Memorial Hospital, Chicago, Illinois. FAU - Peck, Jeffrey B AU - Peck JB AD - Department of Orthopaedic Surgery, Children's National Hospital, Washington, District of Columbia. FAU - Trotzky, Zachary A AU - Trotzky ZA AD - Department of Hip Preservation, Hospital for Special Surgery, New York, New York. FAU - Robustelli, Stacy B AU - Robustelli SB AD - Department of Hip Preservation, Hospital for Special Surgery, New York, New York. FAU - Sink, Ernest L AU - Sink EL AD - Department of Hip Preservation, Hospital for Special Surgery, New York, New York. LA - eng PT - Journal Article DEP - 20231114 PL - United States TA - J Arthroplasty JT - The Journal of arthroplasty JID - 8703515 SB - IM MH - Humans MH - *Hip Dislocation/surgery MH - Treatment Outcome MH - Acetabulum/surgery MH - *Hip Dislocation, Congenital/surgery MH - Osteotomy/methods MH - Retrospective Studies OTO - NOTNLM OT - Ottawa A OT - acetabular anteversion OT - hip dysplasia OT - hip pain OT - periacetabular osteotomy EDAT- 2023/11/17 15:25 MHDA- 2024/04/22 06:45 CRDT- 2023/11/16 19:24 PHST- 2023/08/02 00:00 [received] PHST- 2023/11/07 00:00 [revised] PHST- 2023/11/09 00:00 [accepted] PHST- 2024/04/22 06:45 [medline] PHST- 2023/11/17 15:25 [pubmed] PHST- 2023/11/16 19:24 [entrez] AID - S0883-5403(23)01136-1 [pii] AID - 10.1016/j.arth.2023.11.013 [doi] PST - ppublish SO - J Arthroplasty. 2024 May;39(5):1235-1239. doi: 10.1016/j.arth.2023.11.013. Epub 2023 Nov 14.