EP8.79 Patients With Global Retroversion Exhibit Lower Patient-Reported Outcomes for FAIS: Comparison of 12 vs 2 Year Cohorts

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ID: 331395
2026
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Abstract
Abstract Introduction Femoroacetabular impingement syndrome (FAIS) due to pincer impingement may be associated with global acetabular retroversion. Traditionally, periacetabular osteotomy was the standard treatment for retroversion, but arthroscopic resection has gained popularity. Little is known about how contemporary hip arthroscopy techniques have affected outcomes in FAIS patients with global retroversion. This study aims to compare 2-year patient-reported outcomes (PROs) between historical and modern surgical cohorts. Methods This retrospective matched-cohort study included patients from a single surgeon's database, comparing cohorts from 12 years ago (historical) and 2 years ago (contemporary). Inclusion criteria included FAIS, preoperative radiographs, and completion of PROs at baseline and 2 years. Global retroversion was identified by the ischial spine sign, posterior wall sign, and crossover sign. Patients were matched 2:1 based on preoperative LCEA, alpha angle, age, sex, BMI, and baseline PRO scores. The modified Harris Hip Score (mHHS) and Non-Arthritic Hip Score (NAHS) were assessed at baseline and 2 years. Linear regression identified predictors of 2-year outcomes. Results The cohort included 40 historical and 20 contemporary patients. Mean 2-year mHHS was 86.4 ± 18.9 in the historical group and 88.89 ± 14.87 in the contemporary group; NAHS was 87.42 ± 17.20 vs. 88.58 ± 17.24. Linear regression showed no significant difference in 2-year mHHS (β = -10.03, P = 0.119) or NAHS (β = -9.627, P = 0.088) between groups. Baseline PROs were independently associated with outcomes (mHHS: β = 0.392, P = 0.027; NAHS: β = -0.479, P = 0.002). MCID achievement was higher in the historical cohort for both mHHS (P < 0.0001) and NAHS (P < 0.001). PASS achievement was similar (P = 1.0 for both). Change scores were significantly greater in the historical cohort (ΔmHHS: 37.15 vs 10.17, P < 0.00001; ΔNAHS: 36.42 vs 15.04, P < 0.0001). Conclusion At 2 years, outcomes were similar between historical and contemporary cohorts after adjusting for baseline scores. However, the historical cohort showed greater relative improvements and higher MCID achievement, suggesting that even with contemporary techniques, patients with higher baseline scores may achieve similar outcomes, but those starting with lower scores experience greater relative improvements.
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Authors Jessica Kurtz, Mallory Ehlers, Ava Neijna, Ariana Lott, Thomas J. Youm
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Journal Journal of hip preservation surgery
Year 2026
DOI
10.1093/jhps/hnag043.458
URL
https://doi.org/10.1093/jhps/hnag043.458
Keywords Keywords not found

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