EP8.73 Era Predicts 2-Year PROs After Arthroscopy for Femoroacetabular Impingement Syndrome Among Patients with Acetabular Overcoverage

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ID: 331386
2026
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Abstract
Abstract Introduction Capsular repair during hip arthroscopy (HA) improves short- and long-term outcomes in FAIS and is now standard of care, although it was not routine a decade ago. Its impact in patients with acetabular overcoverage, an important risk factor for HA outcomes, remains unclear. This study evaluated whether capsular repair is conducive to improved functional outcomes among this population. Methods A retrospective matched-cohort study was conducted using a prospectively collected database of patients who underwent HA for FAIS with minimum 2 year follow-up. Patients were grouped by time since surgery: 2 years (2Y, 2022-2023) and 12 years (12Y, 2012-2013). Acetabular overcoverage was defined as preoperative lateral center-edge angle (LCEA) ≥40°. Functional outcomes included the modified Harris Hip Score (mHHS) and Non Arthritic Hip Score (NAHS), and achievement of MCID, PASS, and SCB. Reoperation rates were compared. Linear regression and Firth logistic regression were performed, with subgroup analysis for overcoverage. Results Forty-nine patients in the 2Y cohort were matched to 87 patients in the 12Y cohort based on age, sex, BMI, and Tönnis grade. Age (38.4 ± 13.4 years), BMI (25.1 ± 4.3 kg/m2), sex distribution (58.1% female), and presence of overcoverage (14.7%) were similar. The 2Y cohort had higher baseline function (mHHS: +24.5, NAHS: +22; both P < 0.001) but less improvement (mHHS: -26.6, NAHS: -24.6; both P < 0.001) and MCID achievement (mHHS: -45.3%, NAHS: -27.8%; both P < 0.001) at two years. After adjustment, the 2Y cohort had less improvement (mHHS: -16.1, P < 0.001; NAHS: -16.1, P < 0.001) and lower odds of achieving MCID (mHHS: OR 0.23, P = 0.027; NAHS: OR 0.25, P = 0.016) and PASS (mHHS: OR 0.20, P = 0.005; NAHS: OR 0.18, P = 0.001). In overcoverage subgroup analyses, similar trends were observed, though MCID and PASS achievement were comparable. Reoperation rates did not differ (11.0%, P = 0.278). Conclusion Patients treated 12 years ago demonstrated lower baseline function but greater functional improvement at two years, including among those with acetabular overcoverage.
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Authors Emma Trasatti, Jessica Kurtz, Andrew Bi, Thomas J. Youm
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Journal Journal of hip preservation surgery
Year 2026
DOI
10.1093/jhps/hnag043.452
URL
https://doi.org/10.1093/jhps/hnag043.452
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