EP1.83 Comparable Outcomes of Athletes with Borderline Hip Dysplasia Undergoing Hip Arthroscopy Compared to Athletes with Normal Acetabular Coverage at Long-Term Follow-Up: A Propensity-Score Matched Analysis

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ID: 331034
2026
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Abstract
Abstract Background Hip arthroscopy has shown favorable outcomes in patients with borderline hip dysplasia (BHD). However, sport-specific function has been found to be inferior in this group compared to non-BHD patients at long-term follow-up in a general population. Despite this, there remains a paucity of literature comparing long-term outcomes of hip arthroscopy in an athletic population with BHD. Methods Self-reported athletes undergoing primary hip arthroscopy for femoroacetabular impingement syndrome by a single surgeon between 1/2012-10/2014 with ≥10-year follow-up were identified. Athletes with BHD (lateral center-edge angle [LCEA]=18.0-25.0°) were propensity matched to athletes with normal acetabular coverage (LCEA=25.1-40.0) by age, sex, and body mass index. Patient reported outcomes (PROs) were compared between groups, including Hip Outcome Score (HOS) Activities of Daily Living (HOS-ADL), HOS Sports Specific Subscale (HOS-SSS), Modified Harris Hip Score (mHHS), 12-Item International Hip Outcome Tool (iHOT-12), and Visual Analog Scale for Pain (VAS Pain). Achievement of minimal clinically important difference (MCID), patient acceptable symptom state (PASS), substantial clinical benefit (SCB), and reoperation rates were compared. Results Forty-seven patients with BHD were matched to 136 patients with normal acetabular coverage. Both cohorts had significant improvement in all PROs from baseline (P<.001). There were no significant differences in any PROs between cohorts preoperatively (P≥.505) or at follow-up time points of 2-years (P≥.214), 5-years (P≥.217), or 10-years (P≥.667). At 10 years, the BHD group had higher MCID achievement of HOS-ADL compared to the normal acetabular coverage group (90.6% vs. 71.0%; P=.030). There were no significant differences between groups for other PROs across MCID (P≥.230), PASS (P≥.639), or SCB (P≥.572) achievement at minimum 10-years. Time-dependent reoperation free survivorship was comparable between both groups (P=.847). Conclusions Athletic populations with BHD achieve durable improvement at minimum 10-year follow-up with comparable PROs, CSOs, and reoperation-free survival to those of athletic populations with normal acetabular coverage.
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Authors Jack Yang, Joseph Brinkman, Ty Monty, Jakob Ackermann, Shane Nho
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Journal Journal of hip preservation surgery
Year 2026
DOI
10.1093/jhps/hnag043.267
URL
https://doi.org/10.1093/jhps/hnag043.267
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