EP1.4 Native Hip Distractibility in Non-Dysplastic Males Is Associated With Sport-Related Pain But Not Baseline Functional Outcomes

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ID: 331247
2026
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Abstract
Abstract Background Hip instability remains a challenging clinical pathology in hip arthroscopy with functional limitations that negatively impact quality of life. The intraoperative axial traction exam may serve as an objective marker for microinstability; however, the relationship between preoperative patient-reported outcomes (PROs) and intraoperative hip distractibility has not been reported in male patients. Purpose/Hypothesis The purpose of this study was to determine the association of hip distractibility and preoperative PROs in non-dysplastic male patients undergoing primary hip arthroscopy. We hypothesized that male hips with greater intra-operative distraction would be associated with lower preoperative PROs. Study Design Retrospective Analysis Methods Non-dysplastic male patients aged >18 years who underwent primary hip arthroscopy were included. Patients were placed into tertiles according to their distraction distance, defined as the intraoperative difference between the joint space at 0 and 100 pounds of axial traction force. Preoperative PROs included PROMIS v2.0 Physical Function scores (PROMIS-PF), Modified Harris Hip Scores (MHHS), Single Assessment Numeric Evaluation (SANE), and pain at rest, during activities of daily living, and with sports on a visual analog scale (VAS) from 0-10. Comparisons across tertiles were performed using one-way analysis of variance (ANOVA), Multivariable linear regression was used to assess associations between distraction distance and PROs, adjusting for age, body mass index (BMI), alpha angle, and lateral center-edge angle (LCEA). Effect sizes (Cohen’s f for ANOVA; f2 for regression) and achieved power were calculated, with high power defined as >0.80 and low power as <0.50. Results Ninety-eight patients were included and distributed into tertiles of 32-33 patients based on distraction distance. There were no significant differences preoperative PROs across tertiles, including PROMIS-PF, mHHS, SANE, or VAS pain during ADLs (all p>0.05). In multiple linear regression analysis adjusted for age, BMI, alpha angle, and LCEA, distraction distance was significantly associated with VAS pain with sports. Greater axial distraction distance at 100 lbF correlated with higher sport related pain scores (β = 0.136, 95% CI [0.019 to 0.252], p=0.003). No other significant associations were identified. Conclusion In contrast to prior findings in female patients, increased native distractibility in non-dysplastic male patients undergoing primary hip arthroscopy was not associated with baseline functional scores or pain with daily activities. However, greater hip distractibility was associated with increased sport-related pain, suggesting that subtle instability in male patients may manifest primarily under higher dynamic loading conditions.
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Authors Ashley L Matter, Elisabeth Reinish, Allan K. Metz, Leah Henry, Steve Aoki
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Journal Journal of hip preservation surgery
Year 2026
DOI
10.1093/jhps/hnag043.188
URL
https://doi.org/10.1093/jhps/hnag043.188
Keywords Keywords not found

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