EP8.96 Hip Arthroscopy Surgery Improves Hip Flexion and Internal Rotation of both the Operative and Contralateral Hip

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ID: 331147
2026
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Abstract
Abstract Purpose We sought to evaluate changes in hip range of motion in the contralateral hip after hip arthroscopy. We hypothesized that patients who undergo hip arthroscopy will have improved contralateral hip range of motion (ROM) at 3 months and 1-year post-operation. Methods Retrospective chart review was conducted on patients aged 18-40 years old who were indicated for and underwent primary hip arthroscopy between 2020 and 2023, with a minimum of 1-year follow-up in clinic to evaluate bilateral hip supine ROM. We evaluated hip range of motion at the pre-operative, 3-month post-operative and 1-year post-operative time points in the operative and non-operative hips. The same surgeon made all ROM measurements at all time points. Results One hundred patients (mean age 28.90 ± 6.9 years) were included. Average internal and external rotation of both the operative and contralateral, non-operative, hip showed statistically significant increases from pre-operation to post-operation. In internal rotation, contralateral hip motion increased from pre-operative measurements of 19.8° ± 12.6° to 23.0° ± 12.1° at 3-months post-operation (p=0.02). There were no significant differences at 1-year post-operation (21.5° ± 12.6°, p=0.07). In external rotation, contralateral hip motion increased from 34.9° ± 9.4° pre-operation to 37.0° ± 7.1° at 3-months post-operation (p=0.04) and 37.1 ± 8.2° 1-year post-operation (p=0.01). There were no significant changes in flexion of the contralateral hip. In the operative hip, average flexion (108.8 ± 15.8° to 115.6 ± 8.1°), internal rotation (13.7° ± 14.2° to 24.1° ± 9.4°), and external rotation (31.6° ± 10.2° to 34.5° ± 5.6°) showed statistically significant increases from pre-operation to post-operation (p<0.0001 for all groups). Time was a significant factor in increased range of motion in all cases. Conclusions Hip arthroscopy is associated not only with increased internal rotation and external rotation in the operative hip, but also with flexion, internal rotation, and external rotation in the contralateral, non-operative, hip post-operatively.
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Authors Anna Balstad, Megan N. Baughman, Jack Drake, Collin Nguyen, Samuel J. Mosiman, Andrea M. Spiker
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Journal Journal of hip preservation surgery
Year 2026
DOI
10.1093/jhps/hnag043.475
URL
https://doi.org/10.1093/jhps/hnag043.475
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