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The relationship between hip joint morphology and hip range of motion in circus performers with hip-related pain - A
Michael J M O'Brien1, Matthew G King2, David Munro3
1La Trobe Sport Exercise Medicine Research Centre, School of Allied Health, Human Services and Sport, La Trobe University, Bundoora, Victoria, Australia; Melbourne Orthopaedic Group Sports Medicine, Windsor, 3181, Victoria, Australia.
Objective:
To assess the relationship between hip joint morphology and hip range of motion (ROM) in circus performers with hip-related pain.
Study Design:
Cross-sectional study.
Setting:
Circus arts training facility.
Participants:
Adult student circus artists with hip-related pain (19 females, 11 males, age: 22 ± 3.4).
Main Outcome Measures:
The association between radiographic measures and ROM assessment was investigated using linear regression models controlling for age and sex.
Results:
Thirty circus performers were included. A higher neck-shaft angle was associated with more external rotation ROM in prone (β0.69, 95%CI 0.13, 1.26), and more external rotation ROM in sitting (β0.68, 95%CI 0.10, 1.26). A higher alpha angle was associated with more hip flexion ROM (β0.35, 95%CI 0.03, 0.67) with a main effect of sex (F = -12.25, p = 0.032).
Conclusion:
The association between hip morphology and ROM may be unique in circus artists with hip-related pain, with neck-shaft angle and alpha angle showing an association with hip external rotation ROM and hip flexion ROM, respectively.
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