Background
Athletic activity is a proposed factor in the development and progression of intraarticular hip pathology. Early diagnosis and preventive treatments in “at risk” athletes is needed.
Objectives
Primary: To report hip range of motion (ROM) and prevalence of positive impingement testing in asymptomatic college freshman athletes; Secondary: To determine if an association exists between hip ROM and a positive flexion-adduction-internal rotation (FADIR) test.
Design
Cross-sectional study
Setting
Collegiate athletic campus
Participants
Four hundred thirty (299 males, 131 females) freshman athletes reporting no current or previous hip pain.
Methods
During the athletes’ preseason medical screening, trained examiners performed a hip-specific exam to obtain data for hip ROM and impingement testing.
Main Outcome Measurements
Bilateral passive ROM measures included hip flexion, and hip internal and external rotation with the hip flexed 0° and 90°
Results
Mean age of males was 18.5 ± 0.8 and females 18.3 ± 0.6 years old (p=.003). Males demonstrated less hip ROM than females in flexion (115.8 ± 11.2° vs. 122.0 ± 10.5°, p<.001), internal rotation in 90° flexion (26.9 ± 9.8° vs. 34.7 ± 10.7°, p<.001) and 0° flexion (29 .0 ± 9.8° vs. 38.9 ± 10.1°, p<.001), and external rotation in 90° flexion (44.7 ± 10.9° vs. 49.7 ± 10.4°, p<.001), but not for external rotation in 0° flexion (39.8 ± 11.1° vs. 37.6 ±11. 5°, p=.06). Pain with FADIR test on the right and left hip were reported in 11.9% and 14.5% of athletes, respectively. Gender and a positive FADIR were not related (males 12.2%, females 15.3%, p=.36).
Conclusions
In asymptomatic college freshman athletes, males generally demonstrated less hip ROM than females. Additionally, a positive FADIR was more prevalent than previously reported in healthy young adults. Pre-season screenings utilizing this baseline data in conjunction with other examination findings may allow identification of athletes at future risk for hip pain and/or injury.