Effect of Hip Position and Gender on Active Hip Internal Rotation and External Rotation on the Dominant Side

This study was designed to establish the influence of gender and hip flexion position on active range of motion of the hip in external and internal rotation.

100 (50 Males & 50 Females) healthy college-age subjects with no previous hip problems were studied. Mean age was 21.8 years with a range of 18–27 years. Hip rotation of the dominant leg of each subject was measured in the prone (hip near 0" of flexion) and seated (hip near 90" of flexion) positions using a standard goniometer.

Data were analyzed using t test. Our results indicate Mean values of active hip ROM for college aged students is 27.85 for internal rotation and 34.61 for external rotation in seated position & Mean values of active hip ROM for college aged students is 35.35 for internal rotation & 42.57 for external rotation in prone position.Females had statistically more active hip internal and external rotation than males.

These findings are clinically significant and stress the importance of documenting measurement position.