The hip reaches maximal internal rotation at approximately what point in the gait cycle?

The hip reaches maximal internal rotation at approximately what point in the gait cycle?

• A. 10%
• B. 30%
• C. 50%
• D. 90%

Answer: (C)

In walking, the hip rotates in the transverse plane as the leg moves from stance into swing. The greatest amount of internal rotation of the hip occurs as the limb is transitioning through mid-stance toward early swing—roughly halfway through the gait cycle. At this point, the thigh turns inward relative to the pelvis to help the leg clear the ground and to align the limb for forward progression, aided by the opposite rotation of the pelvis and the unfolding of the knee and ankle mechanics. After this midpoint, the rotation diminishes as the leg continues into terminal swing and prepares for the next heel strike.

In walking, the hip rotates in the transverse plane as the leg moves from stance into swing. The greatest amount of internal rotation of the hip occurs as the limb is transitioning through mid-stance toward early swing—roughly halfway through the gait cycle. At this point, the thigh turns inward relative to the pelvis to help the leg clear the ground and to align the limb for forward progression, aided by the opposite rotation of the pelvis and the unfolding of the knee and ankle mechanics. After this midpoint, the rotation diminishes as the leg continues into terminal swing and prepares for the next heel strike.