Hip external rotators help control what during early stance?

Hip external rotators help control what during early stance?

• A. Ankle dorsiflexion
• B. Toe extension
• C. Hip alignment in the horizontal plane
• D. Pelvic drop only

Answer: (C)

During early stance, the leg must stay aligned in the horizontal (transverse) plane as weight is borne. The hip external rotators counteract the inward turning forces that tend to rotate the femur, helping to keep the femur, pelvis, and trunk lined up. This stabilization maintains hip alignment in the horizontal plane, which is why that option best fits what these muscles control. Ankle dorsiflexion and toe extension are controlled mainly by muscles around the ankle and foot, not by the hip external rotators. Pelvic drop involves frontal-plane control and other muscle groups, so it’s not the primary role of the hip external rotators during early stance.

During early stance, the leg must stay aligned in the horizontal (transverse) plane as weight is borne. The hip external rotators counteract the inward turning forces that tend to rotate the femur, helping to keep the femur, pelvis, and trunk lined up. This stabilization maintains hip alignment in the horizontal plane, which is why that option best fits what these muscles control.

Ankle dorsiflexion and toe extension are controlled mainly by muscles around the ankle and foot, not by the hip external rotators. Pelvic drop involves frontal-plane control and other muscle groups, so it’s not the primary role of the hip external rotators during early stance.