Hip external rotators are especially important in early stance for controlling what?

Hip external rotators are especially important in early stance for controlling what?

• A. Hip flexion during swing
• B. Pelvic elevation during toe off
• C. Internal rotation of the lower limb
• D. Ankle dorsiflexion during mid-swing

Answer: (C)

In early stance, the leg is accepting weight and the line of progression tends to drive the limb into internal rotation. The hip external rotators oppose this tendency, working eccentrically to slow and limit internal rotation of the femur. By restraining internal rotation of the lower limb, they help keep the thigh, knee, and foot aligned, stabilizing the limb for efficient forward progression and preventing knee valgus or misalignment as weight is borne. That’s why this choice is best: it directly describes the rotational control provided by the hip external rotators during the initial contact to loading response phase. Hip flexors influence swing, pelvic elevation at toe-off involves other stabilizers, and ankle dorsiflexion is controlled by ankle and lower leg muscles, not the hip external rotators.

In early stance, the leg is accepting weight and the line of progression tends to drive the limb into internal rotation. The hip external rotators oppose this tendency, working eccentrically to slow and limit internal rotation of the femur. By restraining internal rotation of the lower limb, they help keep the thigh, knee, and foot aligned, stabilizing the limb for efficient forward progression and preventing knee valgus or misalignment as weight is borne.

That’s why this choice is best: it directly describes the rotational control provided by the hip external rotators during the initial contact to loading response phase. Hip flexors influence swing, pelvic elevation at toe-off involves other stabilizers, and ankle dorsiflexion is controlled by ankle and lower leg muscles, not the hip external rotators.