Hip internal rotators are active through much of stance to do what?

Hip internal rotators are active through much of stance to do what?

• A. Prevent any pelvic rotation
• B. Pull the stance limb backward only
• C. Lock the knee in extension
• D. Move the contralateral side of the pelvis forward

Answer: (D)

Hip internal rotators active during most of stance rotate the thigh inward, which helps rotate the pelvis so the opposite side can move forward as you step. This inward rotation of the stance hip facilitates forward progression and keeps the body balanced over the leg. It isn’t about preventing pelvic rotation, pulling the leg backward, or locking the knee—the key outcome is the forward movement of the contralateral (opposite) side of the pelvis.

Hip internal rotators active during most of stance rotate the thigh inward, which helps rotate the pelvis so the opposite side can move forward as you step. This inward rotation of the stance hip facilitates forward progression and keeps the body balanced over the leg. It isn’t about preventing pelvic rotation, pulling the leg backward, or locking the knee—the key outcome is the forward movement of the contralateral (opposite) side of the pelvis.