Which motions are associated with the anterior fibers of gluteus medius?

Which motions are associated with the anterior fibers of gluteus medius?

• A. Hip flexion and internal rotation
• B. Hip extension and external rotation
• C. Knee flexion and ankle dorsiflexion
• D. Hip adduction and external rotation

Answer: (A)

The anterior portion of gluteus medius is oriented to flex the hip and rotate the thigh inward. So, when the hip moves into flexion, these fibers contribute to hip flexion and internal (medial) rotation, making that option the best match. The other choices involve actions not produced by these fibers: knee and ankle movements aren’t controlled by this hip muscle, extension and external rotation are linked to the posterior fibers, and hip adduction isn’t a primary action of the anterior fibers.

The anterior portion of gluteus medius is oriented to flex the hip and rotate the thigh inward. So, when the hip moves into flexion, these fibers contribute to hip flexion and internal (medial) rotation, making that option the best match. The other choices involve actions not produced by these fibers: knee and ankle movements aren’t controlled by this hip muscle, extension and external rotation are linked to the posterior fibers, and hip adduction isn’t a primary action of the anterior fibers.