Which muscle assists to flex the hip?

Which muscle assists to flex the hip?

• A. Adductor Longus
• B. Gluteus Medius
• C. Gluteus Minimus
• D. Gracilis

Answer: (A)

The hip-flexion action comes from muscles that pull the thigh forward at the hip joint. Adductor longus crosses the hip in a way that allows it to contribute to flexion as it also adducts the thigh. Its fibers pull the femur toward the pelvis while moving it upward and forward, which adds a flexion moment at the hip. In contrast, the gluteus medius and gluteus minimus are mainly hip abductors, with only secondary (anterior fibers) involvement in flexion. Gracilis can assist hip flexion, but its primary role is thigh adduction and knee flexion, so it’s not as prominent for flexion as the adductor longus. That combination of crossing the hip and adding a flexion moment makes adductor longus the best choice for assisting hip flexion.

The hip-flexion action comes from muscles that pull the thigh forward at the hip joint. Adductor longus crosses the hip in a way that allows it to contribute to flexion as it also adducts the thigh. Its fibers pull the femur toward the pelvis while moving it upward and forward, which adds a flexion moment at the hip. In contrast, the gluteus medius and gluteus minimus are mainly hip abductors, with only secondary (anterior fibers) involvement in flexion. Gracilis can assist hip flexion, but its primary role is thigh adduction and knee flexion, so it’s not as prominent for flexion as the adductor longus. That combination of crossing the hip and adding a flexion moment makes adductor longus the best choice for assisting hip flexion.