Which muscles are the primary hip abductors?

Which muscles are the primary hip abductors?

• A. Gluteus Medius and Gluteus Minimus
• B. Tensor Fasciae Latae
• C. Gluteus Maximus
• D. Gluteus Medius

Answer: (A)

Hip abduction is performed mainly by the muscles on the outer hip that pull the thigh away from the midline and help keep the pelvis level during movement. The primary hip abductors are the gluteus medius and gluteus minimus. They both originate on the outer surface of the ilium and insert on the greater trochanter, working together to lift the leg out to the side and to stabilize the pelvis when the opposite leg is lifting. The gluteus medius has fibers that can assist with flexion and internal rotation (anterior part) and with extension and external rotation (posterior part), but its main job is abduction and pelvic stabilization. The gluteus maximus, by contrast, is mainly a hip extensor and external rotator, with only a limited role in abduction. The tensor fasciae latae can contribute to abduction when the hip is flexed and helps tense the iliotibial band, but it is not the primary abductor. Weakness in these primary abductors often leads to a pelvic drop on the opposite side during walking, known as a Trendelenburg sign.

Hip abduction is performed mainly by the muscles on the outer hip that pull the thigh away from the midline and help keep the pelvis level during movement. The primary hip abductors are the gluteus medius and gluteus minimus. They both originate on the outer surface of the ilium and insert on the greater trochanter, working together to lift the leg out to the side and to stabilize the pelvis when the opposite leg is lifting. The gluteus medius has fibers that can assist with flexion and internal rotation (anterior part) and with extension and external rotation (posterior part), but its main job is abduction and pelvic stabilization. The gluteus maximus, by contrast, is mainly a hip extensor and external rotator, with only a limited role in abduction. The tensor fasciae latae can contribute to abduction when the hip is flexed and helps tense the iliotibial band, but it is not the primary abductor. Weakness in these primary abductors often leads to a pelvic drop on the opposite side during walking, known as a Trendelenburg sign.