Which muscles constitute hip external rotation?

Which muscles constitute hip external rotation?

• A. Piriformis
• B. Gluteus Maximus and Deep Rotators
• C. Obturator Externus
• D. Gluteus Medius

Answer: (B)

Hip external rotation is performed by turning the thigh outward, away from the midline. The main muscles responsible are the gluteus maximus and the deep external rotator group, which includes piriformis, the gemelli (superior and inferior), obturator internus, obturator externus, and quadratus femoris. Gluteus maximus is a primary external rotator, especially when the hip is extended, while the deep rotators collectively provide external rotation across various hip positions. Listing just one muscle or a single component isn’t enough to capture the full action, and the gluteus medius is primarily an abductor (with some posterior fibers contributing to external rotation only in certain positions). So, the combination of the gluteus maximus and the deep external rotators best represents hip external rotation.

Hip external rotation is performed by turning the thigh outward, away from the midline. The main muscles responsible are the gluteus maximus and the deep external rotator group, which includes piriformis, the gemelli (superior and inferior), obturator internus, obturator externus, and quadratus femoris. Gluteus maximus is a primary external rotator, especially when the hip is extended, while the deep rotators collectively provide external rotation across various hip positions. Listing just one muscle or a single component isn’t enough to capture the full action, and the gluteus medius is primarily an abductor (with some posterior fibers contributing to external rotation only in certain positions). So, the combination of the gluteus maximus and the deep external rotators best represents hip external rotation.