<prompt> The main action of muscle Gamellius is?Medial rotation of thighLateral rotation of thighGluteus maximusGluteus medius and minimus  <response>: Gemellus muscle laterally rotates the femur at the hip joint. Superior gemellus muscle: Attaches proximally at the ischial spine; distally, the muscle attaches on the greater trochanter of the femur. The nerve to the obturator internus and superior gemellus muscles L5, S1, S2 innervates this muscle.Inferior gemellus muscle: Attaches proximally on the ischial spine; distally, the muscle attaches at the greater trochanter of the femur. The nerve to the inferior gemellus and quadratus femoris muscles L4, L5, S1 innervates this muscle. 