External rotation

External rotation (an aspect of lateral rotation) is rotation away from the center of the body, also known as extorsion.

The muscles of external rotation include:


 * of arm/humerus at shoulder
 * Deltoid muscle
 * Infraspinatus
 * Teres minor


 * of thigh/femur at hip
 * Gluteus maximus
 * Lateral rotator group
 * piriformis
 * gemellus superior
 * obturator internus
 * gemellus inferior
 * obturator externus
 * quadratus femoris
 * Sartorius
 * Obturator externus


 * of leg at knee
 * Biceps femoris


 * of eyeball (motion is also called "extorsion" or excyclotorsion)
 * Inferior rectus muscle
 * Inferior oblique muscle