External rotation (or extorsion or lateral rotation) is an anatomical term of motion referring to rotation away from the center of the body. The external rotator muscles include:
Muscles of arm/humerus at shoulderShoulder Articulations Deltoid muscle Supraspinatus Infraspinatus Teres minor of thigh/femur at hipHip Articulations Gluteus maximus Lateral rotator group piriformis gemellus superior obturator internus pectineus gemellus inferior obturator externus quadratus femoris Sartorius of leg at kneeKnee Articulations Biceps femoris of eyeball (motion is also called "extorsion" or excyclotorsion)Extorsion at eMedicine Dictionary Inferior rectus muscle Inferior oblique muscle
See also List of internal rotators of the human body
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