External rotation is described as which group in the shoulder?

External rotation is described as which group in the shoulder?

• A. External Rotators
• B. Biceps Brachi
• C. Internal Rotators
• D. Brachioradialis

Answer: (C)

External rotation at the shoulder is produced by the external rotator muscles. This group pulls the upper arm bone (humerus) outward, rotating it away from the body. The primary players are the infraspinatus and teres minor, with the posterior deltoid contributing in certain positions. Internal rotation, on the other hand, is driven by the internal rotators such as subscapularis, teres major, pectoralis major, latissimus dorsi, and the anterior deltoid. The biceps brachii and brachioradialis are mainly elbow/forearm movers and don’t form the external rotation group.

External rotation at the shoulder is produced by the external rotator muscles. This group pulls the upper arm bone (humerus) outward, rotating it away from the body. The primary players are the infraspinatus and teres minor, with the posterior deltoid contributing in certain positions. Internal rotation, on the other hand, is driven by the internal rotators such as subscapularis, teres major, pectoralis major, latissimus dorsi, and the anterior deltoid. The biceps brachii and brachioradialis are mainly elbow/forearm movers and don’t form the external rotation group.