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Duke Orthopaedics
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Wheeless' Textbook of Orthopaedics

Internal Rotators of the Shoulder


- Discussion:
    - major internal rotators are teres major, latissimus, pect major;
    - latissimus dorsi & teres major insert along medial lip of bicipital groove & pectoralis major along lateral lip and also serve as internal rotators;
    - these muscles comprise larger mass than those that externally rotate the humerus which explains greater power of internal rotation;
    - internal rotators are supplied by nerves which arise directly from the brachial plexus



Original Text by Clifford R. Wheeless, III, MD.

Last updated by Data Trace Staff on Friday, January 4, 2013 10:29 am