External Rotators of Shoulder
- Infraspinatus: primary external rotator of humerus;
- Posteior Deltoid
- Teres Minor
- the posterior rotator cuff is important for maintenance of necessary force couples in axial (transverse) and coronal planes.
- preoperative muscle testing of the external rotators is a valid means of assessing posterior cuff;
- maintenance of external rotation strength tend to have intact infraspinatus & teres minor, even though top of humeral head may be uncovered
Original Text by Clifford R. Wheeless, III, MD.
Last updated by Data Trace Staff on Thursday, January 3, 2013 3:38 pm