The Ultimate Rotator Cuff Training Guide
Supraspinous fossa of scapula Upper part of the greater tuberosity of the humerus, capsule of the shoulder joint
Aids deltoid in abduction of arm, draws humerus toward glenoid fossa preventing deltoid from forcing humerus up against acromion, weakly flexes arm Suprascapular nerve (C5)
"Supraspinatus, infraspinatus, teres minor, and subscapularis together are called the rotator cuff. They prevent the larger muscles from dislocating the humerus during their actions.
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