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Definition of SUPRASPINATUS
: a muscle of the back of the shoulder that arises from the supraspinous fossa of the scapula, that inserts into the top of the greater tubercle of the humerus, that is one of the muscles making up the rotator cuff of the shoulder, and that rotates the humerus laterally and helps to abduct the arm
Illustration of SUPRASPINATUS
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