1. 1  a suffix, equivalent in meaning to -ic, occurring in adjectives of Greek origin (analytic), used especially in the formation of adjectives from nouns with stems in -sis: hematotic; neurotic. Origin of -tic. Greek.
The supraspinatus (plural supraspinati, from Latin supraspinatus) is a relatively small muscle of the upper back that runs from the supraspinatous fossa superior of the scapula (shoulder blade) to the greater tubercle of the humerus. It is one of the four rotator cuff muscles and also abducts the arm at the shoulder.
The rotator cuff is a group of muscles that include the subscapularis and supraspinatus, which cause medial rotation and abduction of the arm, as well as the infraspinatus and teres minor, which together cause lateral rotation of the arm, all at the shoulder. To unlock this lesson you must be a Study.com Member.