what is the function of rotator cuff tendon
The Rotator Cuff Muscles FUNCTION: be a force couple to control the head of the humerus on the glenoid fossa. 5th Rotator Cuff muscle: Long head of the bicep brachii. Function of the 5th rotator cuff muscle: prevents superior migration of the humeral head. *during shoulder ELEVATION the RTC compresses and inferiorly glides the humeral head. The Rotator Cuff - S.I.T.S Muscles Often the mnemonic S.I.T.S is used to help remember the muscles that make up the rotator cuff. 1  Supraspinatus: The supraspinatus muscle originates above the spine of the scapula and inserts on the greater tuberosity of the humerus. The supraspinatus abducts, or elevates, the shoulder joint out to the side.