In human anatomy, the infraspinatus muscle is a thick triangular muscle, which occupies the chief part of the infraspinatous fossa. As one of the four muscles of the rotator cuff, the main function of the infraspinatus is to externally rotate the humerus and stabilize the shoulder joint.
Furthermore, what is the function of the supraspinatus muscle?
Function. The supraspinatus muscle performs abduction of the arm, and pulls the head of the humerus medially towards the glenoid cavity. Beyond 15 degrees the deltoid muscle becomes increasingly more effective at abducting the arm and becomes the main propagator of this action.
One may also ask, what is the antagonist of the infraspinatus?
The infraspinatus: agonistic: anterior deltoid, latissimus dorsi, lower trapezius, pectoralis major, pectoralis minor, serratus anterior, teres minor. antagonistic: middle deltoid, middle trapezius, posterior deltoid.
How do you heal the infraspinatus?
Infraspinatus injuries are often caused by repetitive motion. Resting your shoulder will give it a chance to heal. A doctor might recommend resting your arm in a sling or temporarily avoiding activities that cause more pain.
What does a torn Infraspinatus feel like?
Infraspinatus tendon tears frequently occur in overhead athletes, as a result of overuse injury, or in chronic shoulder instability. The main complaints are pain while sleeping, weakness in the affected arm, and inability to move the arm in certain motions.