What is the movement the rotator cuff allows the shoulder to make?

The rotator cuff allows the shoulder to perform a wide range of movements, primarily enabling rotational and stabilization actions. It facilitates internal and external rotation of the arm, as well as abduction, which is lifting the arm away from the body. Additionally, the rotator cuff stabilizes the head of the humerus within the shallow glenoid cavity of the shoulder blade during these movements, ensuring smooth and coordinated motion.