What muscles make up the rotator cuff and how do they contribute to shoulder stability and movement?

The rotator cuff is made up of four muscles: the supraspinatus, infraspinatus, teres minor, and subscapularis. These muscles work together to stabilize the shoulder joint and allow for a wide range of movement. They help to keep the head of the humerus (upper arm bone) centered in the shoulder socket during arm movements, preventing dislocation and providing strength and control for activities like lifting and reaching.