The rotator cuff is a group of four muscles and tendons that surround the shoulder joint. These structures keep the head of the upper arm bone (humerus) firmly within the shallow socket of the shoulder (glenoid).
When the rotator cuff is injured or torn, it can cause pain, weakness, and difficulty lifting or rotating the arm. Tears may occur suddenly due to injury or gradually due to degeneration over time.
The rotator cuff is a group of four muscles and tendons that surround the shoulder joint. These structures keep the head of the upper arm bone (humerus) firmly within the shallow socket of the shoulder (glenoid).
When the rotator cuff is injured or torn, it can cause pain, weakness, and difficulty lifting or rotating the arm. Tears may occur suddenly due to injury or gradually due to degeneration over time.








