A fully torn rotator cuff refers to a complete tear or rupture of one or more of the tendons in the rotator cuff of the shoulder. The rotator cuff is a group of four tendons and associated muscles that surround the shoulder joint, providing stability and enabling various arm movements. When one or more of these tendons is fully torn, it can significantly impair shoulder function and cause pain.

• Trauma: A direct injury to the shoulder, such as a fall or collision, can cause a tear in the rotator cuff tendons.
• Degeneration: Over time, the tendons in the rotator cuff can wear down or degenerate, making them more susceptible to tears, especially in older individuals.
• Overuse: Repetitive overhead motions or activities that place strain on the shoulder joint, such as lifting heavy objects or participating in sports like baseball or tennis, can lead to rotator cuff tears over time.

• Intense shoulder pain, especially when lifting or using the arm.
• The damaged or arthritic portions of the shoulder joint (the humeral head and glenoid) are removed. The surgeon reshapes the bones to prepare them for the artificial components.
• Weakness in the affected shoulder.
• Limited range of motion, particularly with overhead activities.
• Difficulty sleeping on the affected side due to pain.