A Rotator Cuff tear is a common cause of pain and disability among adults.A torn Rotator Cuff will weaken your shoulder. This means that many daily activities, like combing your hair or getting dressed, may become painful and difficult to do.
Your shoulder is made up of three bones: your upper arm bone (humerus), your shoulder blade (scapula), and your collarbone (clavicle). The shoulder is a ball-and-socket joint: the ball, or head, of your upper arm bone fits into a shallow socket in your shoulder blade.
When one or more of the Rotator Cuff tendons is torn, the tendon no longer fully attaches to the head of the humerus.Most tears occur in the supraspinatus tendon, but other parts of the rotator cuff may also be involved.In many cases, torn tendons begin by fraying. As the damage progresses, the tendon can completely tear, sometimes with lifting a heavy object.

The most common symptoms of a rotator cuff tear include:

1. Pain at rest and at night, particularly if lying on the affected shoulder.

2. Pain when lifting and lowering your arm or with specific movements.

3. Weakness when lifting or rotating your arm.

4. Crepitus or crackling sensation when moving your shoulder in certain positions.