Rotator cuff tears
The rotator cuff is made up of tendons and muscles that surround your shoulder joint and allow you to reach overhead. Athletes who use overhead motions, such as throwing a baseball, are at increased risk of tearing the rotator cuff.
Dislocations and instability
As your body’s most mobile joint, the shoulder is particularly susceptible to dislocation. This happens when the head of your upper arm bone (humerus) pops out of the cup-shaped socket in your shoulder blade.
Shoulder labral tears
The labrum is a band of tissue that encircles the socket in your shoulder joint and helps keep the humeral head in place. You can damage the labrum in many ways, including a superior labrum anterior to posterior (SLAP) tear.
Osteoarthritis of the shoulder
Also known as wear-and-tear arthritis, this condition develops gradually and involves degenerative damage to the cartilage that cushions your shoulder joint.