Shoulder osteoarthritis, also known as degenerative joint disease of the shoulder, is a gradual, progressive, mechanical, and biochemical breakdown of the articular cartilage and other joint tissues, including bone and joint capsule. As the articular surface wears, friction within the joint increases, causing progressive loss of the normal load-bearing surfaces with pain and disability. There are many risk factors for shoulder osteoarthritis, including age, genetics, sex, weight, joint infection, history of shoulder dislocation, and previous injury.

The treatments can be analgesic, anti-inflammatory; physiotherapy can certainly help.