Shoulder arthritis refers to damage to the cartilage in the shoulder joint. It usually results from wear and tear on cartilage due to aging or injury, such as a fracture.
Pain between the shoulders is common: As many as one in 10 men and one in five women experience upper back pain, according to a 2015 journal article in Occupational Medicine. Often, upper back pain between the shoulders is caused by a muscle strain due to overuse, injury or poor posture, and although the resulting discomfort can range from mildly uncomfortable to severe and debilitating, the root cause can often be corrected with a combination of rest, stretching and exercise.
Biceps tendinitis is most often the result of everyday wear and tear on the muscle. In terms of sports, weightlifting is one of the high risk activities for biceps tendinitis, but this condition is a common sports injury that can happen to pros and amateurs alike.
There has been a recent increase in ulnar collateral ligament injuries. These injuries typically occur in overhead athletes and baseball players, but can occur in athletes at all competition levels.