Common shoulder pain and injuries are frequently caused by athletic activities involving excessive repetitive overhead motion. They can be the result of constant weightlifting and everyday movement, such as hanging up curtains and scratching your back. Most shoulder injuries involve the muscles, ligaments and tendons, rather than the bones. The following are common problems associated with shoulder pain and injury: Tendon inflammation or tendon tears – This includes bursitis, tendinitis, rotator cuff tears and impingement. Instability – Instability occurs when the head of the upper arm bone is forced out of the shoulder socket. This can result from a sudden injury or from overuse. Arthritis – The most common type of arthritis in the shoulder is osteoarthritis. Fracture (broken [...]