"A study released recently found that nearly half of all dislocations occur in the upper and lower arms and most occur in the shoulder region," said Barbara Jackson, an adjunct professor of medical sciences at the University of Michigan. "For people who have been diagnosed with this disease, we need to be extra careful to diagnose it early on." During their daily life, people who suffer from a rotator cuff injury or shoulder arthritis might feel pain or tenderness in their arm. Most often, these symptoms disappear without any type of treatment. However, some patients don't feel a lot of pain after shoulder reconstruct surgery. In fact, some of them suffer no symptoms. The common symptom that a patient will experience is numbness or tingling in their shoulder. This symptom can be annoying since it ...