Fractures
Fractures of the shoulder commonly involve the clavicle (collar bone), proximal humerus (top of the upper arm bone), and scapula (shoulder blade). Fractures are broken bones usually caused by a direct blow from a fall or a collision. Clavicle fracture symptoms include swelling and prominent bump in the collarbone area and limited range of motion. Proximal humerus fracture symptoms include severe swelling and pain and very limited movement. Scapular fracture symptoms include pain, swelling, and severe bruising around the shoulder blade.
Arthritis 
