The arm extends from the shoulder to the wrist, including the upper arm and forearm. Different muscles may work together in intricate ways to help the arm, wrists, fingers, and hands function. Knowing ...

Rotator cuff injury can be a tendinitis, a strain, or a tear of the rotator cuff muscles. The rotator cuff is made up of four tendons that fuse to surround the shoulder joint. There are two major ...