Your arms contain many muscles that work together to allow you to perform all sorts of motions and tasks. Each of your arms is composed of your upper arm and forearm. Your upper arm extends from your ...

The shoulder muscles are responsible for maintaining the widest range of motion of any joint in your body. This flexibility is also what makes the shoulder prone to instability and injury. Muscles, ...

A biceps tendon rupture is when you tear one of the strong bands of tissue that connect your upper arm muscle to your shoulder or elbow. This injury can cause sudden pain and make it harder to bend or ...