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 ...

Your rotator cuff includes several muscles that support range of motion in your arm and shoulder while holding the socket in place. The rotator cuff is a group of four muscles that hold your upper arm ...

There's a sign of human evolution hidden right inside your body, and one little test could help you see it. Jonathan Bennion, M.P.A, the co-founder and director of the Institute of Human Anatomy in ...

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 ...