The piriformis is a small muscle located deep in the hip joint. Its main role is to rotate the hip and move the leg away from the body (abduction). Lucky people probably haven't heard of this tiny ...

Running injuries can be a pain in the butt--sometimes literally. Such is the case with piriformis syndrome, a stubborn condition characterized by pain deep in the buttocks and, in some instances, down ...

Strain on a nerve at rest and during movement is more common than you think. Nerves need to share an extremely small space with muscles, fascia, bones, blood, lymph, ligaments, fat and tendons. To ...