The hamstring muscles are responsible for your hip and knee movements in walking, squatting, bending your knees, and tilting your pelvis. Hamstring muscle injuries are the most common sports injury.

Your hamstring is a group of three muscles along the back of your thigh. These muscles help you bend your knee and straighten and rotate your leg. If the muscle fibers or tendons that connect your ...

The hamstring is a group of three muscles that run up the back of your thigh. Sports that involve a lot of sprinting or stop-and-start movement, like soccer and tennis, may cause tightness in your ...

Symptoms of tight hamstrings can include stiffness and limited mobility. People may also notice cramping, pain, swelling, and bruising. They are usually the result of exercise or other intense forms ...