which thigh muscles work together
The thigh has three sets of strong muscles: the hamstring muscles in the back of the thigh, the quadriceps muscles in the front, and the adductor muscles on the inside. The quadriceps muscles and hamstring muscles work together to straighten (extend) and bend (flex) the leg. The adductor muscles pull the legs together. The hamstring and quadriceps muscle groups are particularly at risk for muscle strains because they cross both the hip and knee joints.