Q is for Quadriceps

As the name would imply, the quadriceps muscle group has four muscles: rectus femoris, vastus intermedius, vastus medialis and vastus lateralis. These muscles are what we commonly know as our thigh muscles, and are responsible for extending the knee (i.e. straightening the lower leg) – and also providing a braking force when running downhill or stopping suddenly. Rectus femoris also flexes the hip – as it attaches to the pelvis (at the anterior inferior iliac spine). Rectus femoris and vastus intermedius are situated down the central portion of your thigh and act on the knee centrally with power when extending … Continue reading