Rectus femoris: The rectus femoris muscle originates at your pelvis and stretches down to your kneecap. It consists of two heads and is the only quad muscle that extends from the hip to the knee.

The rectus femoris (RF) is one of the four muscles found in the quadriceps and is the only one involved in hip flexion. This is because it’s the only one that is attached at the pelvis and not ...

Rectus femoris: This muscle partially covers the three vastus muscles and is the only muscle in the group to cross the hip and knee joints. In addition to extending at the knee joint, ...

And your rectus femoris muscle assists in flexing your thigh at the hip. Quadriceps pain and injuries Because you rely on your quads to do a lot of physical activities, they can be prone to injury.

The thickness of the anterior thigh and rectus femoris muscles of the dominant leg was measured using an ultrasound system. Further, the heel stiffness index was measured by quantitative ultrasound.