The Rectus Femoris muscle is part of the Quadriceps muscle group. It is the only muscle of the group which crosses the hip joint and is a powerful knee extensor when the hip is extended, but is weak when the hip is flexed.
Origin : Anterior Inferior Iliac Spine (AIIS).
Insertion : Top of the patella and the patella tendon to the tibial tuberosity.
Actions : Flexion of the hip.
Extension of the knee.
Innervation : Femoral nerve.
Daily uses : Kicking a football.
Example strengthening exercises : Standing hip flexion using resistance band.
Sitting hip flexion - isometric.
Example stretches : Hip flexor stretch.
Laying quadricep stretch.
Standing quadricep stretch.