Rectus Femoris

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

Example stretches

Related injuries

Related muscles