VASTUS INTERMEDIUS

• Origin

Anterior and lateral surface of femur

• Insertion

Tibial tuberosity via patellar tendon

• Agonist(s)

- Rectus femoris

- Vastus lateralis

- Vastus medialis

• Antagonist(s)

(Hamstrings)

- Biceps femoris

- Semitendinosus

- Semimembranosus

• Function

Knee extension