Vastus Lateralis

Video Description

Origin:
Superior portion of intertrochanteric line, anterior and inferior borders of greater trochanter, superior portion of lateral lip of linea aspera, and lateral portion of gluteal tuberosity of femur.

Insertion:
Lateral base and border of patella; also forms the lateral patellar retinaculum and lateral side of quadriceps femoris tendon.

Action:
Extends the knee.

Innervation:
Muscular branches of femoral nerve (L2, L3, L4).

Arterial Supply:
Lateral circumflex femoral artery.