vastus intermedius (crureus)

Introduction

Central deep head of the quadriceps femoris.

Origin

• upper 3/4 of the anterior surface of the shaft of the femur

Insertion

• via common tendon of the quadriceps femoris to the patella & by the patellar ligament to the tibial tuberosity

Action

extends leg

Innervation

femoral nerve

More general terms

• skeletal muscle (voluntary muscle)

Component of

• quadriceps femoris