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Vastus Intermedius
The vastus intermedius muscle is one of the four quadriceps muscles and is also known as the crureus muscle.
Anatomy of the Vastus Intermedius
The main artery and nerve in the Vastus intermedius are the femoral artery and the femoral nerve.
The Vastus intermedius muscle arises from the front and lateral surfaces of the body of the femur in its upper two-thirds and from the lower part of the lateral intermuscular septum.
It is inserted into the patellar ligament.
Vastus intermedius fibers end in a superficial aponeurosis, which forms the deep part of the Quadriceps femoris tendon.
Functions of the Vastus Intermedius
The main function of the vastus medialis is to extend the leg.
The Vastus medialis and Vastus intermedius are inseparably united.
However, when the Rectus femoris has been reflected a narrow interval will be observed extending upward from the medial border of the patella between the two muscles, and the separation may be continued as far as the lower part of the intertrochanteric line, where, however, the two muscles are frequently continuous.













