Vastus intermedius

Antero/ lateral femur

Patellar ligament

Extends leg

Femoral nerve

Femoral artery

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The Vastus medialis and Vastus intermedius appear to be inseparably united, but 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.