The Anastomotica Magna Artery comes off immediately before the femoral artery passes between the tendons of the adductor magnus and vastus internus muscles: together with the internal saphenous nerve, it pierces the anterior wall of the Hunterian canal, and divides into three branches; one of these crosses transversely outwards through the fibres of the vastus internus muscle; another runs downwards and outwards in the course of the fibres of the same muscle; and a third descends with the saphenous nerve to the inside of the knee-joint, where it is distributed. These three branches sometimes come off separately from the femoral.