It is an intermuscular cleft situated on the medial aspect of the middle third of the anterior compartment of the thigh, and has the following boundaries: It is covered by a strong aponeurosis which extends from the vastus medialis, across the femoral vessels to the adductor longus and magnus.
[1][2][3] The femoral artery with its vein and the saphenous nerve enter this canal through the superior foramen.
Then, the saphenous nerve and artery and vein of genus descendens exit through the anterior foramen, piercing the vastoadductor intermuscular septum.
[5] The adductor canal may be accessed for a saphenous nerve block, often used to treat pain caused by this compression.
[6][7] This article incorporates text in the public domain from page 627 of the 20th edition of Gray's Anatomy (1918)