Saphenous Nerve, Anterior View

Description

Running from the femoral triangle into the adductor canal, the saphenous nerve is traced anteriorly as it passes deep to sartorius in the subsartorial plane, then emerges between sartorius and gracilis to become subcutaneous along the medial knee. Distally, it accompanies the great saphenous vein over the medial tibia, continuing toward the medial malleolus where its infrapatellar and medial crural cutaneous branches distribute to the anteromedial leg. Surrounding landmarks include the femur, patella, tibia, and fibula, with the quadriceps group anterior to the femur and the tibialis anterior prominent along the anterolateral shin. Paired arterial and venous channels are shown in red and blue, and major nerves are rendered in yellow for immediate orientation. Anterior mapping of the saphenous nerve matters because it is the principal sensory branch of the femoral nerve and a common source of postoperative dysesthesia after medial knee surgery. Surgeons and anesthetists reference this course when planning adductor canal blocks and when working near the great saphenous vein during harvest for coronary artery bypass grafting, where traction or transection can produce persistent medial leg numbness. The relationship to sartorius and the adductor canal also clarifies why pain can localize to the medial knee despite intact motor function. Purely sensory. Use this artwork in lower limb anatomy teaching for medical and PA curricula, in anesthesiology and sports medicine materials covering regional blocks and medial knee pain patterns, and in vascular surgery or cardiothoracic publications illustrating vein harvesting and its neurologic complications. Anatomical accuracy verified by SciePro's Medical Advisory Board.