LKnative - Femoral nerve and femoral triangle blocks 
The saphenous nerve territory is depicted in green colour
7 – The saphenous nerve territory – a femoral nerve branch
The saphenous nerve is a branch of the posterior branch of the femoral nerve
The saphenous nerve innervates the antero-medial part of the knee and the leg including the medial malleolus and the subtalar joints
The saphenous nerve can be blocked individually in the adductor canal in the medial part of the upper thigh