LKnative - Femoral nerve and femoral triangle blocks 
The in-plane approach to block the saphenous nerve at the midthigh level in the femoral triangle
17 – Blocking the saphenous nerve separately in the adductor canal
Position: place the patient supine, rotate the thigh external
Probe: select a linear, high-frequency transducer
Place/Plane: place the transducer mid-thigh medially and perpendicular to the adductor canal
First locate the pulsatile femoral artery
You may track the artery from the inguinal ligament until it dives under the sartorius muscle

