4 – Scanning technique

Place the patient supine

Place the high-frequency linear probe in the inguinal crease

Identify the pulsating femoral artery. Slide the probe medially until you identify the adductor muscles (see next page)

Blockade of the anterior and posterior branches separately: Insert the needle from the lateral end of the probe and deposit 10 mL of local anaesthetic in the fascial plane between the adductor longus and brevis as well as in the fascial plane between the adductor brevis and magnus

Blockade of the common trunk of the obturator nerve: Tilt the tail of the probe down while you follow the pectineus muscle until you visualize the fascial plane between the pectineus and obturator externus. Insert the needle from the lateral end of the probe and deposit 10 mL of local anaesthetic in this fascial plane