In the parasagittal plane below the surgical neck of the humerus, the axillary nerve is visualized between the shaft of the humerus and the deep side of the fascia of the deltoid muscle and just distal to the cross-sectional view of the teres minor muscle and just cranial to the adjacent pulsatile posterior circumflex humeral artery
Sometimes the axillary nerve is not visible sonographically. In that case ultrasound and electrical nerve stimulation can be combined in order to identify the exact location of the target nerve
