Lateral Femoral Cutaneous Nerve
The lateral femoral cutaneous nerve (LFCN) arises from L2–L3 posterior divisions. It exits the psoas muscle along its lateral border and then runs obliquely caudally and laterally towards the anterior superior iliac spine (ASIS ). It passes under the lateral part of the inguinal ligament to enter the thigh in its own sheath (a complete fascial tunnel surrounds the nerve). It supplies the skin of the anterolateral thigh.
(MP4 422632 kb)