Lateral Cutaneous Nerve of the Thigh - Podcast Version 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x The lateral cutaneous nerve of thigh is a sensory nerve of the lower limb that arises from the lumbar plexus. It supplies sensation to the skin of the anterolateral thigh. Pro Feature - 3D Model You've Discovered a Pro Feature Access our 3D Model Library Explore, cut, dissect, annotate and manipulate our 3D models to visualise anatomy in a dynamic, interactive way. Learn More Course The lateral cutaneous nerve of thigh arises from the lumbar plexus in the posterior abdomen. It is formed from the posterior rami (divisions) of L2 and L3. The nerve emerges from the lateral border of the psoas major muscle and passes downwards obliquely, along the anterior surface of the iliacus. It enters the lower limb by passing through or underneath the inguinal ligament, approximately 2-3cm medial to the anterior superior iliac spine. Now within the subcutaneous layer of the anterolateral thigh, the lateral cutaneous nerve of thigh terminates as numerous small sensory branches. By TeachMeSeries Ltd (2026) Fig 1Anatomical course of the lateral cutaneous nerve of thigh. Supply The lateral cutaneous nerve of thigh supplies sensory innervation to the skin of the anterolateral thigh. By TeachMeSeries Ltd (2026) Fig 2The lateral cutaneous nerve of thigh innervates the skin of the anterolateral thigh. Frequent questions What is the lateral cutaneous nerve of the thigh? The lateral cutaneous nerve of the thigh is a sensory nerve that originates from the lumbar plexus and provides sensation to the skin of the anterolateral thigh. It plays a crucial role in transmitting sensory information from this region. Where does the lateral cutaneous nerve of the thigh arise from? This nerve arises from the lumbar plexus in the posterior abdomen, specifically from the posterior rami of the L2 and L3 spinal nerves. Its origin is located near the psoas major muscle. How does the lateral cutaneous nerve of the thigh course through the body? The nerve descends obliquely along the anterior surface of the iliacus muscle and enters the lower limb by passing through or beneath the inguinal ligament, approximately 2-3 cm medial to the anterior superior iliac spine. It then branches into smaller sensory nerves within the subcutaneous layer of the thigh. What areas of the body does the lateral cutaneous nerve of the thigh supply? It supplies sensory innervation to the skin of the anterolateral thigh, allowing for sensation in this specific area. This function is essential for maintaining sensitivity and perception in the thigh region. What is the clinical significance of the lateral cutaneous nerve of the thigh? Understanding the lateral cutaneous nerve is important in diagnosing conditions that may cause sensory loss or pain in the anterolateral thigh. Injury or entrapment of this nerve can lead to symptoms such as numbness or dysesthesia in the affected area. Rate This Article