El nervio cutáneo lateral del muslo es un nervio sensorial de la extremidad inferior que se origina en el plexo lumbar. Proporciona sensibilidad a la piel de la parte anterolateral del muslo. 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 Trayecto El nervio cutáneo lateral del muslo se origina en el plexo lumbar, en la parte posterior del abdomen. Se forma a partir de los ramos posteriores (divisiones) de las vértebras L2 y L3. El nervio emerge del borde lateral del músculo psoas mayor y discurre oblicuamente hacia abajo, a lo largo de la superficie anterior del músculo ilíaco. Penetra en la extremidad inferior pasando por encima o por debajo del ligamento inguinal, aproximadamente a 2-3 cm hacia la parte medial de la espina ilíaca anterior superior. En la capa subcutánea de la parte anterolateral del muslo, el nervio cutáneo lateral del muslo termina en numerosas ramas sensoriales pequeñas. By TeachMeSeries Ltd (2026) Fig. 1: trayecto anatómico del nervio cutáneo lateral del muslo. Irrigación El nervio cutáneo lateral del muslo aporta inervación sensorial a la piel de la parte anterolateral del muslo. By TeachMeSeries Ltd (2026) Fig. 2: el nervio cutáneo lateral del muslo inerva la piel de la cara anterolateral del muslo. Frequent questions What is the function of the lateral cutaneous nerve of the thigh? The lateral cutaneous nerve of the thigh is a sensory nerve that provides sensation to the skin of the anterolateral aspect of the thigh. It plays a crucial role in transmitting sensory information from this region to the central nervous system. Where does the lateral cutaneous nerve of the thigh originate? This nerve originates from the lumbar plexus, specifically from the posterior rami of the L2 and L3 vertebrae. It emerges from the lateral border of the psoas major muscle in the posterior abdomen. How does the lateral cutaneous nerve of the thigh travel to the thigh? The nerve travels obliquely downward along the anterior surface of the iliacus muscle and passes either above or below the inguinal ligament. It enters the thigh approximately 2-3 cm medial to the anterior superior iliac spine. What areas does the lateral cutaneous nerve of the thigh innervate? It innervates the skin of the anterolateral thigh, providing sensory input from this specific region. The nerve terminates in multiple small sensory branches within the subcutaneous layer of the thigh. What clinical significance does the lateral cutaneous nerve of the thigh have? Injury or entrapment of this nerve can lead to sensory disturbances, such as numbness or pain in the anterolateral thigh, a condition known as meralgia paresthetica. Understanding its anatomy is important for diagnosing related conditions. Rate This Article