El obturador externo es un músculo del compartimento medial del muslo. Es uno de los músculos más pequeños de la parte medial del muslo y se encuentra en la parte superior del compartimento. Inserciones: se origina en la membrana del agujero obturador y el hueso adyacente. Pasa por debajo del cuello del fémur y se inserta en la cara posterior del trocánter mayor. Acciones: aducción y rotación lateral del muslo. Inervación: nervio obturador (L2-L4). Irrigación sanguínea: arteria obturadora y arteria femoral circunfleja medial. By TeachMeSeries Ltd (2026) Fig. 1: músculos de la cara medial del muslo. Se han eliminado los músculos superpuestos del compartimento anterior. 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 Frequent questions What is the obturator externus muscle? The obturator externus is a small muscle located in the medial compartment of the thigh. It plays a role in the adduction and lateral rotation of the thigh. Where does the obturator externus muscle originate and insert? This muscle originates from the obturator membrane and adjacent bone, then passes beneath the neck of the femur to insert on the posterior aspect of the greater trochanter. What actions are performed by the obturator externus muscle? The primary actions of the obturator externus include adduction and lateral rotation of the thigh, contributing to movements such as stabilising the hip during locomotion. Which nerve innervates the obturator externus muscle? The obturator externus is innervated by the obturator nerve, which arises from spinal segments L2 to L4. What is the blood supply to the obturator externus muscle? The blood supply to the obturator externus is provided by the obturator artery and the medial femoral circumflex artery, ensuring adequate perfusion for its function. Rate This Article