The adductor longus is a muscle of the medial compartment of the thigh. It is a large, flat muscle which partially covers the adductor brevis and magnus. Attachments: Originates from the pubis bone of the pelvis and expands into a fan shape. It has a broad distal attachment along the linea aspera of the femur. Actions: Adduction of the thigh. Innervation: Obturator nerve (L2-L4). Blood Supply: Obturator artery. By TeachMeSeries Ltd (2025) Fig 1Muscles of the medial thigh. The overlying muscles in the anterior compartment have been removed. By TeachMeSeries Ltd (2025) Fig 2Cross section of the inferior thigh, showing some of the medial thigh muscles. The adductor brevis and obturator externus attach superiorly in the thigh, and so are not visible in this cross-section. 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 Print Article Rate This Article