Adductor Longus - Podcast Version 0:00 / 0:00 1x 0.25x 0.5x 0.75x 1x 1.25x 1.5x 1.75x 2x 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 (2026) Fig 1Muscles of the medial thigh. The overlying muscles in the anterior compartment have been removed. By TeachMeSeries Ltd (2026) 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 Pro Feature - Dissection Atlas Prosection of the muscles of the medial compartment of the thigh. The adductor longus and brevis have been divided and reflected back to reveal the underlying structures. The posterior branch of the obturator nerve runs posterior to the adductor brevis. Prosection of the muscles of the medial compartment of the thigh. The adductor longus and brevis have been divided and reflected back to reveal the underlying structures. The posterior branch of the obturator nerve runs posterior to the adductor brevis. You've Discovered a Pro Feature Access our Dissection Image Library Enhance your understanding with high-resolution dissection images showcasing real-life anatomy. Learn More Frequent questions What is the adductor longus muscle? The adductor longus is a large, flat muscle located in the medial compartment of the thigh, which plays a crucial role in adducting the thigh. It partially covers the adductor brevis and magnus muscles. Where does the adductor longus originate and attach? The adductor longus originates from the pubis bone in the pelvis and fans out to attach broadly along the linea aspera of the femur. This positioning allows it to effectively contribute to thigh movement. What is the primary action of the adductor longus? The primary action of the adductor longus is the adduction of the thigh, which is essential for stabilising the leg during activities such as walking and running. This muscle helps bring the thigh closer to the body's midline. Which nerve innervates the adductor longus? The adductor longus is innervated by the obturator nerve, specifically from the L2 to L4 spinal segments. This nerve supply is crucial for the muscle's function and movement. What is the blood supply to the adductor longus? The adductor longus receives its blood supply from the obturator artery. This vascular support is vital for maintaining the muscle's health and function. Rate This Article