The extensor digitorum longus is a muscle in the anterior compartment of the leg. It is located lateral to the tibialis anterior, and its four tendons can be palpated on the dorsal surface of the foot. Attachments: Originates from the lateral condyle of the tibia and the medial surface of the fibula. The fibres converge into a tendon, which travels onto the dorsal surface of the foot. The tendon splits into four and each tendon inserts onto a toe, as shown in the image below. Actions: Extension of the lateral four toes and dorsiflexion of the foot Innervation: Deep fibular nerve Blood supply: Anterior tibial artery By TeachMeSeries Ltd (2025) Fig 1The muscles of the anterior leg. 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