Extensor Digitorum Longus Muscle – Attachments, Actions & Innervation
The extensor digitorum longus (EDL) is a muscle in the anterior compartment of the leg. It is responsible for extending the toes and contributes to dorsiflexing the ankle.
Extensor Digitorum Longus Muscle
Attachments of Extensor Digitorum Longus Muscle: Origin & Insertion
Origin: (proximal attachments)
Lateral condyle of tibia & superior 3/4 of anterior surface of fibula; interosseous margin.
Insertion: (distal attachments)
Middle & distal phalanges of digits 2-5.
Actions of Extensor Digitorum Longus on the foot:
a. Extends toes 2-5.
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b. Dorsiflexes foot at ankle.
Nerve to Muscle and its Spinal Segment:
Deep peroneal nerve (L4, L5, S1).
Muscles That Act On Foot & Ankle (From Ant. Leg Comp.)
Test yourself while observing the Extensor Digitorum Longus Muscle