Updated: 2/12/2018

Extensor Digitorum Longus

Review Topic

Origin Lateral tibial condyle, proximal 3/4 of anterior fibula, upper part of interosseous membrane, fascia cruris, and anterior intermuscular septum
Insertion Splits into 4 tendon slips after inferior extensor retinaculum, each of which insert on dorsum of middle and distal phalanges as part of extensor expansion complex
Action Extend toes 2 - 5 and dorsiflexes ankle
Innervation Deep peroneal nerve (L4, L5, S1) (L4, L5, S1) 
Arterial Supply Anterior tibial artery




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