The extensor digitorum longus is one of the four muscles in the anterior compartment of the lower leg. Its main action is to extend the lateral four toes (i.e., move “toes to nose”). It is also involved in dorsiflexing the the foot.
The proximal attachment (origin) of the extensor digitorum longus are the tibia, the anterior fibula and the interosseous membrane. The distal attachment (insertion) are the middle and distal phalanges of the lateral four toes.
Nerve supply is via the peroneal nerve.
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