Upper two-thirds of anterior surface of fibula, interosseous membrane, lateral condyle of tibia.
Along dorsal surface of proximal phalanges of four lateral toes, and then to bases of middle and distal phalanges.
Extends toes, dorsiflexes foot, everts foot.
Deep peroneal nerve (L4, L5, S1).
For some authors the lower lateral part of this muscle makes a separate insertion onto the dorsal surface of the fifth metatarsal and is called Peroneus Tertius.