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Peroneus Tertius


- See:
- Lateral Compartment

- Anatomy:
- origin: distal 1/3 of the anterior surface of the fibula and adjacent intermuscular septum;
- insertion: dorsal surface of the base of the 5th metatarsal;
- action: dorsiflexes and everts the foot at the ankle;
- nerve supply: peroneal, L4, L5, S1 (see innervation)
- synergist: extensor digitorum longus


Morphology of the peroneus tertius muscle.