The flexor hallucis longus is a muscle within the deep compartment of the posterior leg. It is located laterally within this compartment (this is slightly counter-intuitive, as it is the opposite side to the great toe).
- Attachments: Originates from the posterior surface of the fibula and attaches to the plantar surface of the phalanx of the great toe.
- Actions: Flexion of the great toe.
- Innervation: Tibial nerve
- Blood supply: Posterior tibial artery