Flexor digitorum longus
Lower legs
Deep muscle — it lies under other muscles. X-ray makes the muscles over it see-through.
- Origin
- Back of the tibia below the soleal line
- Insertion
- Bases of the distal phalanges of toes 2 to 5
- Action
- Flexes the four small toes; assists plantarflexion and inversion
- Nerve supply
- Tibial nerve (L5–S2)
A deep muscle on the inner back of the lower leg. Its tendon runs behind the inner ankle and splits into four, curling the small toes so the foot can grip the ground.
Flexor digitorum longus anatomy page →