Flexor hallucis brevis
Feet
- Origin
- Cuboid and lateral cuneiform
- Insertion
- Both sides of the base of the proximal phalanx of the big toe (inner head with the abductor hallucis, outer head with the adductor hallucis)
- Action
- Flexes the big toe at its base joint
- Nerve supply
- Medial plantar nerve (S1–S3)
A two-headed muscle under the first metatarsal. Each head's tendon contains a small sesamoid bone, over which the big toe rolls when pushing off.
Flexor hallucis brevis anatomy page →