The extensor digitorum brevis is an intrinsic muscle of the foot. It is a small, thin muscle which lies underneath the long extensor tendons of the foot.
- Attachments: Originates from the calcaneus and inferior extensor retinaculum. It attaches onto the long extensor tendons of toes 2-4.
- Actions: Extension of the lateral four toes.
- Innervation: Deep fibular nerve.
- Blood Supply: Fibular artery and anterior tibial artery (dorsal pedis artery distally).
