Extensor Digitorum Brevis

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).

By TeachMeSeries Ltd (2025)

Fig 1.0
The dorsal layer of foot muscles.