Fibularis tertius
Peroneus tertius · Lower legs
- Origin
- Lower front surface of the fibula and the interosseous membrane
- Insertion
- Dorsal surface of the base of the fifth metatarsal
- Action
- Dorsiflexes and everts the foot
- Nerve supply
- Deep fibular nerve (L5–S1)
A small muscle on the front of the lower leg, often described as a fifth tendon of the toe extensors. Unlike the other two fibularis muscles it lifts the foot, and it is absent in some people.
Fibularis tertius anatomy page →