Nerve
Deep fibular (peroneal) nerve
Anterior compartment of the leg
High-yield
Motor to the anterior compartment (dorsiflexors); sensory only to the first dorsal webspace between toes 1 and 2.
Overview
A branch of the common fibular nerve supplying the dorsiflexors and a small web of skin between the first two toes.
Reference facts
- Roots
- L4, L5, S1 (from the common fibular nerve)
- Course
- Pierces the anterior intermuscular septum, descends on the interosseous membrane with the anterior tibial artery, and continues onto the dorsum of the foot
- Motor
- Tibialis anterior, extensor digitorum longus, extensor hallucis longus, fibularis tertius, and extensor digitorum brevis
- Sensory
- Skin of the web space between the first and second toes
Frequently asked questions
What are the roots of the deep fibular (peroneal) nerve?
The deep fibular (peroneal) nerve arises from L4, L5, S1 (from the common fibular nerve).
What muscles does the deep fibular (peroneal) nerve supply?
The deep fibular (peroneal) nerve supplies the tibialis anterior, extensor digitorum longus, extensor hallucis longus, fibularis tertius, and extensor digitorum brevis.
What is the sensory distribution of the deep fibular (peroneal) nerve?
The deep fibular (peroneal) nerve carries sensation from the skin of the web space between the first and second toes.
What is the course of the deep fibular (peroneal) nerve?
Pierces the anterior intermuscular septum, descends on the interosseous membrane with the anterior tibial artery, and continues onto the dorsum of the foot.