Muscle
Fibularis longus
Everts the foot, supports arches
High-yield
Superficial fibular nerve; everts and plantarflexes the foot; tendon crosses the sole to the medial cuneiform.
Overview
A lateral compartment muscle whose long tendon crosses the sole to support the transverse and lateral arches while everting and plantarflexing the foot.
Reference facts
- Origin
- Head and proximal lateral surface of the fibula
- Insertion
- Base of the 1st metatarsal and medial cuneiform (crossing the sole)
- Action
- Everts and plantarflexes the foot; supports the arches
- Innervation
- Superficial fibular (peroneal) nerve (L5, S1, S2)
- Blood supply
- Fibular (peroneal) artery
Frequently asked questions
What does the fibularis longus do?
The fibularis longus everts and plantarflexes the foot; supports the arches.
What nerve innervates the fibularis longus?
The fibularis longus is innervated by the superficial fibular (peroneal) nerve (L5, S1, S2).
Where does the fibularis longus attach?
The fibularis longus originates from the head and proximal lateral surface of the fibula and inserts on the base of the 1st metatarsal and medial cuneiform (crossing the sole).
What is the blood supply of the fibularis longus?
The fibularis longus is supplied by the fibular (peroneal) artery.