Fibularis longus
Musculus fibularis (peroneus) longus
MuscularSuperficial musclesLegLeft and right
View left in 3D View right in 3D
- What it is
- Superficial muscle of the lateral compartment, arising from the head and upper two-thirds of the lateral fibula (also called peroneus longus).
- Function
- Everts the foot and plantarflexes the ankle; with tibialis anterior it forms a "stirrup" under the foot that supports the transverse arch.
- Size
- Belly about 20 cm long.
- Clinical note
- The common fibular nerve winds around the fibular neck deep to its origin - a vulnerable spot for compression by casts, braces or leg-crossing.