Fibularis longus

fibularis longus
Animation
Mucous sheaths of tendons around right ankle, lateral aspect. (Tendon-sheath of fibularis longus labeled as peronaeus longus at bottom center.)
Details
Origin	Proximal part of lateral surface of shaft of fibula[1] and head of fibula
Insertion	First metatarsal, medial cuneiform[1]
Artery	Fibular (peroneal) artery
Nerve	Superficial fibular nerve[1]
Actions	Plantarflexion, eversion, support arches[1]
Antagonist	Tibialis anterior muscle
Identifiers
Latin	musculus fibularis longus
TA98	A04.7.02.041
TA2	2652
FMA	22539
Anatomical terms of muscle [edit on Wikidata]

In human anatomy, the fibularis longus (also known as peroneus longus) is a superficial muscle in the lateral compartment of the leg. It acts to tilt the sole of the foot away from the midline of the body (eversion) and to extend the foot downward away from the body (plantar flexion) at the ankle.

The fibularis longus is the longest and most superficial of the three fibularis (peroneus) muscles. At its upper end, it is attached to the head of the fibula, and its "belly" runs down along most of this bone. The muscle becomes a tendon that wraps around and behind the lateral malleolus of the ankle, then continues under the foot to attach to the medial cuneiform and first metatarsal. It is supplied by the superficial fibular nerve.