Atlas of Human Anatomy by Netter

[Plate 509, Muscles of Leg: Lateral View]

Anterior (= extensor) compartment

Primarily dorsiflexors of ankle

Include

Tibialis anterior (also inverts foot and holds up medial longitudinal arch of foot)

Extensor hallucis longus (also dorsiflexes hallux and inverts foot)

Extensor digitorum longus (also dorsiflexes toes)

Peroneus tertius (also everts foot)

Muscles of the Anterior Leg

Muscle Origin Insertion InnervationBlood

Supply

Action

Tibialis

anterior

Lateral condyle and proximal half of

lateral tibia, interosseous membrane

Medial plantar surfaces of

medial cuneiform and base of

first metatarsal

Deep

fibular

nerve (L4-

L5)

Anterior

tibial

artery

Dorsiflexes ankle and

inverts foot

Extensor

hallucis

longus

Middle part of anterior surface of fibula

and interosseous membrane

Dorsal aspect of base of distal

phalanx of great toe

Deep

fibular

nerve (L5-

S1)

Anterior

tibial

artery

Extends great toe and

dorsiflexes ankle

Extensor

digitorum

longus

Lateral condyle of tibia and proximal three

quarters of anterior surface of

interosseous membrane

Middle and distal phalanges of

second through fifth toes

Deep

fibular

nerve (L5-

S1)

Anterior

tibial

artery

Extends second

through fifth toes and

dorsiflexes ankle

Fibularis

(peroneus)

tertius

Distal third of anterior surface of fibula

and interosseous membrane

Dorsum of base of fifth

metatarsal

Deep

fibular

nerve (L5-

S1)

Anterior

tibial

artery

Dorsiflexes ankle and

aids in eversion of foot

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