Muscles Of Leg Anterior Compartment

Question 1

Name the muscles in this compartment

Answer 1

Tibialis anterior
Extensor digitorum longus
Extensor hallucis longus
Fibularis tertius

Question 2

Innervation and blood supply

Answer 2

Deep fibular nerve (L4-5)

Anterior tibial artery

Question 3

Tibialis anterior

Answer 3

Dorsiflexion and inversion of foot

Question 4

Extensor hallucis longus

Answer 4

Extension of great toe and dorsiflexion of foot

Question 5

Fibularis tertius

Answer 5

Eversion and dorsiflexion of foot

Question 6

Clinical relevance: footdrop

Answer 6

Due to paralysis of muscles in anterior compartment of leg; common fibular nerve is damaged.
Plantarflexor muscles in posterior compartment produce permanent plantarflexion - can interfere with walking.
Eversion flick to circumvent foot being dragged across ground.