Anterior Compartment - Dorsiflexion/Extension

Question 1

Tibialis anterior

Answer 1

O: Lateral condyle, proximal half of lateral tibia, interosseous membrane

I: Medial plantar surfaces of
medial cuneiform and base of 1st metatarsal

I: Deep fibular nerve

B: Anterior tibial artery

A: Dorsiflexes foot at ankle and
inverts foot

Question 2

Extensor digitorum longus

Answer 2

O: Lateral condyle of tibia, proximal 3/4 of
anterior surface of interosseous membrane and fibula

I: Middle and distal phalanges of
lateral four digits

I:Deep fibular nerve

B: Anterior tibial artery

A: Extends lateral four digits and
dorsiflexes foot at ankle

Question 3

Extensor hallucis longus

Answer 3

O: Middle part of anterior surface of fibula and interosseous membrane

I: Dorsal aspect of base of distal
phalanx of great toe

I: Deep fibular nerve

B: Anterior tibial artery

A: Extends great toe, dorsiflexes foot
at ankle

Question 4

Fibularis peroneus tertius

Answer 4

O: Distal third of anterior surface of fibula and interosseous membrane

I: Dorsum of base of 5th metatarsal

I: Deep fibular nerve

B: Anterior tibial artery

A: Dorsiflexes foot at ankle and aids
in eversion of foot