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Ant. compartment of Leg
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Tibialis Anterior Proximal attachment
Lateral condyle, superior half of lateral surface of tibia, & interosseous membrane


Tibialis anterior Distal attachment
Medial and inferior surfaces of medial cuneiform & base of 1st metatarsal


Tibialis anterior Nerve
Deep fibular N. (L4,L5)


Tibialis anterior Action
Dorsiflexes ankle joint & inverts subtalar joint


Extensor Digitorum Longus Proximal attachment
Lateral condyle, superior three quarters of medial fibula, & interosseous membrane


Extensor Digitorum Longus Distal attachment
Middle and distal phalanges of lateral four digits


Extensor Digitorum Longus Nerve
Deep fibular N. (L5,S1)


Extensor Digitorum Longus Action
Extends lateral four digits and dorsiflexes ankle joint


Extensor Hallucis Longus Proximal attachment
Middle part of anterior surface of fibula & interosseous membrane


Extensor Hallucis Longus Distal attachment
Dorsal aspect of base of distal phalanx of great toe (hallux)


Extensor Hallucis Longus Nerve
Deep Fibular N. (L5,S1)


Extensor Hallucis Longus Action
Extends great toe & dorsiflexes ankle joint


Fibularis tertius Proximal attachment
Inferior third of anterior surface of fibula & interosseous membrane


Fibularis tertius Distal attachment
Dorsum of base of 5th metatarsal


Fibularis tertius Nerve
Deep Fibular N. (L5,S1)


Fibularis tertius Action
Dorsiflexes ankle & aids in eversion of subtalar joint
