Tibialis Anterior

Wikis > Anatomy > Muscles > Leg Muscles > Tibialis Anterior

Tibialis anterior:
Proximal attachment – proximal 1/2 of anterior lateral surface of tibia; interosseous membrane; lateral condyle of tibia
Distal attachment – 1st metatarsal base and inferomedial aspect of medial cuneiform
Open chain function – ankle dorsiflexion and inversion of tarsus
Closed chain function – deceleration of ankle plantarflexion; inversion of forefoot; dorsiflexion of first ray; in those with a medially located subtalar joint action, the tendon will insert lateral to the axis  evertor of the foot
Nerve supply –deep peroneal (L4, L5, S1)
Arterial supply – anterior tibial artery

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