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Tibialis anterior

The tibialis anterior (also tibialis anterior muscle, anterior tibial muscle, latin: musculus tibialis anterior) is a long, narrow muscle located in the anterior region of the lower leg.

Origin

The tibialis anterior originates from the lateral condyle and the upper two-thirds of the lateral surface of the tibia.

Insertion

The tibialis anterior inserts onto the medial cuneiform and the first metatarsal bone.

Action

The main functions of the tibialis anterior are extension, supination and adduction of the foot.

Innervation

The tibialis anterior muscle is innervated by the deep peroneal nerve, a branch of the common peroneal nerve.