Origin Lateral condyle of tibia, proximal 1/2 - 2/3 or lateral surface of tibial shaft, interosseous membrane, and the deep surface of the fascia cruris
Course Passes under superior and inferior extensor retinacula
Insertion Medial and plantar surfaces of 1st cuneiform and on base of first metatarsal
Action 1. Dorsiflexes ankle and inverts the hindfoot
2. Dorsiflexes foot in preparation for heel strike (late swing phase)
3. Eccentrically contracts after heel strike
Innervation Deep peroneal nerve (L4, L5)
Arterial Supply Anterior tibial artery




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