Updated: 1/2/2022

Tibialis anterior

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  • Summary
    • Tibialis anterior
      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
      Insertion
      Medial and plantar surfaces of 1st cuneiform and 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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