Tibialis anterior muscle

Last revised by Dr Joachim Feger on 05 Jul 2021

The tibialis anterior muscle is one of the muscles of the anterior compartment of the leg involved in dorsiflexion and inversion of the foot.

Summary
  • origin: upper half of lateral half of tibia and adjacent interosseous membrane 
  • insertion: inferomedial aspect of medial cuneiform and base of first metatarsal
  • action:
    • dorsiflexion of foot at ankle
    • inversion of the foot (at subtalar and midtarsal joints)
    • helps to hold up medial longitudinal arch of foot 
  • arterial supply: anterior tibial artery
  • innervation: deep peroneal nerve  (L4. L5)
  • key relationships:
    • ​pierces the superior extensor retinacula but travels deep to the inferior retinacula
  • antagonists
  • variants: 
    • os sesamoideum tibialis anterior

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Cases and figures

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