Tibialis anterior (Musculus tibialis anterior)
Educational content only — not medical advice.
Anatomy
The strongest anterior-leg-compartment muscle, running along the tibial lateral surface with its tendon crossing the ankle in the first compartment to the first metatarsal and medial cuneiform — the prime dorsiflexor.
Origin & insertion
Upper two-thirds of the tibial lateral surface, crural fascia and interosseous membrane.
Action
Dorsiflexes and inverts the foot, preventing toe-drag in the swing phase.
Innervation
Deep peroneal nerve (L4–L5).
Clinical notes
Palsy from peroneal nerve injury at the fibular neck creates foot drop with a high-stepping gait; its insertional tendinopathy in dancers causes medial midfoot pain.
Related structures
Educational references
FAQ
What is the role of the Tibialis anterior?
The strongest anterior-leg-compartment muscle, running along the tibial lateral surface with its tendon crossing the ankle in the first compartment to the first metatarsal and medial cuneiform — the prime dorsiflexor.
Why is the Tibialis anterior clinically important?
Palsy from peroneal nerve injury at the fibular neck creates foot drop with a high-stepping gait; its insertional tendinopathy in dancers causes medial midfoot pain.
Source & license
BodyParts3D, © The Database Center for Life Science licensed under CC Attribution 4.0 International (https://creativecommons.org/licenses/by/4.0/). license details