Tibialis Anterior - Muscle Physiology & Functional Anatomy


Tibialis Anterior Muscle




  • Lateral tibia (Upper half of lateral shaft of tibia & interosseous membrane)


  • Medial & plantar aspect of medial cuneiform & base of 1st metatarsal

Major Arteries:

  • Anterior tibial artery


Neural Innervation:

  • Deep fibular (peroneal) nerve (L4-L5)


Trigger Points: 

Tibialis Anterior Trigger Points




Concentric Functions:

  • Dorsiflexion & inversion of the foot at ankle

Eccentric Functions:

  • Decelerates plantarflexion & eversion of the foot at ankle

Isometric Function:

  • Holds up medial longitudinal arch of foot

Related Muscles





More Images of the Tibialis Anterior Muscle

Tibialis Anterior

More Information about the Tibialis Anterior Muscle

The tibialis anterior stabilizes the the ankle as the foot hits the ground during the contact phase of walking (eccentric contraction) & acts later to pull the foot clear of the ground during the swing phase (concentric contraction).

An isometric contraction of the tibialis anterior is what "locks" the ankle in place when kicking.  The tibialis anterior muscle is sometimes referred to in reverse as anterior tibialis. 


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