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Tibialis anterior

Contents

Anatomy pictures

Tibialis anterior - anterior view
Tibialis anterior - anteriomedial view
Tibialis anterior - lateral view

Referred pain pattern

Tibialis anterior - pain pattern

Muscle Type

  • Phasic
    • Weakens when overactivated

Symptoms

  • Functional toe drop
  • 'Clumsy' while walking, stumbles over thresholds
  • Weakness of lifting the foot (dorsiflexion)

Muscular attachments

Origin of tibialis anterior

Insertion of tibialis anterior

Videos

Short version

Detailed version

Myofascial lines

Spiral line

Superficial ventral line

Anatomy

Position

  • Superficial

Origin

  • Condylus lateralis tibiae
  • Lateral surface of tibia, proximal 1/2
  • Membrana interossea, proximal 2/3
  • Deep fascia of the leg
  • Septum intermusculare laterale

Insertion

  • Medial and plantar part of os cuneiforme
  • Basis of 1. metatarsal

Main function

  • Ankle
    • Dorsiflexion
    • Inversion

Nerve innervation

  • Segmental
    • L4-S1
  • Peripheral
    • Deep part of the fibularis nerve

Arterial supply

  • Anterior part of the tibial artery

SYNERGISTS

  • Dorsiflexion:
    • Extensor digitorum longus
    • Peroneus tertius
    • Extensor hallucis longus
  • Inversion:
    • Tibialis posterior
    • Flexor digitorum longus
    • Flexor hallucis longus
    • Extensor hallucis longus
    • Gastrocnemius
    • Soleus
    • Plantaris

ANTAGONISTS

  • To dorsiflexion:
    • Gastrocnemius
    • Soleus
    • Plantaris
    • Peroneus longus
    • Peroneus brevis
    • Flexor hallucis brevis
    • Flexor hallucis longus
    • Tibialis posterior
  • To inversion:
    • Peroneus longus
    • Peroneus brevis
    • Peroneus tertius
    • Extensor digitorum longus