MuscleLeg — anterior compartment
Tibialis anterior
Latin: M. tibialis anterior sinistra
Location: Leg
Paired structure: one on the left and one on the right side of the body.
View the tibialis anterior in 3DOrigin
Lateral condyle and upper lateral shaft of the tibia, interosseous membrane.
Insertion
Medial cuneiform and first metatarsal bases (plantar surface).
Action
Dorsiflexes the ankle to clear the toes in the swing phase of gait, and inverts the foot; eccentrically lowers the foot after heel strike — controlling the foot-slap.
Nerve supply
Deep peroneal (fibular) nerve (L4–L5).
Blood supply
Anterior tibial artery.
Clinical relevance
Deep peroneal palsy or L5 radiculopathy drops the foot; acute anterior compartment syndrome after tibial fractures makes passive toe extension excruciating — a surgical emergency.
Educational anatomy reference, not medical advice. About this content.