The tibialis anterior muscle is the most medial of the four anterior leg muscles.
It originates on a large surface of the lateral face of the tibia (lateral condyle and upper half of the lateral surface of the tibia), from the superomedial portion of the interosseous membrane, from the crural fascia and from the intermuscular septum.
The triangular-shaped muscular abdomen ends in a tendon that is inserted on the plantar face of the medial cuneiform bone and of the metatarsal bone.
It contracts superficially with the crural fascia, deeply with the interosseous membrane, medially with the tibia and laterally with the extensor muscles of the fingers and the big toe.
With its action it flexes dorsally, adducts (supine) and rotates the foot.
It is innervated by the deep peroniere (L4-L5)
| ORIGIN Lateral condyle (Gerdy's tubercle) and upper half of the lateral surface of the tibia, superomedial portion of the interosseous membrane, crural fascia, intermuscular septum |  |
| INSERTION Tubercle of the first cuneiform and base of the first metatarsal | |
| ACTION Flexes dorsally, adducts (supine) and rotates the foot medially | |
| INNERVATION Deep peroneal nerve (L4-L5) |
| Upper limb | Lower limb | Trunk | Abdomen | Articles |
