Tibialis anterior muscle

The tibialis anterior referred (Latin for " tibialis anterior " ) in the domestic mammals as cranial tibialis, runs forth on the outside of the leg next to the shin and stops short of the ankle. The German term " foot lifter " describes its main function. It runs out into a chord that is deflected by the belts of the ankle and ends at the inside of the foot, approximately in the middle of the arch of the foot.

Innervation

The tibialis anterior muscle is innervated by the deep peroneal nerve, which receives its fibers over the common peroneal nerve, sciatic nerve and lumbosacral plexus of the nerve roots L4 and L5.

Vascular supply

The muscle is supplied with arterial blood from the anterior tibial artery.

Function

The tibialis anterior muscle pulls the free leg to walk up ( and dumps him to the outside at the same time; supination ), the pillar, it ensures that the tibia is pulled down. Thus, the body falls when walking in the next step. In unfamiliar, long marches he is the first muscle that fatigues, which is why you eventually begins to " stumble over his own feet ." Paralysis of the tibialis anterior muscle leads to the so-called stepper gear. The tibialis dampens when walking, running and jumping the heel strike by pulling it forward and elastic reacts at touchdown.

The musculi tibialis anterior and peroneus longus also together form the so-called " stirrup ". The name comes from the fact that they, from medial (inside ) of the tibialis anterior and lateral ( outside ) of the peroneus longus, the foot, like a stirrup, enclose.

Antagonists

Opponent are the muscles of the dorsal the compartment: the gastrocnemius and soleus.