Tibialis anterior muscle
|Tibialis anterior muscle|
|Human lower leg muscles from the front|
|Lateral condyle of the tibia , interosseous membrane|
|Plantar surface of the medial cuneiform , the base of the metatarsal I|
|Lifts the foot (dorsiflexion) and especially the inner edge of the foot (supination)|
|Deep peroneal nerve|
The tibialis anterior muscle ( Latin for "anterior tibial muscle "), known in domestic mammals as the tibialis cranialis muscle , runs on the outside of the leg next to the shin and ends just before the ankle . The German term "Fußifte" describes its main function. It ends in a tendon that is deflected by the ligaments of the ankle and ends on the inside of the foot, approximately in the middle of the arch of the foot.
The M. tibialis anterior is innervated by the Nervus fibularis (peroneus) profundus , which receives its fibers from the nerve roots L4 and L5 via the Nervus common peroneus , Nervus ischiadicus and Plexus lumbosacralis .
The muscle is supplied with arterial blood from the anterior tibial artery .
The tibialis anterior muscle pulls the foot up on the free leg (and at the same time tilts it outwards; supination ), on the standing leg it ensures that the shin is pulled down. This causes the body to fall into the next step while walking. On unfamiliar, long marches, it is the first muscle to tire, which is why you finally begin to “trip over your own feet”. Paralysis of the tibialis anterior muscle leads to the so-called stepper gait . When walking, running and jumping, the tibialis cushions the heel touchdown by pulling it forward and reacting elastically when it touches down.
The tibialis anterior and peroneus longus muscles also together form what is known as the “stirrup”. The name comes from the fact that they enclose the foot like a stirrup from the medial (inside) the tibialis anterior muscle and from the lateral (outside) the peroneus longus muscle.
Opponents are the muscles of the dorsal compartment: the gastrocnemius muscle and the soleus muscle .
Bones of the right foot with muscle attachments, bottom view (from the plantar side ).