Tibialis anterior muscle

The tibialis anterior muscle is the most medial muscle of the anterior compartment of the leg. The muscle ends in a tendon which is apparent on the anteriomedial dorsal aspect of the foot close to the ankle. Its tendon is ensheathed in a synovial sheath. The tendon passes through the medial compartment superior and inferior extensor retinacula of the foot. the adjoining part of the interosseous membrane and deep fascia overlying it,''' and the intermuscular septum between this muscle and the extensor digitorum longus. Insertion It is inserted into the medial and inferior surface of the medial cuneiform bone, and adjacent portion of the first metatarsal bone. == Function ==

The muscle helps maintain the medial longitudinal arch of the foot.''' The movements of tibialis anterior are dorsiflexion and inversion of the ankle. However, actions of tibialis anterior are dependent on whether the foot is weight bearing or not (closed or open kinetic chain). When the foot is on the ground, the muscle helps to balance the leg and talus on the other tarsal bones so that the leg is kept vertical even when walking on uneven ground. == Clinical significance ==

A tibialis anterior hernia is a rare type of hernia in which fat or other material protrudes through a defect in the tibialis anterior muscle. It may be caused by trauma, such as an inadvertent kick to the lower leg from an opposing player in a football match. == Additional images ==

File:Gray1240.png|Right leg, lateral aspect File:Tibialis anterior 2.png|Tibialis anterior muscle File:Braus 1921 293.png|Cross-section through top third of lower right leg File:Slide9DDDD.JPG|Tibialis anterior muscle. Dissection, coronal view File:Slide2WIKI.JPG|Ankle joint. Deep dissection, lateral view. This image has some structures labelled incorrectly: Tendons are misidentified here as "muscles"; actual cuboid bone is anterior to region of calcaneus indicated == See also ==