Tibialis posterior muscle
- Tibialis posterior muscle
Infobox Muscle
Name = PAGENAME
Latin = musculus tibialis posterior
GraySubject = 129
GrayPage = 484
Caption = The mucous sheaths of the tendons around the ankle. Medial aspect. (Tibialis posterior labeled at top center.)
Caption2 =
Width = 222
Origin = tibia, fibula
Insertion = navicular, medial cuneiform
Blood = posterior tibial artery
Nerve = tibial nerve
Action = inversion of the foot, plantar flexion of the foot at the ankle
Antagonist = Tibialis anterior muscle
DorlandsPre = m_22
DorlandsSuf = 12551177
The Tibialis posterior is the most central of all the leg muscles.
It is the key stabilizing muscle of the lower leg.
Origin and insertion
It originates on the inner posterior borders of the tibia and fibula. It is also attached to the interosseous membrane, which attaches to the tibia and fibula.
The tendon of tibialis posterior descends posterior to the medial malleolus and to the plantar surface of the foot where it inserts on to the tuberosity of the navicular, the first and third cuneiforms, the cuboid and the second, third and fourth metatarsals.
Function
As well as being a key muscle for stabilization, the tibialis posterior muscle also contracts to produce inversion of the foot and assists in the plantar flexion of the foot at the ankle.
=Additional
Tibialis posterior also has a major role in supporting the medial arch of the foot and therefore dysfunction can lead to flat feet in adults (as well as unopposed eversion as inversion is lost, leading to a valgus deformity).
External links
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* [http://www.rad.washington.edu/atlas2/tibialisposterior.html Diagram at washington.edu]
* [http://www.latrobe.edu.au/podiatry/myofasc/myofascialpics/fig10.jpgDiagram at latrobe.edu.au]
Wikimedia Foundation.
2010.
Look at other dictionaries:
tibialis posterior muscle — musculus tibialis posterior … Medical dictionary
Tibialis anterior muscle — Lateral aspect of right leg … Wikipedia
tibialis posterior — noun a deep muscle of the leg • Syn: ↑tibialis posticus • Hypernyms: ↑tibialis, ↑tibialis muscle, ↑musculus tibialis * * * noun see tibialis … Useful english dictionary
Muscle — is the tissue of the body which primarily functions as a source of power. There are three types of muscle in the body. Muscle which is responsible for moving extremities and external areas of the body is called "skeletal muscle." Heart… … Medical dictionary
Muscle tibial postérieur — Muscle jambier postérieur Le muscle tibial postérieur. Le muscle tibial postérieur (Musculus Tibialis Posterior) ou, anciennement, muscle jambier postérieur est un muscle qui s étend de la partie postérosupérieure de la jambe à la plante du pied … Wikipédia en Français
musculus tibialis posterior — [TA] posterior tibial muscle: origin, tibia, fibula, interosseous membrane; insertion, bases of second to fourth metatarsals and tarsals, except talus; innervation, tibial; action, plantar flexes and inverts foot … Medical dictionary
muscle — muscleless, adj. muscly, adj. /mus euhl/, n., v., muscled, muscling, adj. n. 1. a tissue composed of cells or fibers, the contraction of which produces movement in the body. 2. an organ, composed of muscle tissue, that contracts to produce a… … Universalium
Muscle — For other uses of Muscle , see Muscle (disambiguation). A top down view of skeletal muscle Muscle (from Latin … Wikipedia
tibialis — SYN: tibial. [L.] * * * tib·i·a·lis .tib ē ā ləs n, pl tib·i·a·les (.)lēz either of two muscles of the calf of the leg: a) a muscle arising chiefly from the lateral condyle and part of the shaft of the tibia, inserting by a long tendon into the… … Medical dictionary
tibialis — noun either of two skeletal muscle in each leg arising from the tibia; provides for movement of the foot • Syn: ↑tibialis muscle, ↑musculus tibialis • Hypernyms: ↑skeletal muscle, ↑striated muscle • Hyponyms: ↑tibia … Useful english dictionary
