View source for Tibialis posterior muscle

{{Infobox Muscle |
  Name         = {{PAGENAME}} |
  Latin        = musculus tibialis posterior  |
  GraySubject  = 129 |
  GrayPage     = 484 |
  Image        = Gray442.png |
  Caption      = The mucous sheaths of the tendons around the ankle. Medial aspect. (Tibialis posterior labeled at top center.) |
  Image2       =  |
  Caption2     = |
  Width        = 222 |
  Origin       = [[tibia]], [[fibula]] |
  Insertion    = [[Navicular bone|navicular]], [[Medial cuneiform bone|medial cuneiform]] |
  Blood        = [[posterior tibial artery]] |
  Nerve        = [[tibial nerve]] |
  Action       = [[Inversion (kinesiology)|inversion of the foot]], [[plantar flexion]] of the [[foot]] at the [[ankle]] |
  Antagonist   = [[Tibialis anterior muscle]] |
  DorlandsPre  = m_22 |
  DorlandsSuf  = 12551177  |
}}
{{CMG}}

{{EH}}

==Overview==
The '''Tibialis posterior''' is the most central of all the [[leg]] [[muscle]]s. 

It is the key stabilising 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 the decends down 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 [[Cuneiform (anatomy)|cuneiforms]], the [[cuboid bone|cuboid]] and the second, third and fourth [[metatarsals]].

==Function==
As well as being a key muscle for stabilisation, the tibialis posterior muscle also contracts to produce [[Anatomical_position|inversion of the foot]] and assists in the [[plantar flexion]] of the foot at the ankle.

==Additional images==
<gallery>
 Image:Gray259.png|Bones of the right leg. Posterior surface.
 Image:Gray269.png|Bones of the right foot. Plantar surface.
 Image:Gray357.png|Coronal section through right talocrural and talocalcaneal joints.
 Image:Tibialis posterior.png|Muscles of the back of the leg. Deep layer. 
 Image:Gray445.png|Muscles of the sole of the foot. Third layer.
 Image:Gray551.png|The popliteal, posterior tibial, and peroneal arteries.
</gallery>

==External links==
* {{MuscleLoyola|tibp}}
* {{SUNYAnatomyLabs|15|st|04|16}}
* {{eMedicineDictionary|Tibialis+posterior}}
* [http://www.rad.washington.edu/atlas2/tibialisposterior.html Diagram at washington.edu]
* [http://www.latrobe.edu.au/podiatry/myofasc/myofascialpics/fig10.jpg Diagram at latrobe.edu.au]

{{Muscles of lower limb}}
[[Category:Calf muscles]]

[[de:Musculus tibialis posterior]]
[[he:השריר השוקתי האחורי]]
[[ja:後脛骨筋]]
{{WikiDoc Sources}}