Tibialis Posterior

Original Editor - Michelle Lee Top Contributors - Jenny Lim
Tibialis-posterior-location.jpg

Description[edit | edit source]

The Tibialis Posterior is located in the deep compartment of the lower leg, and is a key stabilising muscle, supporting the medial arch of the foot.

Origin [1][edit | edit source]

Proximal postero-lateral aspect of the tibia.

Proximal postero-medial aspect of the fibula and the interosseous membrane

Mid portion: Situated in the deep posterior compartment of the lower leg and runs proximal to the medial malleoli where it is secured by the flexor retinaculum.

Insertion[1][edit | edit source]

The major insertion is onto the navicula and the plantar slip attatches to the medial cuniform

Nerve[1][edit | edit source]

Tibial Nerve (L4-S3)

Artery[1][edit | edit source]

Tibial Artery

Function[edit | edit source]

To plantarflex and invert the ankle. It also plays an important role in stabilising the medial longitudinal arch. Tibialis posterior dysfunction can lead to flat feet in adults.

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[2]

Clinical relevance[edit | edit source]

Tibialis Posterior Rupture

Shin Splints

Posterior Tibial Tendon Dysfunction

Assessment[edit | edit source]

Resisted Muscle Test:

Palpation Assessment:

Treatment[edit | edit source]

Strengthening exercises for Tibialis Posterior:

Resources[edit | edit source]

  1. 1.0 1.1 1.2 1.3 Drake RL, Vogl W, Mitchell AWM. Gray's Anatomy for Students. 2nd Ed. Philadelphia: Churchill Livingstone Elsevier, 2010.
  2. nabil ebraheim. Anatomy Of The Tibialis Posterior Muscle - Everything You Need To Know - Dr. Nabil Ebraheim. Available from: https://www.youtube.com/watch?v=9N_eR8Pojuw [last accessed: 25/6/18]
  3. Sheena Livingstone. Tibialis Posterior Muscle Test. Available from: http://www.youtube.com/watch?v=7cEJD-9aBTk [last accessed 25/6/18]
  4. PolkStatePTA. Tibialis Posterior. Available from: http://www.youtube.com/watch?v=f-vVv59NNBI [last accessed 25/6/18]