Posterior Tibialis Muscle

Description

Tibialis Posterior tendon

Tibialis posterior

Medial view of the ankle joint presenting the contents of the tarsal tunnel; tibialis posterior tendon (TP), flexor digitorum longus tendon (FDL), posterior tibial artery (PTA), posterior tibial vein (PTV), tibial nerve (TN) and the tendon of flexor hallucis longus (FHL), deep to the flexor retinaculum (FR). The bifurcation (B) points of the PTA (PTA B) and TN (TN B) are also represented

Name

• Posterior tibial tendon
• Posterior tibialis
• Tibialis Posterior
• Posterior Tibial Muscle
• Tibialis Posterior Muscle
• Tibialis Posterior Tendon
• Posterior Tibialis Tendon

General

• One of the muscles of the deep posterior compartment of the leg
• Most central of all the leg muscles, helps with plantarflexion, inversion

Origin

• Fibula (posterior surface)
• Tibia (posterior surface)
• Interosseous Membrane

Insertion

• Navicular
• Cuneiform Bones (all of them)
• Cuboid
• Metatarsal bones 2-4 (bases)

Actions

• Plantar Flexion and Inversion of foot
• Stabilizes medial longitudinal arch of foot

Vascular Supply

• Posterior Tibial Artery

Innervation

• Tibial Nerve (L4-L5)

Subtendinous bursa of the tibialis posterior

• Not well described in the medical/ anatomy literature

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Clinical Significance

Pathology

• Acute Compartment Syndrome
• Chronic Exertional Compartment Syndrome
• Posterior Tibial Tendon Dysfunction
• Pes Planus

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See Also

• Physical Exam Ankle
• Ankle Anatomy (Main)
• Ankle Pain (Main)

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