Tibialis posterior muscle

Dr Jeremy Jones et al.

The tibialis posterior muscle is one of the small muscles of the deep posterior compartment of the leg.


  • origin: inner posterior borders of the tibia and fibula
  • insertion: navicular and medial cuneiform
    • the tendon splits into two slips after passing inferior to plantar calcaneonavicular ligament
      • the superficial slip inserts on the tuberosity of the navicular bone and sometimes medial cuneiform
      • the deeper slip divides again into slips inserting on plantar surfaces of metatarsals 2 - 4 and second cuneiform
  • action: plantarflexion and inversion of the foot
  • arterial supply: posterior tibial artery
  • innervation: tibial nerve
  • antagonist: tibialis anterior
Anatomy: Lower limb
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Article information

rID: 6026
Section: Anatomy
Synonyms or Alternate Spellings:
  • Tibialis posterior
  • Posterior tibialis tendon (PTT)
  • Tibialis posterior (TP) muscle

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Cases and figures

  • Figure 1
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  • Figure 2: Lower leg axial section - Gray's anatomy illustration
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