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Tibialis posterior

Other Terms: Musculus tibialis posterior, Muscle tibial postérieur

Muscle parts

None

Latin name

Musculus tibialis posterior

Latin muscle parts

None

Group

Crural muscle – posterior compartment – deep group

Etymology

The English name for this muscle is the muscle before the shinbone. The word tibialis comes from the Latin word tibia meaning the “shinbone, or flute.” It was probably originally named for the shinbone and later took on the meaning of flute, because people made flutes from the tibiae of animal bones. The Latin term posterior is derived from the Latin post meaning “afterwards.”

Origin

Posterior surface of interosseous membrane and the adjacent surfaces of the tibia and the fibula.

Insertion

Tuberosity of the navicular bone, the plantar surface of the medial cuneiform bone, the tip of the sustentaculum tali, the plantar surface of the intermediate cuneiform, and the bases of the second, third, and fourth metatarsal bones.

Action

Primary inverter of the foot; assists in plantar flexion of the ankle joint.

Nerve supply

Tibial nerve (L4 and L5)

Blood supply

From proximal to distal, the muscle is supplied by the proximal most part of the anterior tibial artery, posterior tibial artery, peroneal artery. The medial malleolar artery and medial plantar artery supply the tendon.

Latin

Musculus tibialis posterior

French

Muscle tibial postérieur

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