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Tibial nerve

Other Terms: Medial popliteal nerve, Nervus tibialis, Nerf tibial

Description

The tibial nerve is a branch of the sciatic nerve. It passes through the popliteal fossa and passes below the soleus, close to the tibia. It then runs into the foot posterior to the medial malleolus. It supplies the two heads of the gastrocnemius, popliteus, soleus, and plantaris muscles. In the posterior compartment of the leg, it supplies the tibialis posterior, flexor digitorum brevis, and the flexor hallucis longus. It also supplies a cutaneous branch to the sural nerve which is joined by fibers from the common fibular nerve. The sural nerve supplies the skin of the posterolateral surface of the leg. In the foot, the tibial nerve divides into medial and lateral plantar branches

Origin

L4 through S3 anterior divisions

Innervates

Posterior compartment of thigh (semimembranosus, semitendinosus, long head of biceps femoris, posterior portion of adductor magnus) Posterior compartment of leg (gastrocnemius, soleus, flexor digitorum longus, flexor hallucis longus, tibialis posterior) Plantar muscles of foot

Actions

Flex Knee, Extend thigh, Plantar flex foot, Flex digits, Inversion

Latin

Nervus tibialis

French

Nerf tibial

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