Medial Plantar Nerve

Description

Diagram of the segmental distribution of the cutaneous nerves of the sole of the foot

A) Anatomy of the medial plantar nerve. B) Coronal T2 fat-saturated MRI labeled to illustrate the medial plantar nerve and adjacent structures.

Sensory distribution of the plantar foot including the medial calcaneal nerve, medial plantar nerve, saphenous nerve, sural nerve and lateral plantar nerve

Other Names

• Medial Plantar Nerve (MPN)

General

• Terminal branch of the Posterior Tibial Nerve

Anatomic Course

• Tibial nerve most commonly bifurcates into the MPN and Lateral plantar nerve (LPN) within the tarsal tunnel
• Typically, the MPN arises beneath the flexor retinaculum and traverses a fibro-osseous tunnel, or fascial sling
• Bordered superiorly by the Spring Ligament, inferiorly by the Abductor Hallucis muscular attachment to the navicular
• It then extends distally, just plantar to the master Knot of Henry (MKH), which is the crossing point of the Flexor Hallucis Longus and Flexor Digitorum Longus tendons.

Motor innervation

• Abductor Hallucis
• Flexor Hallucis Brevis
• Flexor Digitorum Brevis
• First lumbrical muscles

Sensory innervation

• Medial and plantar aspects of the foot
• Plantar aspect of the 1st–3rd toes
• Medial aspect of the 4th toe

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Clinical Significance

• Joggers Foot

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See Also

• Foot Pain (Main)
• Foot Anatomy (Main)
• Neuropathies Main

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