Anatomy study note · Lower limb

Deep fibular nerve

A terminal branch of the common fibular nerve that supplies the anterior compartment of the leg, extensor digitorum brevis and the skin of the first web space.

Key points

• Anterior compartment: TA, EHL, EDL, fibularis tertius.
• Runs with the anterior tibial artery.
• Skin of the first web space.
• Lateral to dorsalis pedis on the dorsum.
• Upper limb nerves: C4–T2 segments; lower limb: L2–S2.
• Ventral root: basal-lamina neurons. Dorsal root: neural-crest ganglion cells.
• Nerve: epineurium → perineurium (blood–nerve barrier) → endoneurium.
• Cut nerve: Wallerian degeneration; regrows 0.5–3 mm/day.

The full note in the atlas also covers

Course · Branches · Histology · Development · Clinical notes

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Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 11, PDF pp. 1352–1353, 1387
• Inderbir Singh’s Human Embryology, ch. 17, PDF pp. 318, 321, 323–325; ch. 10, PDF pp. 143–144
• BRS Cell Biology & Histology, 7th ed., ch. 9, PDF pp. 163–166, 171–172

More from the lower limb

• Deep veins of the leg and foot
• Dorsalis pedis artery
• Extensor digitorum brevis
• Extensor digitorum longus
• Extensor hallucis longus
• Femoral artery
• Femoral nerve
• Femoral vein
• Femur
• Fibula
• Fibularis brevis
• Fibularis longus

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