Saphenous nerve

Saphenous nerve is a branch of the femoral nerve, the largest nerve in the anterior division of the lumbar plexus. It is a purely sensory nerve, and has the longest course of any nerve in the body.

Anatomy

The saphenous nerve is derived from the lumbar plexus, originating from the posterior divisions of the second, third, and fourth lumbar nerves. It descends through the femoral triangle lateral to the femoral vessels, deep to the sartorius muscle.

Function

The saphenous nerve provides sensory innervation to the skin of the medial side of the leg and foot, up to the base of the big toe. It does not supply any muscles.

Clinical significance

Damage to the saphenous nerve can result in loss of sensation along the medial aspect of the lower leg. This can occur as a result of trauma, surgery, or disease processes such as diabetes mellitus.

See also

• Femoral nerve
• Lumbar plexus
• Sartorius muscle

References

Saphenous nerve Resources
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