Medial sural cutaneous nerve

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The medial sural cutaneous nerve is a sensory nerve in the lower limb. It is a branch of the tibial nerve, which is itself a branch of the sciatic nerve. The medial sural cutaneous nerve plays a crucial role in providing sensation to the skin of the posterior aspect of the leg.

Anatomy[edit | edit source]

The medial sural cutaneous nerve arises from the tibial nerve in the popliteal fossa, a shallow depression located at the back of the knee joint. It descends between the two heads of the gastrocnemius muscle, a major muscle of the calf, and continues down the leg.

As it travels down the leg, the medial sural cutaneous nerve is joined by the communicating branch of the lateral sural cutaneous nerve, which is a branch of the common fibular nerve. Together, these nerves form the sural nerve, which innervates the skin of the lower posterior leg and lateral aspect of the foot.

Function[edit | edit source]

The primary function of the medial sural cutaneous nerve is to provide sensory innervation to the skin of the posterior leg. It is responsible for transmitting sensory information such as touch, temperature, and pain from the skin to the central nervous system.

Clinical significance[edit | edit source]

The medial sural cutaneous nerve is often used in nerve grafting procedures due to its length and relatively superficial location. It can be harvested to repair nerve injuries elsewhere in the body without significant loss of sensation in the donor area.

Injuries to the medial sural cutaneous nerve can result in sensory deficits in its area of innervation. Such injuries may occur due to trauma, surgical procedures, or compression.

Also see[edit | edit source]

Template:Nerves of the lower limb

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