Medial cutaneous nerve

The medialcutaneous nerve is located in the arm. It spreads through the middle of thearm, also known as the medial brachial area. It is also called the lesser internal cutaneous nerve inmedical terminology, or the medialcutaneous nerve of the arm. This nerve is part of the brachial plexus groupof fibers that originates from the spine. It is the smallest nerve of thisgroup. The brachial plexus provides a majority of the upper limbs’ skin andmuscles with nerve fibers. It begins in the medial cords, and accepts fibersfrom thoracic and eighth cervical nerves. The lesser internal cutaneous nervegoes along the brachial artery and penetrates into the deep fascia. The medial cutaneousnerve is present in the skin from the lowest portion of the back of the arm. Itsometimes extends as high as the elbow. This nerve always works incommunication with the medial antebrachial cutaneous nerve of the ulnar branch.

Written and medically reviewed by the Healthline Editorial Team
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In Depth: Medial cutaneous nerve

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