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Elsevier
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Superior Lateral Brachial Cutaneous Nerve
Nervous System

Superior Lateral Brachial Cutaneous Nerve

Nervus cutaneus lateralis superior brachii

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Origin

The superior lateral brachial cutaneous nerve arises from the axillary nerve. It contains sensory nerve fibers which eventually relay the sensory information to the dorsal horns of the C5 and C6 cervical segments of the spinal cord.

Course

The superior lateral brachial cutaneous nerve exits the axilla via the quadrangular space to enter the posterior scapular region, as the distal continuation of the axillary nerve. It loops around the posterior aspect of the deltoid muscle and travels superiorly to innervate the skin of the posterior arm, including the skin over the inferior part of the deltoid.

Branches

No named branches.

Supplied Structures

The superior lateral brachial cutaneous nerve carries general sensations from the skin over the posterior arm and the inferior part of the deltoid muscle region.

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Cutaneous Nerve

ScienceDirect image

The medial antebrachial cutaneous nerve is a pure sensory nerve that originates from the medial cord of the brachial plexus and innervates the skin of the medial forearm.

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