Lateral brachial cutaneous nerve
Lateral Brachial Cutaneous Nerve
The Lateral Brachial Cutaneous Nerve (LBCN) is a nerve of the human body, specifically in the upper extremity. It is a branch of the Axillary Nerve and provides sensory innervation to the skin of the lateral part of the arm.
Anatomy[edit | edit source]
The LBCN arises from the posterior cord of the Brachial Plexus, with roots from the C5 and C6 spinal nerves. It travels along with the axillary nerve through the quadrangular space, where it is vulnerable to injury. It then pierces the deep fascia, becoming subcutaneous to supply the skin of the upper lateral part of the arm.
Clinical Significance[edit | edit source]
Damage to the LBCN can result in numbness or paresthesia in its area of innervation. This can occur due to trauma, surgery, or entrapment of the nerve.
See Also[edit | edit source]
References[edit | edit source]
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Contributors: Prab R. Tumpati, MD
