Superior Lateral Cutaneous Nerve of the Arm

Description

The Superior Lateral Cutaneous Nerve of the Arm is seen labeled in blue

Schematic representation of the sensory innervation of the upper limb. The skin territories of the branches of the brachial plexus are shown

Name

• Superior Lateral Cutaneous Nerve of the Arm
• Superior Lateral Brachial Cutaneous Nerve

General

• Sensory nerve of the upper limb
• Continuation of posterior branch of the axillary nerve
• Supplies sensation to the skin overlying the inferior portion of the deltoid muscle

Anatomic Course

• Continuation of the posterior branch of the axillary nerve
• Arises at the level of the surgical neck, moving superior and posterior
• As nerve enters subcutaneous plane, it becomes the superior lateral cutaneous nerve
• Terminates as a sensory branch overlying the skin

Sensory Supply

• Sensation to the skin overlying the inferior portion of the deltoid muscle
• Often called the "Regimental badge" area

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Clinical Significance

• Axillary Nerve Injury

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See Also

• Nerve Anatomy Main
• Arm Anatomy Main
• Arm Pain Main
• Physical Exam Elbow

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