Medial Cutaneous Nerve of Arm

Description

The medial cutaneous nerve is seen labeled in mustard yellow

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

Name

• Medial Cutaneous Nerve of Arm
• Medial brachial cutaneous nerve
• Lesser internal cutaneous nerve
• Nerve of Wrisberg

General

• Sensory branch originating from the medial cord of the brachial plexus and roots C8-T1
• Provides sensory innervation of the medial arm
• Descends the extremity accompanied by the basilic vein

Gross Anatomy

• Smallest and most medial branch of the brachial plexus
• Passes through the axilla
• Initially behind and then medial to axillary vein
• Communicates with intercostalbrachial nerve
• Descends medial to brachial artery
• Pierces the deep fascia
• Innervates with the posterior lower third of the arm down to the elbow
• Communicates with the medial cutaneous nerve of arm

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Clinical Significance

• Needs to be updated

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See Also

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

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