Posterior Cutaneous Nerve of the Arm

Description

Posterior Cutaneous Nerve of the Arm

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

Name

• Posterior cutaneous nerve of arm
• Internal cutaneous branch of musculospiral
• Posterior brachial cutaneous nerve
• Nervus cutaneus posterior brachii

General

• Sensory branch of the radial nerve
• Provides sensory information for much of the back of the arm

Gross Anatomy

• Originates in the axilla
• Passes to the medial side of the area supplying the dorsal surface almost to the olecranon
• Crosses behind and communicates with the intercostobrachial nerve

---

Clinical Significance

• Needs to be updated

---

See Also

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

---