Deep Branch of the Ulnar Nerve

Description

Normal anatomy of the median and ulnar nerves. DorBUN dorsal branch of ulnar nerve, DBUN deep branch of ulnar nerve; SSBUN superficial sensory branch of ulnar nerve, CDN common digital nerve; PDN proper digital nerve (Green ulnar and Yellow median), RMN recurrent median nerve, PCBM Palmar cutaneous branch of median nerve (colour figure online)

Name

• Deep Branch of the Ulnar Nerve
• Deep Motor Branch of the Ulnar Nerve

General

• Terminal, motor branch of the ulnar nerve
• Courses between the hypothenar muscles into the deep palm
• Adjacent to the deep palmer branch of the ulnar artery

Motor Innervation

• Hypothenar Muscles
  • Opponens Digiti Minimi
  • Flexor Digiti Minimi brevis
  • Abductor Digiti Minimi
• Palmar Interosseous Muscles
• Dorsal Interosseous Muscles
• Medial two lumbricals
• Deep/medial head of flexor pollicis brevis
• Adductor Pollicis

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Clinical Significance

• Needs to be updated

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See Also

• Nerve Anatomy Main
• Hand Pain Main
• Physical Exam Hand

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