Lumbricals of the Hand

Description

Lumbricals of the hand labeled I to IV.

Name

• Lumbricals of the Hand

Origin

• Radial aspect of tendons of flexor digitorum profundus

Insertion

• Dorsal aponeurosis of digits 2-5

Actions

• Flexion of digits 2-5 at the metacarpophalangeal joints
• Extension of digits 2-5 at the interphalangeal joints

Vascular Supply

• Anterior and Posterior Digital Arteries

Innervation

• Digits 2 & 3
  • Median Nerve (C8-T1)
• Digits 4 & 5
  • Ulnar Nerve (C8-T1)

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Clinical Significance

• Hand of Benediction
• Ulnar Claw
• Lumbricalgia
• Lumbrical Tendonitis

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See Also

• Physical Exam Hand
• Hand And Wrist Anatomy
• Hand Pain (Main)
• Wrist Pain (Main)

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