Extensor Digiti Minimi

Parent Structures

• Superficial Posterior Muscles of the Forearm

Proximal/Superior Attachment

• Lateral Epicondyle - Common Extensor Tendon

Distal/Inferior Attachment

• Base of 5th Middle Phalanx of the Hand - Dorsal Digital Expansion

Joint Actions

• Agonist
  • 5th Metacarpophalangeal Joint (5th MCP)
    • Extension
  • DIP of the 5th Phalanx of the Hand
    • Extension
  • PIP of the 5th Phalanx of the Hand
    • Extension
  • Wrist
    • Extension - After Little finger fully extended

Nerve Innervation

• Radial Nerve