Extensor Digitorum Communis Digit Long & Ring(EDC) Anatomy

EDC: 

  • Origin:
    • Humerus (lateral epicondyle via common extensor tendon)
    • Intermuscular septum
    • Antebrachial fascia
  • Insertion: Base of the middle and distal phalanges of the middle (long) and ring fingers
  • Innervation: Cervical root(s): C7 and C8 Nerve: radial nerve (posterior interosseous branch)
     
Diagrams & Photos
  • EDC
Key Points

EDC extends the index, long, ring, and little fingers simultaneously.

Anatomy References
Anatomic Abbreviations
Hand Surgery Resource Anatomy Diagnostic Guide (Chapter)