Extensor digiti I [pollicis] - Musculus extensor digiti I [pollicis]

Anatomical hierarchy

General terms > Myology > Muscles of thoracic limb > Extensor digiti I [pollicis]



The extensor digiti I and II muscles were formerly called m. extensor pollicis longus and indicis proprius In Car, these two muscles are combined together.


Origin: Middle third of the dorsolateral border of the ulna.

Insertion: Metacarpophalangeal joint of of digits one and two.

Action: Extension of digits one and two and adduction of digit one.

Nerve: Radialis.

Text by Antoine Micheau, MD - Copyright IMAIOS


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