Extensor pollicis muscle
Musculus extensor digiti I [pollicis]
- Synonym: Extensor muscle of first digit
Definition
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.
References
Text by Antoine Micheau, MD - Copyright IMAIOS
