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Extensor Pollicis Longus
From WikiSM
Origin
- Posterior surface of middle 1/3 of Ulna
- Interosseous Membrane
Insertion
- Posterior surface of base of distal phalanx of digit 1 (thumb)
Actions
- Extension of digit 1 (thumb) at the metacarpophalangeal and interphalangeal joints
- Wrist extension (weak)
Vascular Supply
- Posterior Interosseous Artery
- Anterior Interosseous Artery
Nerve
- Posterior Interosseous Nerve (C7-C8) (branch of Radial Nerve
Clinical Significance
See Also
- Physical Exam Hand
- Hand Pain (Main)
- Physical Exam Wrist
- Wrist Pain (Main)
- Physical Exam Forearm
- Forearm Pain (Main)
- Hand And Wrist Anatomy
References
Created by:
Chris Hauglid on 30 April 2020 08:21:59
Authors:
Last edited:
29 December 2021 06:43:38
Category:
