Origin
Radius
Insertion
Proximal phalanx of the thumb.
Blood supply
Posterior interosseous artery.
Nerve supply
Posterior interosseous nerve.
Action
The muscle helps to extend the wrist as well as the thumb during activities like gripping and grasping.
Disease/Injury
Tendinitis of the extensor pollicis brevis because of its overuse is a relatively common and painful condition.
Muscle Exercise
By performing the barbell reverse wrist curls with your forearms resting on a bench you can increase the strength of your extensor pollicis brevis.
Interesting Facts
NA
