PT Master Guide

Extensor carpi radialis brevis muscle

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In this article we will discuss about Extensor carpi radialis brevis muscle. So let’s get started.

Extensor carpi radialis brevis

It originates from the lateral epicondyle of humerus (common extensor origin) and gets inserted into the dorsal surface of base of 3rd metacarpal. It is innervated by deep branch of radial nerve and artery supply is through the radial artery. It’s chief action is extension and abduction of hand at wrist joint. Clinically inflammation of ECRB tendon leads to “Tennis Elbow“.