Extensor Carpi Radialis Longus
Forearm & Wrist
A radial-side wrist extensor always active during power gripping — you use it every time you grip a steering wheel or a weight bar.
Function
Extends and abducts wrist
Origin
Lateral supracondylar ridge of humerus
Insertion
Base of second metacarpal
Innervation
Radial nerve (C6-C7)