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Extensor Carpi Radialis Longus

Extensor Carpi Radialis Longus is, as the name suggests, the longer of the two extensor carpi radialis muscles as its origin is the ridge above the lateral epicondyle of the humerus, as opposed to the medial epicondyle.

Origin

• Lateral supracondylar ridge of the humerus

Insertion

• Base of the 2nd metacarpal (dorsal side)

Actions

• Extension of the wrist
• Radial deviation (abduction) of the wrist

Innervation

• Radial nerve

Daily uses

• Typing

How can I stretch it?

• Wrist extensor stretch
• Wrist extensor stretch II
• Tennis elbow stretch

How can I strengthen it?

• Wrist extension with a dumbbell
• Wrist extension with a resistance band