Anatomy - Extensor carpi radialis longus muscle

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Extensor carpi radialis longus - Insertion

Base of the second metacarpal (dorsal surface)

Extensor carpi radialis longus - Action

Extension of the wrist, abduction of the wrist, weak flexion of the elbow, weak pronation to neutral from a fully supinated position

Extensor carpi radialis longus - Origin

Lower third of lateral supracondylar ridge of humerus and lateral epicondyle of the humeral

Extensor carpi radialis longus - Innervation

Radial nerve (C6, C7)


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