Extensor Digitorum

Description

Posterior forearm with extensor digitorum in purple

Names

• Extensor Digitorum Communis
• Extensor Digitorum

Origin

• Lateral epicondyle (common extensor tendon)

Insertion

• Extensor expansion of middle and distal phalanges of digits 2, 3, 4, and 5

Actions

• Extension of wrist, hand, and fingers

Vascular Supply

• Posterior Interosseous Artery

Nerve

• Posterior Interosseous Nerve (C7-C8)

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Clinical Significance

• Lateral Epicondylitis

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See Also

• Physical Exam Hand
• Hand And Wrist Anatomy
• Hand Pain (Main)
• Wrist Pain (Main)

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