Extensor Digiti Minimi

Description

Illustration of extensor digiti minimi

Introduction

• Names: extensor digiti quinti proprius, extensor digit minimi
• Traverses the 5th dorsal extensor compartment of the wrist

Origin

• Lateral epicondyle (common extensor tendon)

Insertion

• Extensor expansion of digit 5

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Actions

• Extension of digit 5 at metacarpophalangeal joint
• Extension of wrist

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Vascular Supply

• Radial Recurrent Artery
• Anterior Interosseous Artery
• Posterior Interosseous Artery

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Nerve

• Posterior Interosseous Nerve (C7-C8)

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Clinical Significance

• Lateral Epicondylitis
• Fifth Dorsal Compartment of the Wrist Injection
• Extensor Digiti Minimi Tendinopathy

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See Also

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

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