Distal Radioulnar Ligaments

Description

Illustration of the palmer radiolunar ligament (bottom right)

Dorsal radioulnar ligament

Name

• Distal Radioulnar Ligaments
• Distal Radioulnar Ligament Complex

General

• Pair of primary stabilizers of the distal radioulnar joint
• Includes the dorsal radioulnar ligament, volar radioulnar ligament
• Contributes to the triangular fibrocartilage complex

Gross Anatomy

• Deep and superficial division can be considered separate laminae
• Attach into the radial fovea and ulnar styloid respectively

Anatomic Relationships

• During pronation, volar ligament is lax and dorsal ligament tightens
• During supination, dorsal ligament relaxes and volar ligament tightens

Vascular Supply

• Palmer and Dorsal Branches of Anterior Interosseous Artery

Innervation

• Anterior Interosseous Nerve
• Posterior Interosseous Nerve

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Clinical Significance

• Distal Radioulnar Joint Dislocation
• Distal Radioulnar Joint Instability
• Distal Radial Ulnar Joint Injection
• Galeazzi Fracture
• Colles Fracture
• Smith Fracture

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See Also

• Wrist Anatomy Main
• Physical Exam Wrist
• Wrist Pain Main

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