| Distal Radio-Ulnar joint |
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Classification |
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 Uniaxial syno
vial pivot point |
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Articular surfaces |
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- Convex head of the Ulnar
- The concave Ulnar notch of the radius
- Convex proximal surface of the carpus ( formed by the scaphoid , lunate and the triquetrium and their interosseous ligaments
Note: The triangular, fibrocartilaginous articular disc is attached by its base to the lower margin of the Ulnar notch of the radius and by its apex to a fossa at the base of the Ulnar styloid. The proximal surface of the disc articulates with the ulnar head |
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Capsule |
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- Attached to the margins of the articulating surfaces and is continuous with the capsule of radio-carpal joint
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Synovial membrane |
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• Projects proximally, as the recessus sacciformis, posterior to the pronator quadratus and anterior to the interosseus membrane. |
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Blood supply |
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- Ulnar artery
- Radial artery
- Anterior interosseus
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Innervation |
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- Anterior interosseus nerve
- Posterior interosseus nerve
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Movements |
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Relations |
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- Anteriorly
- Pronator quadratus
- Flexor tendons
- Posteriorly
Extensor tendons
Anterior interosseus artery
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Clinical anatomy |
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