Ulnar Notch Anatomy in 3D | Rolandic Anatomy

A notch on the radius for the ulna. This joint (the DRUJ) is what lets you "Turn your palm up"; a "Galeazzi Fracture" is a broken radius plus a dislocation of this ulnar notch.

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Related structures

Radius Abductor Pollicis Longus (Radius Origin) Anterior Border of Radius Anterior Surface of Radius Articular Circumference of Head of Radius Articular Facet of Head of Radius Biceps Brachii Muscle (Radius Insertion) Body of Radius