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This is a pivot joint that allows you to rotate your forearm and hand up supination or down pronation. Proximally the radius articulates with the ulna along its caudal border which rests within a corresponding concavity in the ulna called the radial notch. Radius Bone Wikipedia The radius bone …

Ulna and the radius are two bones that sit next to each other. They are the radius bone and the ulna bone. Dog Thoracic Limb Its lower end tapers to a point. Radius and ulna anatomy dog . The greater tubercle is not separated into two parts like in other species. The humerus is the long bone of…