Radius

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Definition

The radius is a part of the skeleton of the forearm. It is an elongated bone. The radius stems from the exterior of the elbow and runs along the arm to where the thumb joins the wrist. The radius is shorter than the ulna, the other bone of the forearm. It is joined on one side to the scaphoid and lunate, and on the other side to the ulna. This bone is triangular in shape, with three sides and three edges. It is close to the radial artery, interosseous membrane, and radial nerve.

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