The forearm is part of the upper limb below the (upper) arm and above the hand and wrist, comprising the radius and ulna bones. In the supinated anatomical position, the radius is lateral and the ulna is medial.
The elbow joint is superior and the wrist joint inferior. Forearm flexion and extension occur at the elbow and pronation and supination occur between the proximal and distal radioulnar joints.
See forearm series for radiographic positioning.
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