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Anatomy of the distal forearm

Principle of columns

The distal forearm may be thought of in terms of three columns. The ulna forms one column. The radius may be thought of as an intermediate and a radial column.

Distally at the wrist joint, the radial column articulates with the scaphoid and the intermediate column articulates with the lunate.

The ulnar column terminates distally at the TFCC.