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1Preliminary remarks

Multifragmentary fractures of the distal ulna usually occur in combination with distal radial fractures.

In multifragmentary ulnar fractures, there is instability and shortening, so the distal ulnar hook plate may be useful to hold distal multifragmentary fractures.

Attention should be paid to restoring correct rotation and correct length in relation to the radius.

Complete dislocation of the radiocarpal joint is often associated with disruption of the distal radioulnar joint (DRUJ).