An example of a fragmentary partial articular of the radial dorsal rim or Barton fracture. 

Dorsal double plate fixation is seen in cases of comminuted dorsal articular fractures with involvement of the distal radioulnar joint or displaced dorsoulnar fragments. They are also used in complete articular multifragmentary fractures. 

They permit reduction and stabilization of the dorsal ulnar fragment and restore distal radioulnar joint anatomy.