The treatment of intra articular fractures of distal radius is difRcult and has various problems. Over the past few years, the importance of alignment correction, preservation of normal radial length and reconstruction of congruity of both radiocarpal and radioulna joints have been emphasized.

The end redults of closed reduction and rigid fixation with dynamic external flxator include 13 cases(86.6%) with excellent and good results.

Roentgenograms of 15 of these patient show accurate alignment of the healed fractures. One patient had a poor functional result although roentgenograms demonstrated good alignment of the healed fractures.

The dynamic external fixator is both a useful and convenient method for the reconstruction and treatment of comminuted intraaricular fractures of the distal radius.