The most common complication of distal radius fractures after improper treatment is malunion. In the distal radius, malunion, which may concern more than one plane (sagittal, coronal, axial), badly affect the function of the distal radioulnar joint. Understanding the mechanisms that disrupt the function of the distal radioulnar joint is important in terms of achieving better functional results and treatment. In this article, it is aimed to draw attention to the destructive effects of malunion complication on distal radioulnar joint, indications and methods of treatment that we often encounter after the treatment of distal radius fractures. Not only radiological criteria, but also patient`s age, activity status and functional needs, and general medical condition should be taken into account in the decision on corrective osteotomy, which is recommended to be performed early.