Fig. 3

Preoperative planning process for corrective osteotomy for distal radius malunion: Step 2. a Red: affected side, white: unaffected side. The degree of affected-side articular surface deformity can be evaluated by aligning the two images at a deformity-free area. b For correction of angular deformity, an image to set a plate along the articular surface in advance is prepared. Orange lines show the correction angles. c Set the osteotomy line at a position that does not interfere with the plate screw insertion position