“…The conventional approach for acute correction of post-traumatic malunion deformities in children is represented by a corrective osteotomy at the deformity site (mainly closing-wedge osteotomy, opening-wedge osteotomy, or oblique osteotomy) planned on plain radiographs, with or without an additional osteotomy of the other bone, to achieve acceptable ulnar variance and satisfactory prono-supination [ 1 , 2 , 15 , 16 , 17 , 18 , 19 , 20 ]. Since the spread of computer-aided planning and the introduction of PSIs in the last two decades, many different options have become viable to improve surgical accuracy and final outcome [ 1 , 4 , 21 , 22 , 23 , 24 , 25 ].…”