Fig. (2) Multi-apical planning has been performed due to the varus alignment of the bone, which is caused by both the proximal tibia (reduced mMPTA) and the distal tibia (increased mLDTA), a multi-apical planning for correction of the deformity is considered. The bilevel osteotomies are performed on the intersection between the proximal and distal mechanical axis lines, respectively, and a third line drawn as representative as possible of the mid-diaphysis.