Fig. 1

The surgical procedure of triplanar osteotomy and transverse distraction. A A triplanar osteotomy (6.5 cm in height with a width of 1.5 cm) was created on the medial cortex of the proximal tibia along the 3 sides (proximal, distal, and lateral) of the rectangle; the medial margin of the tibia was used as the medial side of the rectangle. B–D 2 curved skin incisions were made. The external fixator was assembled after triplanar osteotomy and insertion of half pins