Fig. 3

a Schema of percutaneous drilling using Kirschner steel wire and resection of fibular neck of a width of 7 mm. b A bone chisel (black solid line) was applied over a 1-cm incision made along the curve to cut the medial and lateral cortex of the tibia. c A completion of dome shaped osteotomy was confirmed by a fluoroscopy according to apply the varus and valgus stress of the knee