Objective:To summarize the experience of Ilizarov technology pressure extending method applicated in infected nonunion.Methods:Application of Ilizarov pressure extending method in treatment of 20 cases with long bone nonunion defect,penetration bone round needle in the end of fracture,penetrated circular needle saws vertically at the osteotomy and bone,installed dual external distraction device.From the seventh day after operation,osteotomy began to prolonge with a rate of 1.0 mm every day until reach the l...