Abstract The versatile Orthofix ® modular system can be used to treat long-bone fractures in children from the 2nd year of life. It allows definitive fracture management over a short period of time without traumatizing the soft tissues. The possible early mobilization and full weight-bearing mean that the children are able to return early to school or kindergarten. The method enables the stabilization of open fractures with or without excessive soft tissue injury as well as secondary callus distraction. There is no need for a second surgical intervention and no prolonged period of physiotherapy. This fracture treatment suits children's needs and maintains their quality of life.