Infected tibial nonunions, with bone loss and extensive soft tissue damage, often require long multistage treatment. Epidermo-fascial osteoplasty according to Umiarov allows the removal of important bone loss without previous sterilization of purulent foci or coverage of the soft tissues. The results obtained in 5 cases treated by Umiarov technique are very satisfactory and allow to consider this method as a valid alternative to the traditional treatments.