With the goal of improvement of intramedullary osteosynthesis efficiency in treatment of composite and associated fractures of long bones by way of improvement of fixatives according to their electrical properties and optimization of reparative electrogenesis conditions in 72 experiments with animals the effect of electro-conductive properties and electrostatic field of intra-bone implanted rods on the osteo-reparation following transverse osteotomy has been studied, the method has been elaborated and on the basis of dynamic analysis of 147 clinical observations has been given comparative evaluation of the results of polytetrafluorethylene intramedullary osteosynthesis. The advantages ethylene-based electrets application in case of intramedullary osteosynthesis. The advantages of electret application for activation of osteo-reparation, improvement of the results of treatment and reduction of terms of rehabilitation of victims with critical traumata have been demonstrated.