It is reported that infected pathological fracture of distal femur has a difficulty in treatment The difficulties lie in; choosing a internal fixator, adequate sequestrectomy of infected lesion, limb shortening, long duration of immobilizatlon.

We uses the external fixator in treatment of distal femoral fracture because it needs less devices in fracture site than the internal fixator, and it could get a rigid fixation. we uses the Ilizarov apparatus. The merits of Ilizarov are, early weight bearing; limb lengthening and easy compression and distraction. The one case in which limb length discrepancy is occured, is peformed by limb lengthening.

In this study, we are going to argue about the two cases, of infected non-unlon of distal femoral fixation comparing with one another.