The authors present a case of closed comminuted supracondylar fracture of right femur complicated with cellulitis in the pre-operative period which was successfully treated with cross knee Ilizarov external fixator. The main principle of the surgery is to achieve proper alignment of the lower limb. The presence of cellulitis and possibility of deep seated infection in this case presents a unique clinical dilemma of management which could produce the most optimal outcome. This fixation technique with early removal of tibia fixation which enables early mobilization of the knee has resulted in excellent bone union and good knee joint range of motion.