To analyze outcomes of treatment and complications in children treated with elastic stable intramedullary nailing (ESIN) due to femoral fracture. From May 2002 until May 2018 case records of 103 patients (76 male and 27 female), with median age of 9 (range, 3-17) and follow-up of 92 months, who underwent ESIN because of displaced femoral fracture were retrospectively reviewed. The patient's information including age, sex, side involved, trauma mechanism, type of fracture, associated injuries, neurovascular status, complications, operation time, duration of hospital stay, time to implant removal were analyzed. The surgical procedure implied a reposition of bone fragments and osteosynthesis with titanium elastic nails introduced through an incision over the lateral and medial border of the distal femoral metaphysis. All patients achieved complete radiographic healing at a mean of 8.5 (range, 5-15) weeks. Nine (8.49%) postoperative complications were recorded: three entry site skin irritation, two cases of valgus angulation and one case of nail protrusion, re-fracture, Varus angulation and delayed union. All complications, except case of re-fracture and one valgus angulation, were treated conservatively, with no long term consequences for the patients. Two patients were re-operated. After removal of nails all patients recovered complete function of the extremity, without long term consequences. The ESIN for treatment of femoral fractures shows very good functional and cosmetic results. It allows an early functional and cast-free follow-up with a quick pain reduction. Because of the excellent objective and subjective results, the operative stabilization of femoral fractures with ESIN should be recommended to all pediatrics patients.