Forty-five displaced femur fractures in children were treated with unilateral external fixation as a standard treatment from March 2007 to March 2009 and the last follow-up was completed in May 2012. The average age of the children at presentation was 9.93 years. Patients were followed up till union, at 1 year, and at an average of 3.5 years after fixation. The fixator was removed at an average of 12.23 weeks. Twenty-one (47%) patients had a minor complication of pin-site infection. One patient had a major complication of refracture. Treatment of uncomplicated femur fractures using an external fixator in children yields satisfactory results. Our series had a longer duration of follow-up and fewer refractures compared with other series.