Femur fractures are one of the rarest fractures in children. The femur is constantly exposed to various external forces but it rarely fractures because of its structure. The aim of this research was to determine the methods of femoral fracturetreatment, but also how some factors such as age, cause of fracture, complexness etc. influence the choice of the treatment method. The research included 106 children up to 18 years of age treated at the University Hospital Center of Medicine Zagreb and the Clinic for children diseases Zagreb for femur fractures. The data was obtained with a retrospective study in the period from 2008. to 2016. for the University Hospital Center of Medicine Zagreb, and the period from 2014. to 2015. for the Clinic for children diseases Zagreb. The cause of the fracture and the diagnosis were coded with the help of the MKB-10 classification. It was shown that operative treatment is more common than conservative treatment with 55 % of cases treated with operative methods, as opposed to the findings of other researches on this matter, where conservative methods are leading. The age group with the highest incidence of femur fractures is the one aged from 0 to 4 years that accounts 49 % of all fractures. Those fractures mostly occur due to falls and are the only ones that are more commonly treated with conservative methods. All other age groups are mostly treated with operative methods. The only used conservative method was spica immobilization, and the most used operative method was flexible intramedullary nailing with TEN. The treatment depended on age, complexness of the fracture, was the fracture open or closed, displacement, completeness of the fracture and associated injuries. The cause was also an important factor for determining the treatment. Conservative treatment was mostly used for fractures caused by falls in 62 % cases of all falls, and operative treatment was mostly used for fractures caused by traffic accidents in 79 % cases of all traffic accidents.