From 657 children who suffered from fractures of the femoral shaft during the years 1965-1980 504 could be followed-up in 13 hospitals of the GDR clinically and roentgenologically. 313 had undergone conservative treatment, 191 surgery with different methods. In all surgically treated cases there was overgrowth of the broken femoral shaft there was a shortening only in a few cases. In most cases the rotational deformity of the distal fragment persisted. Dislocation ad latus always had disappeared, whereas varus and expecially valgus deformities as well as antecurvation had improved partially. Coxa valga deformity was found most frequently after internal fixation.