[Congenital femur abnormalities]

Congenital malformations of the femur are rare. It is possible to determine a hypoplastic and a dysplastic group on clinical and radiological criteria. In hypoplasia the therapeutic goal is to achieve limb-length-equalisation, whereas in dysplasia a prosthesis is always needed and the treatment is to gain optimal function. An outline is given of the malformations and of their treatment.