[Early complication of the hip joint surface replacement according to Wagner (author's transl)].

Apart from infection and loosening of the implants, spontaneous fracture of the femoral neck is a specific early complication of the hip joint surface replacement according to Wagner. Based on our case material we demonstrate the problems involved, investigating not only the deficient operation technique but also the reasons for its deficiency which, in our opinion, are to be found in the method itself.