It is talked about the classification, the therapy and the late results of the traumatic dislocation of the hip joint with a fracture of the femoral head. Twelve patients with an average age of 36 years (from 18 to 77 years) were treated between the years 1972 and 1982. The rarer anterior dislocation of the hip including a fracture of the femoral head should be specifically classified, in order not to cause any errors for the therapeutic and prognostic assessment following the Pipkin classification. Type I and II with posterior dislocation justify a closed trial of reposition. The miscarried trial, and a continuing fragmental dislocation with a disturbance of the joint's function, or fragments participating in the load area of the femoral head necessitate an open reposition. Small fragments may be taken away, the larger ones require the screwing osteosynthesis. Smaller fragments from the load area must be sustained in an anterior dislocation ("IIb"). The type III injury gives primarily--in exceptional cases sometimes secondarily--an indication for an alloplastic false hip joint. Injuries of type IV should be restored operatively, respectively, it is necessary to perform a secondary operation to set in an endoprosthetic substitute. With the operative therapy--that is: 5 times extirpation of fragments, 4 times screwing osteosynthesis of the femoral head, twice screwing osteosynthesis of the acetabulum--we obtained good results in injuries of type I, II and IV. We performed 3 times a primary total false hip joint in type III injuries.