[Extensive reconstruction of the acetabular dome after redisplacement of an acetabular fracture. Case report].

Anatomical reconstruction and stable internal fixation is the treatment of choice in displaced acetabular fractures. Marginal impaction zones are of negative prognostic value. They are normally treated with a cancellous bone graft from the greater trochanter. In the presented case, a secondarily failed acetabular reconstruction with redisplacement of the acetabular dome was treated with several corticocancellous blocks filled in the dome defect. In this case, a comminuted area and secondary displacement could be successfully treated with anatomical reconstruction. This resulted in joint congruency and an acceptable long-term result after 16 years.