Aim of the study: In our work we firstly investigated severe, neglected cases of dysplastic coxarthroses, secondly trying to elucidate the best type of implant and operative procedure for severe, neglected cases and find out the outcome of these operations.

Material and methods: In the period 1987–2001 we operated more than 700 patients with dysplastic coxarthroses, in whom we implanted total hip prostheses (THP’s). The percentage of dysplastic coxarthroses among our hipoperated patients oscillated in the mentioned period between 40–50%, the average age of the mostly female patients was 38,8-42 years. In these mostly young patients we implanted following types of uncemented THP’s; in the order of most operations: Zweymuller’s cementless THP’s, Aldinger’s individual, custom made cementless THP’s, the Harris-Galante cup and Geradschaft femoral stem, mostly uncemented, the C-Fit THP, rarely other types (f.i. Charnley’s cemented THP’s).

Results: According to evaluation of Merle d’Aubigne and Postel we achieved best results with Aldinger’s custom made THP’s – nearly 88% very good and good results.

Conclusion: The best long-term results in THP’s for dysplastic coxarthroses were achieved by Aldinger’s THP’s, followed by Zweymuller’s cementless THP’s, which we consider as methods of choice in the mentioned cases.