[Acetabular Replacements in THR in Dysplastic Osteoarthritis of the Hip.].

The authors present different options of the surgical treatment of dysplastic osteoarthritis of the hip. For the acetabular replacement they use Harris-Galante, Zweymúller and Balgrist cementless cups. They evaluate results for a five-year postoperative period in 182 patients. On the basis of Merle d'Aubigne and Postel evaluation system the results were excellent in 79,6 % and very good in 12,1 %.The authors recorded only a relatively small percentage of complications (10,9 %) relating to the wound infect, loosening of the cup, trombophlebitis and palsy of n. peronaeus com. or n. femoralis. The authors emphasise the importance of CT examination of the hip joint in the preoperative preparation and of the knowlege of biomechanics of pelvis for the insertion of the cementless cup. The replacement of acetabulum in dysplastic osteoasthritis of the hip is an open issue - there exists no ideal cup for each case. Key words: dysplastic osteoarthritis of the hip, cementless cup, THR, acetabuloplasty.