[History and present indications for corrective surgery of the acetabulum in hip dysplasia (author's transl)]

F. König published the first shelf-operation above the dislocated femoral head, which could improve the function in 1891. In Europe only after 1920 the techniques of Spitzy and Lance grew popular and are still frequently performed with their different variations. Pelvic osteotomy with medialisation was published 25 years ago for special indications, some years later Salter's Innominate Osteotomy got very well known. Describing the history of these operations the actual indication for the different methods is analised.