[Dislocation of an endoprosthesis of the hip joint operated by the open method.]

The authors evaluated in a series of endoprostheses of the hip joint the X-ray documentation and peroperative revision findings in 8 patients who from a total of 16 dislocations (2.2%) were subjected to surgical revision. Conditions of a postdysplastic hip joint with previous surgery predominated (62%). In half the reoperated hip joints the cause of dislocation was a malposition of one of the components. The most frequent surgical revision was replacement by a femoral component with a longer neck (88%). Key words: endoprosthesis of the hip joint, dislocation, treatment of dislocation.