1. 538 joints of congenital dislocation of the hip were treated with Riemenbügel (Pavlik splint) between 1967 and 1971 in our clinic. Out of this sereis, 270 joints (123 dilocation, 147 dysplasia) were clinically and radiographically evaluated. Follow-up study covers average of 3 years and 11 months.
2. Of the 123 joints of dislocation, we obtained 78% (96 joints) excellent and good result, of the 147 joints of dysplasia, we obtained 95% (139-joints) excellent, good result.
3. We obtained 61 joints (49 dislocation, 12 displasia) of lateralization of femoral head after the treatment of congenital hip dislocation. Most of this lateralisation occured within 3-months after removal of Riemenbügel, and improved spontaneously within 5-6 months after occurence. In the case of clinical and experimental study, we suggest that major fatter of lateralization of congenital hip dislocation is contracture of the iliopsoas muscle which was forcefelly extended.
