[Predetermination of arthrosis, pain and limitation of movement in congenital hip dysplasia (author's transl)].

The purpose of this investigation was to find out, whether the onset of pain, arthrosis and decrease in mobility in different degrees of joint deformation is predictable for the indication of corrective surgery. When the correlation between of the onset of pain and arthrosis on one side and different measurements of joint deformation was tested, it turned out, that there is a significant correlation. If different age groups are built, however, we observe, that this correlation is given mainly in the youngest age group, where the most extreme dysplasias are found. In slight and moderately severe dysplasias the onset of pain can be found in all age groups. Arthrosis is following pain several years later. For this reason corrective surgery in slight and moderately severe dysplasias cna be postponed until the onset of pain. Borderline values, above or below of which the onset of pain is to be expected until the age of about 35 years, are given in tab. 5.1. In these cases early surgery seems indicated.