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[Treatment of unstable dislocated hip in infancy and early childhood using the modified Fettweis method].

We report on our experiences with the application of cast immobilisation in the human position according to Fettweis in order to treat unstable luxations of the hip joint of infants. Stability of the joint was achieved and marked degrees of acetabular dysplasia were brought to cure in about 80% of the cases. However, based on this analysis, remaining instability or lasting dysplasia of the hip joint have to be anticipated in about 10% of the cases. The use of sonography in diagnostics let expect more progress in therapy for the future.