Follow-up study was carried out in 35 cases of C. D. H., which were treated by closed reduction from 1956 to 1961 in our clinic and was done an interim follow-up report clinically and roentgenographically in 1962.
The purpose of this study is to investigate the late results and to predict how these cases would be changed within about 14 years.
The results are that the hip joints from the complete dislocation developed much more deformity than these from sub-luxation or acetabulum displasisia, and the hip joints from the younger suckling (1 to 6 month) developed much less deformity than these from the older suckling (7 to 12 month).
The late roentgenographical results of the hip joint have been more influenced upon the changes in the head and neck of the femur than the CE angle or acetabulum angle at the child age.
