抄録
1. A review was made of twenty nine cases of congenital dislocation of hip in patients treated by Colonna's arthroplasty. One of these patients was bilateral. Ages at the surgery ranged from four yearr to fourteen years.
2. The clinical results are superior to that of the roentgenogram.
3. The clinical results were favorable —twenty-seven hips were excellent or good and three hips were fair or poor.
4. In twelve hips, roentgenograms were shown deformities of femoral head or acetabular dysplasias. The roentgenographic results of eighteen hips were excellent or good.
5. Causes of these are due to the following factors: (1) lack of traction before surgery, (2) technique of surgeon, (3) lateralization of femoral head after surgery, (4) structural problem of femoral head itsself.
