Abstract
A follow-up study of 184 cases of congenital dislocation of the hip in infancy treated by three different methods, i. e., 44 cases by the Lorenz method; 67 cases by the method of the abducter splint; 73 cases by the Pavlik method was reported. As the result of this study the following conclusions were reached: 1. Pavlik's functional treatment is excellent compared with another treatments. 2. The hip treated well by the Pavlik splint has not only been led to spontaneous reduction but stimulated to develop the joint normally. 3. The incidence of avascular necrosis was highest in 3 month-old-infant treated by the abducter splint, while it does not occur in the same aged infant in the Pavlik splint. 4. It is reasonable to presume that the immobilization and the tight abducter muscles in full abduction cause avascular necrosis. 5. The Pavlik splint should be applied rightly and loosely, then avascular necrosis following reduction of congenital dislocation of the hip will not occur.
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