36 巻 (1987-1988) 1 号 p. 203-206
A radiolodical study about the growth of the acetabulum was carried out on 42 children with Perthes' like change of the femoral head after the conservative treatment of CDH. The growth pattern was constructed statistically with the regression curve of α angle (from 1 to 7 years old), Sharp angle (from 7 to 20 years old) and the ratio between the depth and the length of the acetabulum (from 7 to 20 years old). In Perthes' like change group, the growth pattern shows the deterioration o f a angle from 5 to 7 years old and the shallow acetabulum.
The deformity of the femoral head due to Perthes' like change produces a powerful effect on the growth of the acetabulum.