[Radiological study of the development of the hip joint in children with congenital hip dislocation treated by the Frejka cushion].

The changes in the radiological state of the hip joints between the 2-nd and the 21-st year of age in persons treated for congenital dysplasia of the hip with dislocation have been determined on the basis of the analysis of 3.005 X-razy pictures of 4 or 6 radiological parameters of 916 hip joints in 708 children and the total point evaluation. On comparing the rate of excellent, good and poor results in individual years of life, it has been concluded that marked and quick rebuilding occurs between the 2-nd and the 7-th year of age, and on the other hand, after 10 years of age the radiological state of the hip joint stabilizes.