[[So-called congenital hip dislocation--development of incidence, diagnosis and therapy in the last 7 years].

PROBLEM

How has the Congenital Dislocation of the Hip (CDH) developed in the last 7 years concerning frequency, time of diagnosis and therapy?

METHOD

Retrospective analysis of hospital reports, ultrasound- and X-ray images of children treated with CDH in the University Hospital.

RESULTS

From 1. 1. 1991 to 31. 12. 1997 21 children with 28 dislocated hips were treated. The number of dislocated hips per anno is less than in a former study. In 17 children the diagnosis was found by ultrasound. The diagnosis was made within the first week of life in 8 children. In 9 dislocated hips, open reduction was necessary; in 7 of these 9 joints, diagnosis was made in the first days of life.

CONCLUSIONS

Because of the distinct declination of CDH the "true" congenital dislocations, in which open reductions were often necessary, predominated.