Objective To evaluate the curative effect of congenital dislocation of the hip (CDH) with displasia of acetabulum (DA). Methods During 1970 to 1990

469 children with CDH were treated by close reduction in our hospital

as a result

421 children’s reduction were successful at that time. However

33 children were proved to be DA after average nine-year follow-up (range 1-15 years). Results All the 33 children were treated by remedial operation in time

and the results were satisfactory. Conclusion The children with CDH should be followed up after successful reduction to skeleton maturity at least. Once DA were found

Steps should be taken in time to rectify it.