CONGENITAL DISLOCATION OF THE HIP

The Development of a Regional Service

¹ Royal Aberdeen Children's Hospital, Aberdeen, Scotland

1. A scheme was started in 1960 with the object of ensuring that the hips of all babies born in the North-Eastern Region of Scotland were examined shortly after birth.

2. 1,671 children with suspected abnormalities have been seen during the ensuing ten years, and the findings are discussed.

3. Clinical examination is essential. Radiographic examination of the newborn is not necessary and may be misleading, but it does prove that some hips with limited abduction but no instability are in fact dislocated.

4. Treatment is not started when the diagnosis is made shortly after birth. The children are re-examined at three weeks, when spontaneous recovery has occurred in about half. The others, whether they show instability or only limitation of abduction of the hips, are treated in a simple splint until they are three months old. Any residual stiffness is an indication for further splintage.

5. The first radiographs are taken when the children are three months old, and no child is discharged until the radiographs show that the upper femoral epiphyses have appeared and are in normal position.

6. We appreciate that we are treating some children who would have recovered spontaneously, but we do not know how to distinguish them. There is no evidence that splintage harms a hip.

7. Eighty-six children (5 per cent of the total) needed operation usually because the diagnosis was missed at birth.

8. Children with familial joint laxity or genu recurvatum should be examined especially carefully for associated hip abnormality.

9. The incidence of abnormality of the hips at birth is about one in fifty live births.