UNITED KINGDOM EXPERIENCE OF THE UNIVERSAL SCREENING PROGRAMME FOR DEVELOPMENTAL DYSPLASIA OF THE HIP IN NEONATE

Abstract

Universal neonatal screening of developmental dysplasia of the hip (DDH) remains controversial and a few centres have adapted this practice in the United Kingdom. Our institute has established a DDH screening programme for many years. The following shows our result after a recent hospital relocation and changes to the screening programme.

All infants born in Coventry are screened for DDH by a clinical examination and ultrasound scan (USS). 5,084 babies were born over a 12-months period. Normal examination and USS were detected in over 90% of the cases. Abnormality detected through either clinical examination or USS was referred to a special orthopaedic/USS clinic. However, in the majority of the cases, subsequent assessments were normal and only 23 babies required treatments. In these cases, the majority had not shown any signs of clinical abnormality. However, serial USS had shown persistent abnormality of at least Graf grade II or higher. The average time from birth to a treatment with a Pavlik Harness was 35 days and the average duration of a treatment was 48 days. Those with Graf III or higher at initial presentation, but spontaneous reduced without treatment were follow-up to one year. The acetabular index in these cases was normal. Apart from one case, all the babies were treated successfully. The unsuccessful cases had a Graf grade IV at the presentation and had shown no sign of improvement on sequential USS.

While the sensitivity of detecting DDH through clinical examination remains poor, USS has become an essential tool in our screening programme. Many initial abnormalities are secondary to hip immaturity and they tend to resolve. Those with clinical instability and persistent USS Graf grade II or higher should be treated with early Pavlik Harness. Early detection has led to better results than late diagnosis, and in addition to this, the overall number of operations required could be reduced.