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RESULTS OF A SELECTIVE ULTRASOUND SCREENING PROGRAMME FOR NEONATAL HIP INSTABILITY



Abstract

Introduction: Ideally any screening system should use a simple reliable test with good intraobserver reproducibility. This is important in DDH as once there is an established abnormality surgical intervention is frequently required. The aim of early detection (within six weeks) is to increase the number of children that may be treated nonoperatively. We have evaluated the effectiveness of our selective screening program by determining the late presentation rate of DDH in our region.

Methods: Between January 2001 and December 2003 we looked retrospectively at all patients presenting with DDH in our region. We recorded their age at scan and presentation, the Graf classification if recorded, their management, the presence of risk factors for DDH, referral source and presence of a positive clinical examination. All these were entered into a database and analyzed specifically with regard to patients presenting late.

Results: In the period between January 2001 and June 2002 prior to selective ultrasound screening (Group 1) there were 9441 live births and 26 cases of DDH (incidence of 2.75). There were 11 late presenters with an incidence of 1.12 per 1000 per year. Between July 2002 and December 2003 (Group 2) there were 9428 live births and 20 cases of DDH (incidence of 2.12). There were 3 late presenters with an incidence of 0.3 per 1000 per year.

Discussion: We have shown that a program of selective ultrasound screening in our region has decreased the number of children presenting late with DDH. It must be remembered however, that in the absence of any risk factors, clinical examination remains critical in identifying those with DDH in a selective screening program.

For information please contact BSCOS at the Royal College of Surgeons, 35 – 43 Lincoln’s Inn Fields, London WC2A 3PN