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Principles of screening and congenital dislocation of the hip
1Department of Children's Orthopaedic Surgery, School of Postgraduate Medical and Health Care Studies, Morriston Hospital, Swansea.
Insights
Screening for congenital dislocation of the hip (CDH) has largely failed nationally despite decades of effort. Selective ultrasound screening shows promise, but rigorous trials are needed before widespread adoption.
Area of Science:
- Orthopedic Surgery
- Pediatric Health
- Diagnostic Imaging
Background:
- The increasing prevalence of surgical diseases necessitates careful evaluation of screening programs.
- Congenital dislocation of the hip (CDH) screening offers a 30-year case study on the efficacy and challenges of population-wide screening.
- Despite specialized successes, national CDH screening has faced significant failures.
Purpose of the Study:
- To analyze the reasons behind the limited success of national congenital dislocation of the hip (CDH) screening programs.
- To evaluate the effectiveness of selective ultrasound screening for CDH.
- To present preliminary findings on potential collagen abnormalities in CDH.
Main Methods:
- Review of 30 years of screening data for congenital dislocation of the hip (CDH).
- Analysis of screening principles and their application to CDH.
- Description of studies on neonatal hip anatomy and screening experiments.
- Evaluation of initial results from a selective ultrasound screening method for CDH.
Main Results:
- National screening for congenital dislocation of the hip (CDH) has been largely unsuccessful, despite good outcomes in specialized centers.
- Selective ultrasound screening for CDH has yielded encouraging initial results.
- Preliminary evidence suggests a possible collagen abnormality associated with CDH.
Conclusions:
- The overall national screening for congenital dislocation of the hip (CDH) has not met expectations.
- Selective ultrasound screening presents a potentially more effective approach for CDH detection.
- Randomized controlled trials are crucial before implementing any new national screening programs.
Abstract:
The call for screening for an increasing number of surgical diseases is becoming louder and more frequent. There is a general perception that screening is 'good' but it is important to consider the evidence carefully. There is one surgical disease that provides considerable experience of the process of screening over a period of 30 years and this is congenital dislocation of the hip (CDH). In retrospect, it is clear that screening for this disease has not been a total success. Although some specialised centres have achieved excellent results, in the country as a whole screening has been a failure. The reasons for this are analysed and emphasis is placed on the principles of screening which are briefly summarised. The results of various studies on screening and experiments on the basic functional anatomy of the neonatal hip are described. The initial results of our method of selective ultrasound screening appear to be encouraging and some evidence of a possible collagen abnormality in CDH is presented. As a general principle, however, it is suggested that strict randomised controlled trials should take place before national screening programmes are started.