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Background: Screening modalities in early detection of DDH remain controversial worldwide despite of universal accessibility to ultrasound and despite of encouraging preliminary results reported about the Austrian and German general ultrasound screening programs. The goal of our investigations was to provide a long time survey on effects following the introduction of the ultrasound exam in prevention of DDH and to proof its beneficial medical and economic effects as well as to analyze possible adverse effects, when utilized by a general screening.

Method: Nationwide data about ultrasound screening exams, sonographic follow up exams, frequencies of functional abductive treatment measures as well as hospitalizations due to DDH were requested by different Austrian health care providers. Through a representative recall over a time frame ranging partially back to 1980 a surveillance analysis is provided. The medical effectiveness of the screening was mainly assessed by the annual appearance of early late cases, representing open reductions (O.R.) upon the first two years of life. Other variables as the disease related incidence of age matched annual hospitalizations and the disease prevalence measured by non age matched hospitalizations in relation to the year specific population were analyzed. A cost benefit analysis was performed by comparing the treatment and diagnostic costs in the year before program start (1991) to the last year of surveillance (2004).

Results: Since 1980 the functional treatment rate has continuously been reduced from approximately 12 percent to 3.23 percent in 2004. Early late cases (O.R.) due to DDH have been also diminished to an international competitive rate of 0.13 per 1000 newborns, while other age specific early surgical interventions could be almost eradicated. Current additional investments of the program figure only 16.94 € per newborn and embody approximately 1370 € per detection of one affected newborn. Control exams are contributing to roughly 25% of the calculated costs.

Interpretation: By founding a nationwide program Austria has introduced a medically efficient screening modality to reduce early late cases and to limit treatment of DDH exposed children to less invasive measures by early diagnosis. In contrary to suspicions of possible adverse effects of such screening, overtreatment has been abandoned while the functional treatment rate has sunken to an acceptable level. Costs saving effects have been already realized on the treatment side. Further savings shall be realized by limiting an unacceptable rate of control exams.