Neonatal hip instability: screening with anterior-dynamic ultrasound method.
The anterior-dynamic ultrasound method was used for screening 4,430 children for hip dislocation. The frequency of treatment for unstable hip joints was reduced to 0.18%, having been 1.7% without ultrasound screening. No cases of late-diagnosed dislocation were registered. The sensitivity of the pediatricians' clinical examination screening was low, only 24%. After intensive training over several years and improved clinical examination methods, our five technicians managed to increase the sensitivity to 53%. With clinical examination methods, cases of totally dislocated hips can be difficult to diagnose, and only two of four such hips were clinically diagnosed; the proportion of false-positive cases, 0.7%, was also considerable. The anterior-dynamic ultrasound method could optimize the screening results of many clinics.
Andersson
J E
JE
Department of Clinical Physiology, County Hospital of Norra Alvsborg, Trollhättan.
Funnemark
P O
PO
D003951:Diagnostic Errors; D006618:Hip Dislocation, Congenital / Q000000981:diagnostic imaging*; D006801:Humans; D007231:Infant, Newborn; D007593:Joint Instability / Q000000981:diagnostic imaging; D012680:Sensitivity and Specificity; D014463:Ultrasonography