Eficacia del ultrasonido en relación con la radiología convencional en el diagnóstico de la displasia del desarrollo de la cadera en niños menores de 6 meses de edad. Hospital Vicente corral Moscoso. Cuenca 2016

Introduction: Dysplasia in children's hip involves abnormalities in the development of the hip joint. In Chile, newborns with developmental dysplasia of the hip range from 2 to 3%. Early diagnosis is critical to provide a favorable prognosis. Objective: to establish the effectiveness of ultrasonography in relation to traditional radiography in the diagnosis of hip dysplasia in children from birth through 6 months of age. Hospital Vicente Corral Moscoso. Cuenca 2016. Methods: Confirming research of the diagnosis test, the sample group was taken from 121 patients under 6 months worked out on the basis of: sensitivity 97%, specificity 96.7%, ratio of sick and not sick of 1: 1, confidence level 95 %, complete accuracy 5%. At the Imaging service, children had an ultrasound, performed with Graf technique and anteroposterior hip radiography as "gold standard", prior parental approval through informed agreement. Data was processed in SPSS software prevailing sensitivity, specificity, positive and negative predictive value, positive and negative likelihood ratio. Results: 23% of patients tested positive for dysplasia on ultrasound, sensitivity 22.9%, specificity 100%, PPV 100%, NPV 56%, negative likelihood ratio 0.77. Conclusions: Ultrasonography does not prove to be more effective than conventional radiography on the diagnosis of Developmental dysplasia of the hip (DDH), it should not be used as a universal screening method, a pathological ultrasonographic finding delimits a high possibility of Developmental dysplasia of the hip