IS UNSTANDARDIZED HIP SONOGRAM A RISK FACTOR FOR LATE APPLIED DEVELOPMENTAL DYSPLASIA OF HIP ?

OBJECTIVE: Treatment of Developmental Dysplasia of Hip (DDH) in early period is easier and less invasive than the treatment in late period. For diagnosing of developmental hip dyasplasia, ultrasonography before femoral head ossification is critical. Ultrasonography (USG) should be in accordance with predetermined standards. In this study, we aimed to determine the relationship between unstandardized USG measurements and the incidence of late presenting DDH.MATERIAL AND METHODS: We investigated children (aged 0-1) with hip sonograms and pelvis X-rays recorded in the hospital database. One hundred and thirty children were included in this study (260 hips), 82 (63.1%) were female and 48 (36.9%) were male. We divided hip ultrasonography images into two groups according to their compliance with the criteria defined by Dr. Graf. The ultrasonography images that met the criteria formed the Graf group (GG) and those that did not formed the Control group (CG). The angles specified by the radiologists in their reports were taken into consideration. Diagnoses obtained by ultrasonography were compared with those obtained by pelvis X-ray image.RESULTS: When unstandardized ultrasonographies were examined, it was found that plane error in 47 (35.2%) hips, incorrect detection of anatomical markers in 34 (25.3%) hips, and both errors were performed together in 53 (39.5%) patients. In the diagnosis of developmental hip dysplasia, the sensitivity and specificity of the GG group are higher than the CG group.CONCLUSIONS: According the result of this study, standard hip ultrasonographies are necessary to diminish the prevalence of late presenting DDH.