FALSE-POSITIVE SONOGRAPHIC HIP EXAMINATIONS IN NEWBORNS WITH CONGENITAL VARUS DEFORMITY OF THE PROXIMAL FEMUR

In cases of congenital varus deformity of the proximal femur, the scre ening of hip dysplasia can lead to misinterpretations. The false-posit ive ultrasound result is caused by the superiorly displaced greater tr ochanter in hips with coxa vara, which narrows the scan window. In thi s paper three typical patients are presented to demonstrate that the u se of additional non-standard views cannot exclude hip dysplasia in al l cases. Hence, such patients with femoral abnormalities and doubtful sonographic findings should be further evaluated by arthrography or ma gnetic resonance imaging to rule out additional hip dysplasia.