Cheon JE, Kim JY, Choi YH, et al. - This study was carried out to distinguish imaging risk factors on contrast-enhanced hip MRI after closed reduction of developmental dysplasia of the hip (DDH) that could predict future development of avascular necrosis (AVN) of the femoral head. Researchers included 58 infants (F: M = 53: 5, aged 3–18 months) who had undergone immediate postoperative contrast-enhanced hip MRI after closed reduction of DDH were included in this study. They assessed interobserver agreement of contrast enhancement pattern on MRI by two radiologists. They ascertained the development of AVN through radiographic findings at one year after reduction. After closed reduction of DDH, contrast-enhanced hip MRI provides an accurate anatomical assessment of the hip. After closed reduction of DDH, global decreased enhancement of the femoral head could be applied as a good predictor for future development of AVN.