Mingming Lu1, Peng Peng1, Yu Zhang2, and Fei Yuan1
1Affiliated Hospital of Logistics University of Chinese People's Armed Police Forces, Tianjin, China, People's Republic of, 2Philips Healthcare, Beijing, China, People's Republic of
This study aimed to investigate the efficacy of MRI for evaluating morphology and long-term prognosis of acetabulum in pediatric patients with DDH. The bony acetabular index (BAI), cartilaginous acetabular index (CAI), acetabular anteversion index of bone (BAAV) and cartilage (CAAV) were measured and cartilaginous index (CI=(BAI-CAI) / BAI) was computed. There was obvious differences with statistical significance in the CI between non-reduced group and reduced group (t=-2.315, P=0.24), and age was also negatively correlated with the CI (r = -0.345, P =0.01) . The CI can preliminarily predict the long-term prognosis of DDH after reduction.