We evaluated the effectiveness of magnetic resonance imaging in 7 cases with Legg-Calvé-Perthes disease by comparing the MRI findings with radiograms taken within 6 months. It was not easy to predict the extent of necrosis of the femoral head by evaluating the initial magnetic resonance imaging. However, we found that it was possible to know the reparative stage earlier by using MRI compared to radiograms.
