Figure 1.

Hip X-rays were performed on the 8th week after modeling. (A) In group A, the bilateral femoral heads exhibited cystic degeneration, were irregular, and were mildly collapsed. (B) In group B, the density of the femoral bone was uniformly increased, with visible or sclerotic bone, or ‘crescent signs’. The bone trabeculae was partially disrupted. The bilateral femoral heads had a normal shape without collapse. The joint space was normal. (C) Group C exhibited bilateral femoral heads of a normal shape without collapse. Bone density was uniformly increased, and the joint space was normal.