After 3 months, about the repair tissue, the edge was clear, and the surface was pale and uneven, cartilage cell lacuna was visible.

• 术后3月修复组织境界仍清楚，灰白色，表面不整，软骨细胞陷窝明显，阳性染色细胞巢（II型胶原）增多，S-100蛋白未见表达。