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为探讨超氧化物歧化酶（SOD）对实验性骨折愈合的影响，给实验性骨折大鼠静脉注射SOD，透射电镜观察实验性骨痂组织、细胞的超微结构改变，并用微机图像处理系统对骨痂骨系细胞进行立体定量分析。结果显示：SOD可使①早期骨痂内毛细血管含量增加；②骨生成细胞增殖并向成骨细胞转化，成骨细胞数量增加，体积较大；③成骨细胞、成纤维细胞和破骨细胞功能活跃，骨痂的骨化、改建以及塑建速率加快。结论：SOD可作为促进骨折愈合的辅助药物。
To investigate the effect of superoxide dismutase (SOD) on experimental fracture healing, SOD was injected intravenously into experimental fracture rats, ultrastructural changes of experimental callus tissue and cells were observed by transmission electron microscopy. With computerized image processing system Callus bone cells for stereological quantitative analysis. The results showed that: SOD could increase the content of capillaries in the early callus; ② proliferation and osteoblast transformation of osteogenic cells, the number of osteoblasts increased, the volume larger; ③ osteoblasts, fibroblasts and osteoclasts Active, callus ossification, alteration and plastic construction speed. Conclusion: SOD can be used as auxiliary drug to promote fracture healing.