General observation and bone mineral density (BMD) measurement were performed, and the repairing ability in bone defects was compared each time point at weeks 8, 12, 16 and 24 (5 rats in both groups, respectively).

• 在8,12,16和24周各时间点(实验组和对照组各取5只)分别行标本的大体观察和骨密度测试,比较其修复骨缺损的能力。