Methods Twelve goats were used to make bone lengthening model in the upper metaphysis of tibia,and then divided into control group and ZGY treated group to examine bone growth in the distracted area.

• 方法山羊12只，于胫骨上干骺端做成骨延长模型，分成对照组和中药治疗组，进行实验，观察延长区成骨情况。