Method: Animal model of partial patellectomy in 16 mature female New Zealand White rabbits (18-week-old) were established and randomly classified into 2 groups.

• 方法:建立兔髌骨部分切除模型,16只成年雌性新西兰白兔随机分为2组,超声组每日接受低强度超声刺激,对照组给予假刺激。术后6、12周处死动物取标本(n=4)做大体和病理组织学观察。