Methods The right hind limb of twenty-four adult New Zealand White rabbits was immobilized by plaster cast in extension position for 10, 20, 30 and 40 days.

• 方法 采用成年雄性新西兰大白兔30只，随机分五组，每组6只。 四组为实验组，动物行管型石膏伸直位制动右膝关节，各组制动时间分别为10天、20天、30天、40天。