Three-phase bone scanning was performed by 99Tcm-MDP before and 1 month, 3 months, 6 months, 1 year and 2 years after fixation respectively.

• 固定前、固定后1，3，6个月、1，2年分别以99锝标记的亚甲基二磷酸盐进行三相骨显像。