Figure 14

The quantitative analysis of CD31 positive cells. Significant differences between PMMA groups and the control group groups are indicated as * (P < 0.05). Significant differences between Fixation group and Non-fixation group are indicated as ** (P < 0.05). Significant differences between 4 and 6 weeks postoperatively in the same group are indicated as *** (P < 0.05). For each group, n = 6.