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Comparison of osteotomy healing rate between groups after operation (%)
3组术后各时间点截骨愈合率比较（%）
| 组别
Group |
髋数
n |
4个月
Four months |
8个月
Eight months |
12个月
Twelve months |
| A | 20 | 9（45） | 18（90） | 19（95） |
| B | 30 | 15（50） | 26（87） | 28（93） |
| C | 28 | 21（75） | 26（93） | 27（96） |
| 统计值
Statistic |
χ2=5.484
P=0.064 |
χ2=0.605
P=0.739 |
χ2=0.286
P=0.867 |
