表 3.
Comparison of Harris scores of knee joints between the two groups before and after operation (
)
两组患者手术前后膝关节 Harris 评分比较（
）
| 组别
Group |
例数
n |
术前
Preoperative |
术后 3 d
Three days after operation |
术后 3 个月
Three months after operation |
术后 6 个月
Six months after operation |
术后 12 个月
Twelve months after operation |
| 试验组
Trial group |
33 | 35.85±2.26 | 45.94±3.95 | 82.21±1.93 | 82.97±2.07 | 83.30±1.86 |
| 对照组
Control group |
45 | 36.44±2.47 | 43.31±4.91 | 82.55±1.74 | 83.07±2.02 | 83.29±2.04 |
| 统计值
Statistic |
t=−1.099
P=0.275 |
t=2.528
P=0.014 |
t=−0.822
P=0.414 |
t=−0.208
P=0.836 |
t=0.031
P=0.975 |