表 2.

Comparison of KSS scores between the two groups before and after operation (n=40, )

手术前后两组患者KSS评分比较（n=40， ）

组别 Group	临床评分 Clinical score					功能评分 Function score
	术前 Preoperative	术后2年 Postoperative at 2 years	差值 Difference	统计值 Statistic		术前 Preoperative	术后2年 Postoperative at 2 years	差值 Difference	统计值 Statistic
TKA	33.2±3.3	89.3±5.1	56.2±6.3	t=−57.994 P=0.000		16.0±3.3	89.4±2.1	73.4±4.1	t=−118.591 P=0.000
UKA	32.2±2.5	88.3±4.3	56.1±4.9	t=−71.753 P=0.000		15.9±3.1	88.7±2.7	72.9±4.0	t=−117.516 P=0.000
统计值 Statistic	t=1.562 P=0.122	—	t=0.079 P=0.937			t=0.218 P=0.828	—	t=0.604 P=0.548