表 2.

Comparison of the pre- and post-operative VAS score and ROM of knee between 2 groups ( )

两组手术前后 VAS 评分及膝关节活动度比较（ ）

组别 Group	膝数 n	VAS 评分 VAS score					膝关节活动度（°） ROM of knee (°)
		术前 Preoperative	术后 1 d One day after operation	术后 3 d Three days after operation	术后 14 d Fourteen days after operation		术前 Preoperative	术后 1 d One day after operation	术后 3 d Three days after operation	术后 14 d Fourteen days after operation
传统入路组 Conventional approach group	51	6.3±0.9	5.4±1.1	6.1±0.9	2.9±1.2		99.5±4.9	40.1±6.8	51.8±8.1	91.7±4.8
微创入路组 Mini-subvastus approach group	49	6.4±1.1	3.0±0.7	4.9±1.2	2.6±0.6		98.6±5.9	47.2±8.2	61.4±10.5	93.3±3.3
统计值 Statistic		t=–0.560 P= 0.579	t=2.538 P=0.014	t=3.698 P=0.001	t=0.678 P=0.502		t=1.448 P=0.655	t=–2.511 P= 0.018	t=–3.341 P= 0.022	t=–0.338 P= 0.756