表 6.

Comparison of TK and LL at pre- and post-operation between the two groups (°, )

两组患者手术前后各时间点 TK 和 LL 比较（°， ）

组别 Group	例数 n	TK						LL
		术前 Preoperative	术后 1 个月 Postoperative at 1 month	术后 1 年 Postoperative at 1 year	术后 2 年 Postoperative at 2 years	统计值 Statistic		术前 Preoperative	术后 1 个月 Postoperative at 1 month	术后 1 年 Postoperative at 1 year	术后 2 年 Postoperative at 2 years	统计值 Statistic
*与同组术前比较P<0.05，#与同组术后 1 个月比较P<0.05，△与同组术后 1 年比较P<0.05 *Compared with preoperative value, P<0.05;#compared with postoperative value at 1 month, P<0.05;△compared with postoperative value at 1 year, P<0.05
A	17	27.2±9.8#△	22.2±3.7*	22.4±3.7*	22.3±3.7*	F=2.962 P=0.039		43.5±3.9	43.8±3.9	43.7±3.7	43.7±3.7	F=0.014 P=0.998
B	20	24.8±7.0#△	22.5±3.4*	22.8±3.3*	22.8±3.2*	F=2.788 P=0.036		43.4±3.2	43.3±3.0	43.5±3.2	43.3±3.1	F=0.013 P=0.998
统计值 Statistic		t=0.858 P=0.397	t=–0.263 P= 0.794	t=–0.356 P= 0.724	t=–0.456 P= 0.651			t=0.125 P=0.901	t=0.417 P=0.679	t=0.220 P=0.827	t=0.415 P=0.681