表 3.

Comparison of range of motion between 2 groups before and after operation (n=17, )

两组手术前后膝关节活动度比较（n=17， ）

组别 Group	术前 Preoperative	术后 6 周 Postoperative at 6 weeks	术后 24 周 Postoperative at 24 weeks	术后 48 周 Postoperative at 48 weeks
试验组 Trial group	100.29±8.74	102.00±5.36	116.24±5.68	127.00±2.37
对照组 Control group	101.47±7.66	103.76±3.35	119.12±4.61	125.65±3.30
统计值 Statistic	t=–0.417 P= 0.679	t=–1.151 P= 0.260	t=–1.624 P= 0.114	t=–1.389 P= 0.174