表 2.

Comparison of HSS score between 2 groups before and after operation (n=17, )

两组手术前后 HSS 评分比较（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	35.59±4.12	58.29±1.93	79.06±2.25	89.76±2.51
对照组 Control group	36.18±3.43	57.59±2.35	72.06±2.82	84.53±3.16
统计值 Statistic	t=–0.452 P= 0.654	t=0.958 P=0.345	t=8.007 P=0.000	t=5.341 P=0.000