表 1.

Comparison of Harris score between 2 groups at pre- and post-operation ( )

两组手术前后 Harris 评分比较（ ）

组别 Group	术前 Preoperative	术后 2 周 Postoperative at 2 weeks	术后 6 周 Postoperative at 6 weeks	术后 3 个月 Postoperative at 3 months	术后 6 个月 Postoperative at 6 months
A	56.43± 9.35	67.87±13.63	84.53±10.53	89.63±8.63	92.90±8.25
B	59.73±11.09	71.83±11.76	81.57±12.55	91.53±9.50	94.64±8.68
统计值 Statistic	t=–1.246 P= 0.218	t=–1.207 P= 0.233	t=0.992 P=0.325	t=–0.811 P= 0.421	t=–0.670 P= 0.507