表 4.

MRI scores at different time points after operation (n=12, )

两组术后各时间点MRI评分比较（n=12， ）

组别 Group	术后 3 个月 Three months after operation	术后 6 个月 Six months after operation	术后 12 个月 Twelve months after operation	二次镜检 Second-look arthroscopy
试验组 Isokinetic group	78.43±6.82	50.47±4.45	67.37±4.95	77.84±5.44
对照组 Control group	77.63±6.73	49.73±5.62	57.78±4.31	76.54±4.47
统计值 Statistic	t=0.290 P=0.774	t=0.355 P=0.726	t=5.059 P=0.000	t=0.642 P=0.528