表 2.

PT of female patients at different time points after operation ( , N·m)

术后各时间点两组女性患者PT比较（ ，N·m）

组别 Group	例数 n	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
		伸膝 Extension	屈膝 Flexion		伸膝 Extension	屈膝 Flexion		伸膝 Extension	屈膝 Flexion		伸膝 Extension	屈膝 Flexion
试验组 Isokinetic group	6	47.93±6.33	30.27±4.49		58.73±6.59	38.22±5.39		63.73±7.69	45.23±3.27		65.87±8.43	47.13±4.17
对照组 Control group	5	47.28±4.55	28.76±3.77		45.74±5.48	32.54±4.21		50.45±4.33	40.34±4.89		57.87±4.62	40.38±5.01
统计值 Statistic		t=0.789 P=0.439	t=0.891 P=0.383		t=5.254 P=0.000	t=2.874 P=0.009		t=5.213 P=0.000	t=2.885 P=0.009		t=2.880 P=0.009	t=2.837 P=0.009