表 1.

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

术后各时间点两组男性患者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	76.87±8.78	53.78±9.18		100.47±11.13	70.76±4.53		123.37±13.56	80.84±7.28		127.48±10.56	78.84±9.39
对照组 Control group	7	74.52±9.97	50.58±10.62		87.34±9.72	60.42±6.54		103.28±10.33	68.57±6.74		105.28±10.33	67.39±8.74
统计值 Statistic		t=0.613 P=0.546	t=0.789 P=0.439		t=3.075 P=0.005	t=4.505 P=0.000		t=4.082 P=0.000	t=4.284 P=0.000		t=5.206 P=0.000	t=3.093 P=0.005