表 1.

Comparison of MMP-9, MMP-13, and TIMP-1 contents between groups (n=20, )

各组膝关节液MMP-9、MMP-13及TIMP-1含量比较（n=20， ）

组别 Group	MMP-9 (μg/mL)	MMP-13 (μg/mL)	TIMP-1 (pg/mL)
*与C组比较P<0.05 *Compared with group C, P<0.05
A	1.27±0.18*	4.89±1.37*	49.56±19.02*
B	1.01±0.07*	2.95±0.58*	52.45±22.19*
C	0.74±0.07	1.34±0.10	91.52±18.49
统计值 Statistic	F=14.73 P<0.001	F=12.81 P=0.01	F=4.27 P=0.01