Abstract:Abstract: Objective?To observe the efficacy of treatment with mini-invasive surgery on meniscal injury and the level of markers in serum.?Method?138 cases diagnosed as meniscal injury in knee joint, 2 patients lost were excluded from the study, which was divided into observation group (68 cases) and a contrast group (68 cases) randomly. The control group were treated by conservative treatment measures, the observation group were treated by mini-invasive surgery. The knee function was measured by Lysholm scores, statistical analyze the treatment effects and the complications between the two groups. The levels of BGP, IGF-Ⅰ and MMP-1 were measured by ELISA method.?Results?The difference was statistically significant (P?0.05) between the two groups of knee functional scores. The knee functional scores in observation group was higher than that in control group. The difference was statistically significant (P?0.05) in the two groups of treatment effects, the treatment effects in observation group was better than that in control group. The difference was statistically significant (P?0.05) in the two groups of the rate of complications, the rate of complications in observation group was lower than that in control group. The difference was statistically significant (P?0.05) in the two groups of the levels of BGP, IGF-Ⅰ and MMP-1 after therapy. The levels of BGP, IGF-Ⅰ and MMP-1 declined after therapy, and the levels of BGP, IGF-Ⅰ and MMP-1 after therapy in observation group was lower than that in control group.?Conclusion?Treatment with minimally invasive surgery is effective for meniscal injury in knee joint with low complication rate and can lower the levels of BGP, IGF-Ⅰ and MMP-1.