Abstract:ABSTRACT: Objective: To investigate the effects of pregabalin combined with chondroitin sulfate on the levels of MMP-3 and TIMP-1 in patients with knee osteoarthritis pain. Methods: 100 cases of patients with knee osteoarthritis pain in our hospital were divided into two groups according to the different therapeutic schedules. 50 cases of patients were treated with chondroitin sulfate as the control group, while 50 cases of patients were treated with pregabalin combined with chondroitin sulfate as the observation group. Results: After treatment, the level of MMP-3 of patients in the observation group was significantly lower than that in the control group, the level of TIMP-1 of patients in the observation group was significantly higher than that in the control group. There was no significant difference in VAS score between the two groups before treatment (P>0.05). The joint pain of patients in both groups was effectively controlled. However, the improvement of pain score of patients in the observation group was more significant. There was no significant difference in WOMAC score between the two groups before treatment. After treatment, the joint pain degree of patients in both groups was improved. The improvement of WOMAC score of patients in the observation group was more significant in each stage. 1 case of patient occurred to nausea in the observation group. 2 cases of patients in the control group occurred to vomiting and dizziness in the control group. Conclusion: As for the treatment of knee osteoarthritis pain, compared with the simple medication, pregabalin combined with chondroitin sulfate is more conducive to the improvement of clinical indicators and can alleviate the degree of joint pain in short-time period.