Objective: To observe the effect of Guanjiezhitong capsule on free radical level in serum and articular fluid of Knee Osteoarthritis, and explore the possible mechanism of KOA.

• 目的:观察关节止痛胶囊对膝骨性关节炎血清、关节液自由基水平的影响,并探讨其作用机理及膝骨性关节炎的发病机制。