There are four important phases in the course of osteoarthritis: the initial phase, the inflammatory phase, pain and degradation phase. The inflammatory phase is characterized by increasing of pro-inflammatory cytokines and leukocyte numbers in the affected joints.4 Interleukin-1 (IL-1) and tumor necrosis factor-α (TNF-α) activates the degradation enzymes such as metalloproteinase, collagenase, gelatinase and agrekanase which can exacerbate the inflammation in the joints affected by OA. Inflammatory products have a negative impact to the joint tissues, especially the joint cartilage and due to destruction of the joints.5