METHODS
Study Subjects
A total of 80 patients with knee OA were eligible and willing to participate in this study. Subjects were divided randomly into two groups: the group who received 30 mg 3 times daily of curcuminoid from Curcuma domestica Val. rhizome extract (curcuminoid group) and the group who received 25 mg 3 times daily of diclofenac sodium (diclofenac group). The study protocol was approved by the ethics committee Faculty of Medicine Gadjah Mada University, with a permission from the Director of Sardjito Hospital and informed consent was obtained from all patients.