Objectives: Osteoarthritis of the knee can caused by sosiolis. The Purpose of this study is to find out the influence of scoliosis caused secondary osteorthritis of the knee in athlete, based on cobbs degree, Scolisis curve. Materials and Method: This research use an analytic cross-sectional design. The total sample of 92 athletes scoliosis taken by simple random sampling technique. The data were analyzing with Chi-square test, fisher and prevalence rasio. Result: The result show that there were influences on the incidence of scoliosis towards secondary osteoarthritis of the knee in athletes at the national sports hopsital.Based on the cirteria in the cobbs angle had the results (p=0.022 (p<0.05)), moderate cobbs angle degree were 7.5 times more at risk of cousing secondary osteoarthritis on the knee than a mild degree. The other hand shape of the curve scoliosis had results (p=0.038(p<0.05)), the shape of the S cirve scoliosis 3.2 Times more at risk of causing secondary osteoarthritis on the knee than the curve C. Conclusion: It had to be concluded that there was influcence between cobbs degree scoliosis and shape curve towards incidence of secondary osteoarthritis on the knee