How to know if i will have osteoarthritis?

No predicting: There is no one way to predict the future of someone's health or joints. Genetics can help us know if you are more likely but there are so many factors involved that no one can be sure. The key is to sty active in the pursuits that you find enjoyable. If you start to have joint pain that prevents you from engaging in these activities, then a visit with a doctor should help with both a diagnosis.