Osteoarthritis Knee Exercises How Can I Rebuild My Knee Cartilages?

How can I rebuild my knee cartilages? - osteoarthritis knee exercises

I have arthritis in my knee, I'm fat, I know that because of arthritis, but I can not fall through the exercise because I have pain on my knees, I have to rebuild the cartilage had the problem should be solved, I sometimes pain and take painkillers, but I do not trust them so long, I mean the reconstruction of cartilage, so I do not take more drugs, please help.