Hello, Chondrocalcinosis is a rare genetic (familiar) disorder where your body creates more calcium and that deposit in the joints. There is nothing that you can do to prevent the calcium formation. The treatment is mainly symptomatic and supportive. In the beginning, we start treatment with nonsteroidal anti-inflammatory drugs. Sometimes Colchicine, that we use to treat gout, helps more than other drugs. If your knee is swollen and painful, doctor can aspirate the fluid with syringe and give you a knee brace to rest it. In your case since you have meniscus tear, I would suggest you to have arthroscopic surgery to clean the meniscus and the calcium crystals. Keep in mind the calcium crystals can be formed again after the knee arthroscopy. If your joint is badly damaged then you can have knee replacement surgery. Hope I have answered your query. Let me know if I can assist you further. Regards, Dr. Edvin Selmani