I'm sorry to hear about it too. I get some twinges from arthritis too, but when I was in my 30's it was quite bad in my left hand thumb. I ended up seeing a rheumatologist in Harley Street and he gave me a gold injection into the joint, and it is now over 20 years later and I have very few problems with it. I don't know if that is an option for your knee, but if it is, then i would recommend it to you.