I'm similar to you Barsel. I have bad knee pain in one leg and don't want the op. for the same reasons as you. I take Zapain on prescription and have been doing so for years, they don't work as well as they used to, but do take the edge of and I know I couldn't walk without them. I have considered getting a mobility scooter in the future, I can still take my dog out for walks with one, as I see a lady regularly doing this ! I prefer waking around though as I've been told it's best to keep the leg mobile. Have you thought of using patches on your knee, there are loads available on line ? If I decided to use them, I would buy the more expensive ones in the hope they would work better. You say the pain is now travelling to your thigh, I wonder if you have an infection ? A GP could prescribe antibiotics. As for any private treatment you may wish to undertake, I would just Google this to see how expensive it would be in your area. Lastly, I find heat on my knee area helps and often use a hot water bottle at night while watching TV. It's quite comforting.