Mainly physical therapy! Steam with hot air! The same principle as sauna! My mother has been there several times! It was a good time! Do it later! This must be adhered to! My mother doesn't want to go again! I made a kettle for my mother! Connect the kettle with a pipe and put a ten-catty bucket on your knee! Steam every day! It hasn't hurt for some time! The principle is the same! I hope your family can stay away from rheumatism!