I do not need knee surgery, so the machine did wonders for that. I know my knee feels great and I haven’t had any trouble with it since I started using it after that Doctor’s visit in March. The MRI showed no tears and very little arthritis. The Doctor asked me what I was doing so I told him I was using the machine and he was very interested in that. I am currently using the machine on a horse with Ulcers. We were able to bring him to our barn for 2 weeks for a half hour treatment daily. So far he is doing well. The pressure points for Ulcers is showing less pain and he is getting back to a happy and friendly horsey. His owners have seen a huge change in him, he goes back home tomorrow. We are loving our 2nd machine we got a month ago from you.