I had TKR on my right knee in early 2017. Had all kinds of physical therapy, home, in and out patient; also had a personal trainer which seemed to help more at the time and did some lap swimming once a week or so but not enough to brag about. Still have a stiff knee but a little less. I use a cane but more for balance because of the lack of flexion in the knee. I do walk every day for about 40 minutes (however, not conscious walking; have to walk to and from my office to transportation). I had some pain off and on - also different types of pain - until several weeks ago. The pain was not enough to take pain killers beyond the occasional aspirin though, although it did wake me up at night at times pulsating. During the last 12 months I've lost a large amount of weight; I am still in a medically supervised weight loss program at NYU Medical Center in NYC. I do think losing weight helps. About one year ago I invested in a hot tub which is outdoors and runs 24-7 continuously ($30,000 plus with all that I had to do to support it -- concrete patio, exterior lights, 22 Kw generator, etc.); did squats in the hot tub (which sometimes resulted in pain afterwards because I probably squatted too far). I try to get in the tub daily either early in the A.M. (like 3:30 A.M. or after 10:00 P.M. - I commute). i have not returned to surgeon in over 2 years. It is still difficult to put on shoes/boots because of my lack of bend but it is slightly better. On the commuter bus (90+ minutes each way) I try to sit in the rear seat in the aisle whenever I can get it or in an aisle seat so that I can stretch my leg out. I now stand on the subway (easier than having people inadvertently knocking against or stepping on the foot that is swung out for my 15 minute subway ride). I cannot say definitively why the pain has disappeared but will tell you what I've been doing now. Started mixing organic Moringa oleifera leaf powder (1 tiny scoop, about a teaspoon) in my meal replacement protein shakes twice a day. It does not taste great but the vanilla shake masks the taste to a great degree. Since I started taking this (have not discussed this with my medical team yet though) I started noticing less discomfort and actually no pain, and feel I am walking more freely. I just started forcing myself to walk around at home and in my office without the cane. I believe that the Moringa leaf powder is reducing the inflammation. Yes I do have scar tissue but I am sure there was more inflammation before (sometimes my knee appeared swollen to others). You can read up on this on line but the important thing is to purchase it from a good source. I also started drinking matcha green tea (purchased the powder and make it myself). You can also include the powder in cereal, shakes, etc. I eat one or two healthy meals a day (small amount of poultry, fish or meat, broccoli, cautiflower, kale, spinach greens, etc.). However you can read up on this too. I do believe, however, that the Moringa leaf powder has most to do with my feeling better.