Hi Cathyn. I'm experiencing similar issues with my knees, which were replaced in March and October 2018. I had an excellent recovery at the time, and the only problem I've encountered is that it hurts to kneel - so I just don't. But lately, I've been feeling stiffness in both knees. No pain, just tightness. I'm hoping someone can suggest a cause and perhaps a solution. I'll admit to having been more inactive lately, with my depression having ramped up in the last year or so. Covid, stress etc. Anyway, I'm wondering if some energetic massage would help, along with the exercises that I used to do to improve ROM after surgery. The only thing I can think of is a build-up of scar tissue, but I can't find anything that says that can happen 3 years post-op.