4 1/2 months post op and like the others I just get up and get going, the knees follow along and eventually keep up. I think some stiffness is just normal for the first year or so. I am just so thrilled to be able to do the things I want without the pain I was in for the two years prior to the surgery that I don't even think about the minor aches, pains and stiffness that is part of it all. Every week I see some improvement. I don't like heat though for anything, I like ice. I find that heat, for me anyway I am only speaking for myself we are all different, makes me have increased swelling. I do like it on one shoulder that gives me some problems but after having a heating pad catch on fire with me laying on it, I know you aren't supposed to lay on them, I use those pads like the hospital used on the beds. I wet them, wrap them in a towel and stick them in the mictorwave and they give moist heat that is great on my shoulder when it is really bad. Anyway good luck, Rowdy