@marbowl I also had swelling when I picked up the walking, so it is not surprising, considering how much you have to be on your feet. If there is any way during lunch or break to put your leg up and get some ice on the knee, that would also help. As @ellerbracke mentioned, I stopped being so serious about the specific knee exercises at around 5-6 months, but now I will have to pick it up again, especially the bending. I found a doctor's website, which of course I can't find again, in which he advised a much longer time on bending and extension--i.e. when you sit down to watch TV (if one has that luxury), bend the knee up and keep it there, pulled in hard and with pressure, for 30-60 minutes. I have never done that, but I have held it for 10 minutes, let it go, then do it again, and I think that helped me with gaining flexion. Best of luck!