Two years on the left and 3 mos on the right. Can't complain about either things are going as expected. Left still has it's moments but it's all issues with muscle, usually stiffness and some soreness. ROM is great and of course no joint pain. Filled out the 2 year assessment from my OS, a lot of questions so it took a while. The first questions dealt with stiffness which lets you know it's common. There were sections for comments, I told them I liked it so much I went and had the other one done! It does make you feel good that they follow up and care about their work. The right seems to be right on schedule as far as the recovery goes. Still easy to over do it and still has it's weakness. This one took a while to loosen up the muscles to give me access to my foot. It's been a slow stretching game to get there. Still have a little tightness left if I reach down to put my heel in my shoe. Still have some soreness on my outer hip in one area. I can make it a lot worse by walking in the woods steep uphills and downhills. Walking through town or on walking paths I can go for miles with no problems and no after effects. I still sit on my ice pad in the evenings if I did a lot that day, 4 frozen water bottles and it lasts for hours.