I too have a tight feeling around my knee, ankle, and foot. TKR, left knee June ‘19, so it also has been awhile. After the joint got infected in August of the same year I had to wear an immobilizer and the sensation I constantly have is that I am still wearing it. My range of motion in the knee is around 120 degrees, though. It is my foot that now causes most of my present issues. See my reply to butter12.