I had right knee TKR 6 months ago. Perfect ROM and extension (after hard work), functioning very well. However, I am fluctuating between what I would call “awareness” of the artificial joint – just a little sore – to aching, to moderate pain. Depends a little on activity level, weather, who knows, but it is always present, and I resent it. Some (many?) people are pain free at this stage. Should I be concerned, or will the magical 1-year mark fix this?