This is an unusual question. But what is the surgeon's responsibility 21 months post surgery? Not sure they really want to know of complications - maybe do not wish to acknowledge them. My 2nd TKR, like my first with a different surgeon, was not really painful (that's good). Recovery was good - I did my exercises and go to gym 4 days/week. My ROM with #2 is about 110-115 (that is OK). But that leg has always been a little swollen. Have seen surgeon several times, but I think I have discovered the problem. The nerve must have been injured or cut. That leg has been "slightly numb" since right after surgery. My coordination or balance are a little off. I am starting to bump into things sometimes (NEVER had this problem. I am athletic; play sports). Going downstairs is slow and takes some concentration. Going upstairs my leg(s) are a little weak sometimes. I believe I do not pick up that foot/leg as much as I should. I think the whole episode is due to damaged/cut/clipped nerve. New side effect: when I run playing Pickleball that leg (only RECENTLY) does not have full ability - it's as if the message in not getting fully through (???) Maybe it is pinched nerve? Maybe damaged nerve? What can be done? What should the surgeon do? He tells me to strengthen my core. (???) I just went to a physiatrist and he is sending me to PT to see what can be discovered. Wonder if I should return to specifically post-op exercises?