(my opinion) You can't stay on meds without some serious things going wrong IN TIME from them, so you had to have the TKR sooner or later, the meds would just mess you up and not let know about it until some serious internal problem developed. My TKR knee turned out real good, I am very satisfied after 5 months, the numbness of the foot is another story, it is the same as day two after TKR, I have tried everything to make it go away, from special vitamins (for nerve damage) to extreme exercise, to deep tissue massage, nothing worked. As disturbing as it is (heel & ball foot numbness) it does not stop any activity and believe it or not I think I am getting used to it somewhat.
Chin up, at least knee pain will stop.
PS I did make an appointment with a neurologist, takes 1,5 months to see them here in NJ, they will not be able to do anything but at least I will know were the nerve damage is coming from, No more cutting me up if I can help it.