I wrote this article to stress the point that TKR sees a lot of marketing hype with positive reviews from patients. Negative reviews are rarely seen. My research prior to my first surgery took me to a TKR seminar where the Ortho lecturer was asked many questions from potential future TKR patients in the audience. In his frustration receiving so many questions he blurted out "remember, your knee will never be normal."
I'm on a forum with retirees from the company I retired from and communicate with TKR recipients. The count is presently up to 14. Most of us still have issues from pain to limited ROM. The ones that claim they are happy with the results are those that have less pain than they had prior to surgery and ROM is not an issue with them. All in all, my research indicates that the positive reviews are mostly from TKR institutes.
Check out "bonesmart.org" for a better happy/not happy balance.