@dislocate - Is the surgeon you saw for a second opinion one who specializes in fixing knees with problems? I suspect not. Don't be put off by seeing two surgeons who are not prepared to do anything to help you. To me, that says they don't have sufficient experience in doing knee replacement revisions - not that there is nothing that can be done to fix your knee's problems.
There are surgeons who specialize in doing knee replacement revisions and who spend every working day in dealing with problem knees. That is the sort of surgeon you need, because those surgeons can often spot a problem and suggest a solution that has eluded other surgeons.
Don't condemn yourself to a life that is less than it could be. In spite of the impression you've gained, the percentage of people who are dissatisfied with their knee replacements is actually low, when compared to those who have a successful outcome. It's 10-15%, compared with 85%-90% of successful outcomes.
When you come to a site like BoneSmart, you tend to get a slightly distorted impression about the outcomes of knee replacement surgery. That's because many of the people who come here are having problems with their new knees and they're looking for advice. The people who have uncomplicated recoveries and go back to leading a normal, pain-free life don't come here. They have no need to search for help and advice.
I have had three knee replacements. One of those was a revision, because a partial knee replacement failed. I Had that knee revised to a TKR and it's now 8 years old, and serving me well. In fact, both my knees are good. I can do anything I want with them and the only time they hurt at all is if I twist them by accident. The rest of the time, I actually forget I have bionic knees.
Here are some stories of people who have done well after knee replacements, and who are participating in activities most of us would not have contemplated, even before our knees became arthritic. While their levels of activity are probably exceptional, most people return to a normal life, with more mobility and less pain than they had prior to surgery.
Stories of amazing knee recoveries