You have been through a lot and you shouldn't have been. I believe that surgeon selection is the most important decision we can make as a patient. Surgeons are professionals and like all professionals their skill and experience varies across a bell curve. There are some outliers on the positive end (extraordinary surgeons), some on the negative end who should have their license questioned and most are somewhere in the middle. The challenge is to find the positive outliers.

If I understand you correctly you had a partial knee replacement done by surgeon #1 and after unhappy results from him had him he did a revision through he same incision as the first. The revision replaced the partial with a full. Did he replace the partial entirely or did he incorporate it into the rest of the TKR? Also, why did the first surgeon say he was doing a PKR instead of a TKR? The usual standard is arthritis in one compartment, do a PKR; arthritis in two or more compartments, do a TKR. Did he use a robot? Both times?

Then you went to another surgeon whom you like. Did the second surgeon do a replacement for you on the other leg? How did he do it (method, robot, type of implant, etc.) and how did it come out? Compare the results for us with the other leg. Most importantly, how are the two working together?