My experience is not as severe as yours
1st tkr redone because of wrong size spacer. So that is surgery #2.
#3 was because appliance was not adhering to bone
These 3 were within 10 months.
More than a year later #4 was done in hope of less pain and more mobility. 6 years later, I was still using an ice pack and had a very uneven gait. Then I had back surgery and 5 weeks later developed staph infection in tkr and had to have poly swap. Is it possible to tell if infection was "simmering" for 6 years or from infection from back surgery?