Yuck yuck yuck, I'm so sorry your going through this. My knee's and I have been through multiple surgeries together - its never fun, but always necessary.
Wish I had something helpful to share with you but I don't. I will say at my last revision my surgeon was in there 6.5 hours. He mixed my red blood cells with the cement and I can say my knee feels stable. He also said my healing would take at least 18-24 months because of all the work the knee's been through. I'm still icing and elevating. Its tight and sore, but stable. Hopefully time will be on your side.