I had a TKR in January 2020. I had previously had a THR in 2003. (I would rather get ten hip replacements than another knee replacement) I found the knee surgery recovery to be very challenging and ended up with some weird complications. I worked hard at it and I think it took me nine weeks before I could do a full turn around of the pedals in the stationary bike. now my bend is great and actually better than a lot of people with good knees. I have zero pain when sitting, laying or standing and can walk on flat surfaces with no trouble other than some discomfort if I walk too far. However any walking where there is a decline (even small declines), or uneven ground, or turning too quickly, my knee gives out. It isn’t buckling like what happened pre surgery - more of an aggressive sudden thrust forward. it is so unstable and I feel I can’t trust it. It makes me sad as I had hoped the tkr would let me live a really active life. I saw surgeon today and had X-rays and Knee examined and he says that I am all stretched out (?) and they need to tighten it up by doing a surgery where they replace the plastic space thing. All of my joints are hyper mobile and hyperextend so this might be part of the issue. I was quite shocked to hear I needed another flipping surgery as I expected to get some new physio exercises. Of course I couldn’t think of questions to ask until I had left. I’ve done a bit of Googling and found some articles that say this surgery is not that effective at fixing unstable knees. So I am wondering how the pain level, rehab and recovery time compares to a tkr. with the tkr I was off work for 12 weeks but I was closer to a year before I started to really improve. Also has anyone here had knee instability and had this surgery. Thank you for your help.