I also had ACI and TTO. As you can see from my signature, I got MRSA in one of the screw holes for the TTO. As far as I'm concerned, that surgery was the worst thing I've ever done. The pain relief from the arthritis was better for a couple of years but it was replaced by pain from the muscle-flap surgery for about the same length of time. I wish I'd had a TKR in 2013. My pain is less than it has been in at least 7-8 years at 12 weeks postop.