Hello @hospdoc, and welcome to Connect. Thank you for sharing your story with the other members of this group and discussion.
I also had a bad recovery from a total knee replacement in 2006. I had to have two manipulations, and when that didn’t work I did a full leg cast with cranks at the knee joint that I would turn to manually apply pressure to bend my knee. That still didn’t work. One day, about a year and a half after my surgery I popped the knee loose on my own on accident and I now have 0-100.
From one TKR to another, all I can say is keep pushing and keeping seeking answers, it can get better, even if it takes more time than you originally thought. I’d be interested to hear more about your astym treatment if you don’t mind sharing with the group.