Yes, I experienced this same thing after my tkr. I also have PTSD and am on antidepressants and anti anxiety meds. The PTSD started years before my surgery. I felt my world was falling apart. Not only did I have serious pain from the surgery but also the horrible mental and emotional trauma. I am very sorry that my surgeon knowing my history, never warned me. I suffered through this alone because my psych provider wasn’t much help. When I finally learned why I was feeling so terrible I spoke with the nurse at my surgeon’s office about it. I was angry that the surgeon should have known and prepared me at least warned me. The nurse’s response was that not everyone has that. Needless to say I am leaving the surgeon and his staff. I wish now that I had never had the surgery.