I don't post these things but I am having a total knee replacement Thursday but have to have a Greenfield filter installed tomorrow. I am a massive pulmonary embolism survivor, had last rites performed on me and told all my family members goodbye, Obviously I survived but the docs called me a miracle man. This is the same leg that tried to kill me then and I have a genetic protein C issue. To say I'm nervous is an understatement. I know this site has its moments but there are some great people on here. Thanks in advance...