I had tkr 10 weeks ago and have soooo much pain and clunking noises and catching when i bend my knee. I have good flex, (135 degrees) and extension is 0. I have faithfully been doing my exercises but something seems WRONG. As the swelling has been going down this problem seems to be getting worse. Does anyone have any help, suggestions, or ideas what could be wrong? Has anyone else had this same problem?