I had bi-lateral knee replacement august 2003. i am now having sharp, burning pain in the inside right knee and a little swelling? It gets stiff after sleeping and sitting and by the end of the day - can hardly walk. I have an appointment with my ortho dr on wed. but I am wondering if anyone out there has had loosing of the the joint and what does it feel like? I am hoping it is something else, but worry about having this. My mother (who has p***ed away) had both knees done and had this happen and had to have them redone. I am 52 years old and really don't want to keep having surgery on my knees.