its good to get data here, but contacting the maker is definitive.I was given a Valve Implant card when i was in the hospital so I'll show that to the Ortho MD and the MRI tech if I need an MRI...I wonder if maybe the knee could get evaluated by ultrasound?....meanwhile I'll rest the knee. Gotta get healed up so I can SKI this winter!! Downhill skied last year and it was: SO. MUCH. FUN!!