Just got the bad news last week. There is noting worth saving in the knee Doc said. MCL torn, meniscus both torn. MRI shows fluid still in the knee joint 8 weeks later, several areas of bone on bone contact and full of arthritis, there was none in 2009 according to that Doc. It's been scoped in 2005, and discovered a large void in the front of the femur behind knee cap about the size of a 50 cent piece, where cartilage use to be. Doc didn't have ok to fix that so just cleaned it out. Workers comp case. Later in 2005, OATS procedure(imbedded 2 bone/cartilage plugs in the void) failed miserably. 2009 rescoped and cleaned void to gather good cartilage to regenerate using Carticel procedure. This worked pretty well resumed ice hockey, skiing, till now. Some A$$CLOWN thought it was funny to not clean his work area, so naturally I found it. Slipped and fell, tore right hamstring and left knee impacted plate steel. So who has had a complete or partial knee replacement, how old were you, why was it replaced and how is it today. Not looking forward to the CPM machine, that is a torture device.