This has been a long journey. My surgeon had a policy of waiting a minimum of six weeks between knee replacements in order to have the first knee partially restored to normal function and observing how the recovery is progressing prior to doing the second knee. My first knee recovered beautifully and six weeks later the second knee was replaced on schedule. The second knee did not recover as quickly and about four weeks after the TKR I returned for a Manipulation Under Anesthesia (MUA). Following the MUA I was able to achieve full range of motion in that knee, although it was more painful than the first knee. Within a couple of months I was able to ride a bike, go up and down stairs normally, take long hikes and cross country ski. After a few more months I realized that I was beginning to lose my ROM and it was getting more difficult to go up and down stairs so I returned to the surgeon who said all of the components appeared to be normal and he recommended additional physical therapy. Once I began therapy the therapist noticed that even following marginal improvement in ROM following a therapy session the ROM had decreased by my next visit and he diagnosed my problem as arthrofibrosis. At this point I went to a different surgeon for a second opinion and following a negative test to see if my problem was due to an infection and X-rays that confirmed all TKR components appeared to be normal, he agreed that the issue was arthrofibrosis (excessive scar tissue).