If I can't get my knee back in shape my sailing days might be over. My left knee has been getting worse over the past few years so I went in on last Thursday and had a "Partial Knee Replacement". Boy, I'm here to tell you that it hurts! I'm on Oxycontin and Oxycodone-Acetaminophin and it still rings my bell ever time I move. These people who have both knees replaced at the same time are just plane nuts. I didn't even have a full replacement. I think I have some water behind the knee which is adding to the discomfort as well. I was planning on doing a club cruise and raft up in a couple of weeks but I can tell it's not happening. Bummer, I was looking forward to it.