Knee replacements!

It has been for the folks I've worked with, pre-op and post-op the best shape you're in before a surgery, "generally" the better recovery! don't think its time to just wait for the knife, prepare your body for it and stay fit. http://well.blogs.nytimes.com/2012/02/27/knee-replacement-may-be-a-lifesaver-for-some/