Saw the Ortho today. Apparently my fall was hard enough that something probably shifted inside my bad knee, and with my severe patella arthritis there wasn't any room for something like that. Eventually I will at least need a procedure to clean out the knee and realign the patella, but neither of us is ready to do that now. I see him in another 4 weeks to see where things are, and I have seen some small signs of improvement in the last week or so. So back to my braces and listening to my body!