It appears that I can run (!!, right?). Although I don't yet appear to believe it and only ever manage to do it when I'm not thinking about it. Last time it was in pursuit of a bus, this time it was crossing the West Side Highway (for non-NYCers, it's 3 lanes of traffic in each direction) as the hand was blinking. We were partway across when my friend said "Let's go for it!" and took off; I was left with no choice but to run after him. And I ran! Didn't hobble or lurch or anything. Not only that, but I ran without pain.
Which is a new theme - pain-free days. After the (literally) years of mental and physical agitation, I am free, at least for now. Which makes it really hard to have a bad day.