[Zeke]

I rode one from about age 14, as a yell leader in high school, and into my 30's. Much less as time went on. That's probably what's wrong with my knees today. Those things are really tough. I rode a bicycle quite a bit as well for many years, but had to lay off more than a few dozen city blocks by the time I was 50. I'd still say the unicycle might have caused some damage. No surgery, yet.