Christopher I would probably not walk again if I did any more damage to my knee. The messed up part is I injured the knee at work and the worker's comp doctor was only concerned with money and how far he could string the company into paying instead of making sure I was fully able to work again. The worse part is I miss that job so much but I can't do that type of work any longer. So I re-trained for something different in a totally different area of work.
As they say you are never to old to learn something. :)