I need help figuring out my father's life long problems?

Your concerns about your father are quite warranted, and I'm sure his issues have affected you quite a bit in your life. I think it would help you a fair amount more to figure out how he has affected you and how that will impact your own life, as opposed to wondering what contributed to your father's difficulties. As soon as you're mobile again, you might consider seeking the help of a psychologist that you can really connect with. That person could help you cope with anything that comes up between you and your father in the future as well. Hopefully things look up soon (and watch that Oxycodone, it pretty addictive ;) ) !