Well that doesn't sounds like a whole lot of fun. Now as far as elevated, do you have to keep your leg above your heart, or other such nonsense? or is it so that there's just not a whole lot of pressure on it? If the former, I can see why knitting would be tiring for you. Either way, get to feeling better quick so you can get back to doing what you love.
Wisdom is knowing what to do. Skill is how to do it. Virtue is getting it done.
That which does not kill you, isn't trying hard enough.