Ramblings From a Cage

My leg is a source of a lot of grief in my life. Five months ago, my knee suffered a traumatic injury, I was given a sixty percent chance of not needing surgery so we would try therapy first. I was on crutches, and mostly stuck in bed for two and a half months before my insurance finally decided to OK my physical therapy.
Physical therapy has been productive. I gained a functional range of motion (97%), and have been working on strengthening. I had significant atrophy, and have slowly been growing muscle again, so when my leg muscles HURT, part of me is happy because it means I have muscle at all!
However, my leg has put me in a cage for five months. I am a free bird, caged. People have to do things for me, which I dont like. I cant do what I want or like to do. I feel as if I am a failure as a mom, especially to my youngest, because I simply cant do a lot of the things I need to do for him.
I am depressed. I have been in a very deep depression all summer long that has been getting worse.
Now, my anxiety is increasing daily in regard to the impending winter.
Ice.
I am afraid of it.
Ice and snow pose a great risk for me. My goal has been to be off of these crutches before the snow comes. It is getting colder all the time. I am worried about it.
If I fall? I expect to be back to the beginning, or worse. If I fall, I expect I will need the surgery. If I fall, I worry that I may never be able to walk again.
Even if I do manage to get off the crutches before the ice comes, and am walking on my own, I imagine I will still be somewhat unstable, and my balance will be precarious.
The cold weather is coming towards me vengefully, with doom in its cackling eyes.
I just want to be able to function in my daily life.