Chances of getting disability?

I cut 3 of my fingers off 2 years ago with a table saw, and I have little movement in those 3 fingers. All the cartilage in my right knee is gone. the joint in my knee is rubbing against bone. I have severe depression and anxiety. I have stuff from 3 doctors stating that I need to get disability. My knee doctor recommended it because I cannot stand, or walk for a prolonged amount of time. The end joint in my fingers are fused together, I cannot move them at all.