I totally understand how you are feeling. This last surgery with the current spacer was very difficult. The infection was very bad once again so they were telling me there was a chance and there's still a chance I could lose my leg which made my mental state before the surgery very bad. They told me the surgery would take about 3 hours but when they opened me up the surgeon told me it was one of the worst infection he has ever seen so it ended up taking about 7 hours. My days for like the following 2 years were horrible, the pain, weakness and depression. The are better now but still very difficult and Im sure you feel the same way. Since my accident in 2003, I went back to work about 4 times but it would constantly get worse and I would go back in the hospital for another major surgery. Finally my boss said I should just go out on permanent disability so that is where I am at now and to be perfectly honest with you it is very depressing since I've worked since I was 10 years old. Times are very hard financially amongst many other things.
Sorry to ramble it just helps to vent. No companies, sometimes life deals you a bad hand and it can always be worse!
For what it is worth to you, the best advice I can give you is never give up and everyday find a reason to fight it. I'm free if you ever need to vent, I don't have all the answers but I'll always give you my opinion based on my experiences the last 16 years. Im not the best with how these groups work. I hope you have a good night, stay strong!!!!