Well it has been just about 2 years since my first answer to what was going on. I am pretty much back to full strength. Needless to say I have never had another flu shot! The only thing I can say is keep up hope. I continued to work out during the weak times and did not cause any damage. Before getting any surgery I would definitely explore the possibility of the flu shot being the cause of anyones issues. Let me know if I can help with anything.