workers comp

i got hurt at work about 3 or 4 yrs ago, workers comp paid 4 my surgerys,then they settled up and fired me, since then, the company has went under, they filed bankrupcy and r no longer in sc, but they still have their main plant up north. Now, I have a terrible mass of scar tissue build up and i neen more surgery! What do I do? Do they have 2 re open my case since the workers comp settled and the company went under where I worked and also, my surgen that did all the surgerys I had 2 have has now retired, does anyone know of anything like this and waht or where should I start? you can email me at [email protected].