If you were injured on the job, you do have a WC case like everyone here before me has stated. Workers Compensation insurance companies will do anything they can to weasel out of paying you. My husband went through hell with the State Insurance Fund when he passed out at work and broke his back. They insisted he fell flat on his face from a nine foot drop, and not on his back, so it couldn't have been that incident that broke it, but something else from his past he forgot. But when we went to court, and they were asked how if he fell nine feet totally unconcious, why he didn't have a single bruise or mark on his face or body on the front, since he wouldn't have put his hands out to protect himself. They changed their tune and paid us, but it took a while. So don't let them give you a hard time. If you were hurt on the job, they need to compensate you and pay for all your medical care for that knee for the rest of your life, unless you agree otherwise. At least thats the way it was with my husbands back.
My dad worked for the SIF, and I remember him saying he quit the day he heard the one lawyer for them arguing against a guy who had a hammer fall off a roof and take his eyelid off at work, permanently blinding him. Once he heard the lawyer tell the poor guy he had always been missing an eyelid and been blind in that eye, he just didn't notice, my dad decided it was time for a new line of work. 😉