I was terminated from a job in March of 07.  Due to a "non-work related" injury to my neck.  I had a plate put in my neck and the case was settled.  The injury was in the neck.  The date of that injury was Jan. 06.  In nov. 05 I had injured my shoulder.  The dr. called it a strain to the trapezoid area.  Recently I was told by my dr. that there is a problem with my rotator cuff.  The pain is the same I experienced in nov. 05.  Obviously there was a mis diagnosis.  I also have lots of problems in my lower back.  3 disk are basically gone.  The contract said the neck was the injury with the back and shoulders being affected.  My question is because I signed a contract that says I could not hold employer accountable again with the neck injury.  Does this now exclude the lower back and rotator cuff?