What to do about formally denied decision on workers comp

I filed for a recurrence on my hands on March 28, 2014 and was formally denied on July 7, 2014. The doctor put me off work permanentally in March so I applied that day also applying for my social security disability. The only time I was able to talk to my caseworker was to be told that I couldn't retire on comp. I was approved in 1994 for carpal tunnel and rotator cuff. Had to have 2 surgeries on each hand and surgery on my shoulder and was put on permanent limited duty in 1996 up to the currant date. They changed my job duties to typing and writing up to 3 hours daily and after working in pain for 18 years I just couldn't do it anymore. I tried to talk to my caseworker but could never get her on the phone and the messages I left were never returned. I know I will have to file an appeal The dr reports I have state that there is not much to be done. The pt report says he thinks he could help with pt and heat and cold. It also shows my weakness in my handsI tried to talk to my caseworker but could never get her on the phone and the messages I left were never returned. I work for uspo