You would have to make a Workers' Compensation claim for cumulative trauma but their is a one year statute of limitations from the date last injured/worker there or last providing of benefits , such as medical treatment. There would be a possible civil suit against the designer of the steps for the vehicle, but that has a time limit to file which you have appeared to exceed. Even if you could sue, you would need a medical opinion that it was more probable than not that that activity caused the medical problem. I do not think you can sue/make a claim because of the amount of time that has passed but for your own peace of mind you should go to attorneys who specialize in such types of injury and in WC to be sure.
Answered on Jan 29th, 2015 at 4:18 PM