Medical waiver question

I am a former Marine who was injured while in service more than 14 years ago. I didnt think it would be possible but my lower back pain has been fixed and now I would like to return to service. My doctor has given me a clean bill of health but a Col has told me that one year pain free then re apply. I found this Col information and contacted him directly but no luck. I can p the PFT and I am capable to finaly return to finish my career but I seem to be stuck. I am waiting to hear back from my senator and house congressman but still no luck. Is there another way? Can anyone help or perhaps could show me another way to reach my goal?