Hello @bumblebee1 -- I am sorry that your husband has to deal with so much pain. It sounds like the VA has tried a lot of different treatments. My knee is bone on bone but my pain level is probably only a 3 to a 4 and more of an ache than a sharp biting pain. My ortho doc doesn't think I'm a candidate for knee replacement yet and pretty much told me I could end up worse off after a knee replacement. I'm doing physical therapy exercises for stretching and range of motion, basically just keep moving as much as possible. I also have small fiber peripheral neuropathy so I've research a little about nerve damage and nerve pain. Most of the pain med block the pain signal in the brain and have a lot of adverse side effects but if they work and make the pain go away that's a good thing. I just have numbness from my damaged nerves and not much out there that helps with numbness according to my neurologist.

Have you done any research to see if there are new developments or treatments for his pain from his knee injury? A lot of times I will use Google Scholar to find research type information (https://scholar.google.com/). I did find an interesting article but I'm not sure if it's helpful to you.

Prolonged knee pain relief by saphenous block (new technique)
-- http://www.indianjpain.org/article.asp?issn=0970-5333;year=2013;volume=27;issue=1;spage=36;epage=40;aulast=Harshe

Hoping you find some answers...

John