I Have Shin Splints Bad , Got Them In Basic

i have shin splints bad , got them in basic training in 1968 visited military doc 5 different times over a 3 yr period was told there was no cure and to go back to my co. and complete my assignment, which i did.
I have had pain since that time now that i am 66 yrs old it has gotten so bad i have to stop working. my wife and i do not have enough income to do that . The mitilary doc have tried everything except now they want to give me a MRI they just x rayed me and found no cracks in my shins which they did when this occured. I have a claim in for dissability and they are trying everything they can to turn it down the pain is about 7-9 daily on a 10 scale . all through the years the pain has stayed at about a 5 day and night sometimes more