thanks. i am currently awaiting a determination on depression caused by my primary 40 percent back condition. i finally managed after years of trying to get my back from 10 to 40 percent. i'm not real sure how i get it to 50. i have been using an electric wheelchair that i successfuly got the va to issue me almost 6 years ago. it was given to me for a combination of my back issues and rheumatoid arthritis. when i did get my rating up, the doctor who did the c&p even admitted on the exam there was no way to determine from xrays of my back whether the damage was caused from osteoarthritis or rheumatoid. of course, the va gave me 40 because of the range of motion criteria, arguing the chair was for the rheumatoid.