I too was in a mva and suffer severe back pain along with many other medical problems due to this injury, I have had the injections, pain meds, therapy, none of those offered any relief, what I do use is a tens unit its a nerve stimulator and it really does help ease the pain, I also do alot of back stretches , its been 2 years although the pain has never gone away it has gotten a little better, being you were involved in a mva, and if you have a orthropedic doctor, he can write you a prescription, for the tens unit, and the mva insurance should cover the cost, mine did, I have never gone to a pain clinic so im not sure what it is your talking about, basically its about adjusting the way you use to live, its hard but for me the pain has become apart of life, if you need any other advice pm me id be glad to help, good luck