I do not know how it happened. I was involved in reality based combat for a number of years which involved many sever impacts that have left a few lasting injuries and scars. However, this was years ago now. Both the doctor and physio said that it could have been something small that with neglect became large. My body compensated for the injury, but over a period of time the injury caught up. This makes sense as I remember my back 'bugging' me once and awhile last year. It slowly got worse. In the beginning I didn't give it much thought- figured I went too hard one training session, but then it turned into every training session, then I couldn’t get out of bed because of the pain...
I do not know the specifics of the diagnosis either. I will ask at my next appointment- this Thursday. If it helps, I will try and explain the area. If one starts at the pelvis, it is the first 'large' vertebra of the spine. If I run my fingers along my lower back, I believe it is the 3rd up from the pelvis. I said it is the first large one because it is the first point in my spine where I can really feel the vertebrae individually. The 'two' below are small and hard to tell apart- there may be more than two or less(?). When I run my fingers along my spine, I can feel this vertebra bulging to the left side.
I'm sorry I cannot be more helpful, as I appreciate your effort to help me.
I will get more information for you.