i was diagnosed with cervical sprain 4 yrs ago, to this day it still bothers me it now radiates to my shoulder on the left side, last night i noticed a dent in my back just near the left shoulder, I have been in lots pain I have recieved shots in my spine, chiropractors, pyhsical therpy nothing helps. my question is what is the dent and what will stop the burning, numbness and pain.