I have had the most excruciating pain on the sole and arch of my foot for a year. I spent six months going to various foot specialists and having MRIs etc of the foot only to be told there was nothing wrong with it . Then a pain management specialist indicated that the source of the pain was probably in my back . He did a series of diagnostic nerve root blocks on the L5 S1 nerves. The first didn't work at all but the second and third made me virtually pain free for four amazing months . Then it came back so he did another one and this worked for a couple of weeks. I just had a Microdiscectomy on tbe L5 S1 area but this has not changed the pain in my foot at all which is excruciating. My question is : Is the fact that two/three of the four nerve blocks were so successful DEFINITELY prove that the source of my pain is in my back. If it were in the smaller nerves of my foot for example , if one was trapped by a small bunion I have, would the pain still be stopped by the nerve root block ? Could someone please explain in laymans terms what the positive nerve block outcome indicates with regard to the source of my pain ?
Thanks so much !