I recently joined a back forum called iSpine. 

They have articles, a lending library, and, most impressively, a forum for spine patients.  This online community is full of people with serious experience in spine surgeries, pain, specialists, overseas medical travel, medications, old and new techniques, doctors with excellent reputations, and anything else related to back injury and back pain.  Few people can understand living with severe chronic pain, which can be very isolating, so I am heartened to finally find a gathering of people who do understand.  Highly recommended!