my father is suffering from severe lower back pain. he occasionally gets a sprain kinds, and then cannopt move for days together. we have tried several medicines and consulted many doctors, they say, the gap between 2 bones, through which the spinal nerves pass through is reducing, and in turning jamming the nerves, thats causing the pain. they suggested surgery as the only solution. but am skeptical about a spinal surgery, so wanted some expert opinion on it.