What would the pros and cons of spinal fusion surgery be?

More pro than cons. the surgery is indicated to save a nerve that has been pressure by a herniated disc,otherwise the patient will end up with permanent nerve damage.not for pain. the pros for fusion is to stabilize the level above and below the herniated disc level,to prevent recurrence or other level collapsing,preferably with a bone graft. the cons may be limit of motion depending how many level has to be fused. .