I recently had my third Microdiscectomy in 26 months at the L5-S1 level to remove a portion of a the disk herniation. Surgeon said he removed almost all of the disk, so that "chances of reherniation are close to zero". Surgeon says remaining disk will wear down and one of three things will happen 1) The vetebre will self fuse, and the problem will then be taken care of 2) the vetebre will be bone on bone, will not self fuse and will cause no pain, 3) the vetebre will be bone on bone, will not self fuse and will cause pain. Scenario 3 could require a surgical fusion. Has anyone else had almost all of their disk removed, but have not had a surgical fusion? The surgeon quoted a 50%/50% chance that the bones will self fuse and if they do not, a 40% that they would cause pain from bone on bone rubbing.