Twenty years after surgery for spinal bulge, it usually does not recur. Because the spinal bulge is simply an anatomical abnormality, that is, a blister bulges out on the surface of the body because of the dura mater, and it is not a factor of tumor nature, not divided into benign and malignant, and it is not a factor of cerebral vascular nature, not divided into hemorrhage or ischemia, but it is a blister-like alteration, which only needs to be removed from the blister, and the dura mater will be stitched accordingly, basically, as long as the healing is good at a later stage, there is no intracranial infection, there is no delayed healing, etc., generally there will be no recurrence. healing, etc., there is usually no recurrence. Unless there are some special circumstances, such as the combination of other diseases, such as hydrocephalus or sacral cysts and other diseases, may cause reexpansion, but the probability of this is very small, and basically does not occur clinically. If it is determined that there is, then the appropriate tests need to be actively carried out in order to clarify.