Spinal cord cavernosity (SM) and submicrocephalic herniation malformation (CM), as well as adult spinal cord cord cord tethering syndrome (ATCS), are highly correlated. It can be said that the former (SM) is the result and the latter is the cause, and that both causes are related to congenital development, CM being an obstruction and compression of the greater occipital foramen area, and ATCS being tension and pulling of the lower end of the spinal cord. Some patients are purely CM so only the upper occipital foramen reconstruction needs to be implemented, some patients are purely ATCS oriented and only the terminal filament release below needs to be loosened, while some patients have problems with both upper and lower, doing one of them cannot solve the problem, and it is likely that a second surgery will be implemented within 1-2 years after coming, so in order to avoid the trouble of secondary surgery and to comprehensively solve the etiological problem, some patients need to have upper and lower To avoid secondary surgery and to fully solve the problem of etiology, some patients need to do it together. At the same time, our clinical practice has confirmed that spinal cord end filament release has different degrees of improvement on back pain, shoulder-thoracic back convulsions, leg weakness and urinary and fecal problems, because the release regulates spinal cord tension and helps improve spinal fluid medullary microcirculation. Moreover, the terminal filament release at the lower part (three inches above the caudal vertebra) is a minimally invasive procedure that has been optimized and simplified in many ways. The incision is small, the bone and joint ligaments are not damaged, and the terminal filament is not a nerve structure, so there is no problem in cutting and releasing it, so it is neurologically non-invasive.