Application of the anatomical repositioning technique of the vertebral plate in microdiscectomy for intraspinal tumors Intraspinal tumors, also known as spinal cord tumors, are a general term that includes primary tumors or metastatic tumors occurring on the spinal cord itself and on various tissues in the spinal canal that are in close proximity to the spinal cord such as the dura mater, nerve roots, blood vessels, fat, and other tissues. The annual incidence of primary intradural tumors is 2.5-10/100,000 population. Intradural tumors can occur at any age, but are more common in the 20s and 50s. Intradural tumors include epidural, extramedullary subdural, and intramedullary tumors. Unlike intracranial tumors with different pathological nature, intradural tumors are mostly benign and have a good prognosis after total surgical resection. The current conventional surgical approach is posterior midline approach, sublaminar stripping of paraspinal muscles and ligaments, bilateral resection of the diseased vertebral plate and upper and lower vertebral plates to reveal the tumor. Traditional surgery extensively destroys the skin, subcutaneous tissue, muscles, supraspinous ligaments, interspinous ligaments, spinous processes, bilateral vertebral plates, small joints, and part of the capsules of the small joints in the posterior aspect of the spine. This traditional surgical approach has been used for decades with positive results. However, not only is the surgery traumatic, but postoperative complications such as spinal instability, pain and limited spinal mobility may occur. Wang Zhong, Department of Neurosurgery, Inner Mongolia Autonomous Region People’s Hospital With the advancement of modern imaging technologies such as CT and MRI, the diagnosis of intravertebral canal lesions has become more and more accurate, and precise three-dimensional diagnosis can be achieved before surgery, which provides a guarantee for precise positioning of the operation, and the concept of minimally invasive spine surgery has been carried out in intravertebral spine tumor surgery. The concept of minimally invasive spine surgery has been carried out in intravertebral tumor surgery. At the same time, micro-milling drill grinds a narrow groove from the narrow part of the vertebral plate to remove the whole vertebral plate spinous complex, and then applies microscopic technology to fully resect the tumor, and then resets the vertebral plate spinous complex, implantation, and vertebral canal shaping method to treat the primary tumors in the vertebral canal after the tumor is resected, and adopts a new technique of vertebral plate spinous reset instead of the traditional surgical method of removing a wide range of posterior spinal structures. Compared with conventional open surgery, minimally invasive surgery provides a full field of vision and less damage to the spinal cord, nerve roots, blood vessels and other tissues, preserves the endogenous stabilization system as much as possible, greatly reduces the changes to the spinal biomechanics, maintains postoperative spinal stability, which in turn prevents degenerative changes in the spinal column, spinous ligamentous complexes are preserved, and posterior spinal dynamical stabilizing structures are maintained (preservation of ligament- The spinous ligament complex is preserved, and the posterior dynamic stabilization structure of the spine is maintained (preservation of the ligament-nerve-muscle neural reflex system is conducive to the fine regulation of the activities of the lumbar and dorsal regions); the preservation of the spinous ligament complex prevents or reduces the formation of the laminectomy membrane, and avoids or relieves the compression of the laminectomy membrane to the spinal cord and the nerve root; the surgical operation is simple, and there is little damage to the body; the resection of tumors with different lengths is satisfied, and there is no obvious limitation of the length of the plate transplantation. It reduces the posterior spinal deformity as well as the adhesion between spinal cord and muscle tissues, achieves anatomical reset, and is closer to the physiological state. The surgery is safe and effective, with small incision, less trauma, less bleeding, and fast postoperative recovery; meanwhile, due to the ease of postoperative care, the patient recovers quickly after the operation, reduces the long-term complication, alleviates the patient’s pain, and the patient’s burden by decreasing the hospital stay with a good social and economic benefit. (Neurosurgery Department, Wang Zhong)