METHOD OF LAMINOPLASTY FOR PRIMARY SPINAL CORD TUMORS Russian patent published in 2023 - IPC A61B17/70 

FIELD: medicine; spinal surgery,; neurosurgery; oncology.

SUBSTANCE: invention can be used in the surgical treatment of primary spinal cord tumors of both extramedullary and intramedullary localization. Access to the spinal canal is provided while preserving the posterior musculoskeletal complex. The paraspinal muscles are separated along, at the minimum possible distance from the spinous process, the posterior wall of the spinal canal is exposed, and an osteotomy of the vertebral arches is performed at an angle of 30–40 degrees relative to the sagittal plane by drilling using a high-speed drill. The yellow ligaments are dissected at the upper and lower levels of the osteotomy of the arches, and the posterior supporting complex is removed as a single block, preserving its ligamentous apparatus. After removal of the posterior support complex, a durotomy is performed using a needle with an outer diameter of 29G–33G. The tumor is then resected. After tumor resection, the dura mater is sutured and osteoplastic reconstruction of the spinal canal is performed using the previously removed posterior support complex. Before reconstruction, plates are installed on the arches and the base of the spinous process, which are fastened together with 2–3 screws passing through the base of the spinous process. After reimplantation of the previously removed posterior supporting complex, the loose part of each plate is fixed with screws to the interarticular part of the arches or the base of the facet joint, after which the ligamentous apparatus of the posterior supporting complex, including the interspinous and supraspinous ligaments, is sutured in layers.

EFFECT: method ensures increased efficiency of treatment and reduced risk of complications by creating the most favorable conditions for performing the necessary manipulations on the spinal canal and performing the safest resection with minimal surgical trauma.

1 cl, 7 dwg, 2 ex