METHOD FOR RECONSTRUCTION OF SPINAL CANAL AND POSTERIOR STABILIZATION OF LUMBAR SPINE Russian patent published in 2021 - IPC A61B17/70 

FIELD: medicine; orthopedics; neurosurgery.

SUBSTANCE: invention relates to medicine, namely to orthopedics and neurosurgery, it can be used for the reconstruction of the spinal canal and posterior stabilization of the lumbar spine. Median-paraspinal access, bone autograft sampling, and decompression of the spinal canal through the split spinous process are performed. The thoracolumbar fascia is dissected along a line 5 mm laterally to the spinous process. The tip of the spinous process is isolated subperiosteally. The bone autograft is sampled, splitting one-fourth of the spinous process in the transverse direction. A longitudinal splitting of the spinous process is performed. Decompression of the spinal canal is performed. The split spinous process is restored with an M-shaped pre-concave titanium microplate with a bone autograft in the bed of its central part. The ends of the microplate are fixed with micro-screws to the lateral surfaces of the split spinous process; the supraspinous ligament is placed over the autograft. The bone autograft is fixed with a micro-screw to the microplate; the spinous ligament above the autograft is fixed with ligatures for the holes of the microplate. After decompression of the spinal canal through the split spinous process, surgical access is continued along the midline above the spinous process; the surface sheet of the thoracolumbar fascia is dissected and flaked from the underlying paraspinal muscles. The vertebral-motor segment is fixed with transpedicular screws between the groups of selected muscles. Through the obtained access, resection of the upper articular process of the vertebra, discectomy and interbody spinal fusion by cage are performed.

EFFECT: method provides for a possibility of reconstruction of the spinal canal and posterior stabilization even in unstable forms of stenosis, as well as without violating the integrity of the supraspinous ligament due to autograft and the use of microplate.

5 cl, 9 dwg