METHOD FOR POSTERIOR MINI-INVASIVE COMBINED TRANSPEDICULAR INTERFACET FIXATION ON LUMBAR SPINE Russian patent published in 2022 - IPC A61B17/70 

FIELD: medicine.

SUBSTANCE: invention relates to medicine, namely to neurosurgery, traumatology and orthopedics, and can be used for posterior minimally invasive stabilization after decompression of nerve structures in spinal canal stenosis on the lumbar spine. On the side of the most pronounced pain syndrome, an incision is made 30–40 mm long, 20–30 mm lateral to the midline. Surgical approach is performed by sequential myodilation with distractors, each subsequent diameter of which is larger than the previous one. A retractor is inserted. Decompression is performed with posterior spinal fusion with a cage with height of 8 to 14 mm and length of 25 to 33 mm and transpedicular fixation with screws 40–55 mm long and 5–7 mm in diameter on the side of the operative approach. A retractor is inserted from the opposite side of the first approach in a projection of the corresponding intervertebral joint through a similar incision after myodilation. Cartilage tissue is removed from adjacent surfaces of the joint and an interfacet wedge-shaped implant is installed, which is fixed to both articular surfaces.

EFFECT: method provides reducing the amount of blood loss and duration of the operation, reduced intensity of postoperative pain syndrome, reduced time for recovery of working capacity, creation of an additional point of spondylodesis formation by reducing the volume of dissection of soft tissues and muscles when performing a surgical approach.

1 cl, 3 ex