METHOD OF MINIMALLY INVASIVE SURGICAL TREATMENT OF PATIENTS WITH LUMBAR STENOSES Russian patent published in 2023 - IPC A61B17/70 A61F2/44 

FIELD: medicine; traumatology; neurosurgery.

SUBSTANCE: invention can be used for minimally invasive surgical treatment of patients with lumbar stenosis. Preliminary interfascial anesthesia of the erector spinae muscle and infiltration of the surgical access area with local anesthetics are performed. The patient is positioned using a lumbar bolster or a powered operating table in the right lateral position with the contralateral leg fixed in a flexed position. The cage is installed with preliminary filling with allograft or osteoplastic material; then anterolateral installation of titanium screws into the vertebral bodies is carried out. At the level of L1-L2, or L2-L3, or L3-L4, or L4-L5, titanium screws are inserted bicortically with the insertion point at a distance of 8 mm from the level of the endplate at an angle of 30 degrees, followed by their blocking with a titanium rod. At the L5-S1 level, either one titanium screw is inserted monocortically at an angle of 45 degrees into the caudal vertebra, or two titanium screws are inserted monocortically at an angle of 45 degrees into the caudal and cranial vertebrae. Then layer-by-layer suturing of the surgical wound is carried out with the application of a cosmetic intradermal suture. At the L5-L6 level, either one titanium screw is inserted monocortically at an angle of 45 degrees into the caudal vertebra, or two titanium screws are inserted monocortically at an angle of 45 degrees into the caudal and cranial vertebrae.

EFFECT: method reduces the invasiveness of the operation and blood loss, the risk of complications, increases the efficiency of surgical treatment of patients with lumbar stenosis due to preliminary anesthesia of the interfascial muscle, the erector spinae infiltration of the surgical access area with local anesthetics and the peculiarities of screw insertion.

2 cl, 5 dwg, 3 ex