METHOD OF RADIATION DOSE REDUCTION IN TRANSCUTANEOUS-OPEN INSTALLATION OF TRANSPEDICULAR SCREWS UNDER PARASPINAL MINI-ACCESS Russian patent published in 2017 - IPC A61B6/00 A61B17/56 

FIELD: medicine.

SUBSTANCE: invention relates to traumatology and neuro-orthopaedic surgery and can be applicable for dose reduction in transcutaneous-open installation of transpedicular screws in terms of paraspinal mini-access. Perform mid-paraspinal mini-access and percutaneous punctures. Perform under the control of the x-ray images an installation of the navigating spokes, cutting of internal thread by cannulated taps, installation of transpedicular screws. Installation starts on the left side of the patient, first install the right rostral navigating spoke which is guided via a separate skin puncture, then install the left caudal navigating spoke directly through mini-access, thus set navigating spokes are in miscellaneous position. Perform first 2–3 fluoroscopic images in the frontal and sagittal projections. Then by navigating spokes perform cutting with cannulated taps of pediculo-corporal bone channels and set transpedicular screws, and exercise this in the reverse order, namely first perform cutting with cannulated taps of pediculo-corporal bone channels along the set left caudal navigating spoke and introduce left caudal transpedicular screw, wherein the navigating spoke is removed in the moment of the initial introduction of the screw, then perform cutting with cannulated taps of pediculo-corporal bone channels along the set right rostral navigating spoke and introduce right rostral transpedicular screw, wherein the navigating spoke is removed in the moment of the initial introduction of the screw. Then install the next pair of navigating spokes and transpedicular screws wherein the installation is performed at the right side from the patient, first introduce the left rostral navigating spoke which is guided via a separate skin puncture, then install the right caudal navigating spoke directly through mini-access, Perform next 2-3 fluoroscopic images in the frontal and sagittal projections. Then along the installed right caudal navigating spoke perform cutting with cannulated taps of pediculo-corporal bone channel and install right caudal transpedicular screw, then along the installed left rostral navigating spoke perform cutting with cannulated taps of pediculo-corporal bone channel and install left rostral transpedicular screw.

EFFECT: method allows to reduce the number of intraoperative images to reduce x-ray exposure dose affecting the patient and medical staff.

3 cl, 1 tbl, 6 dwg