Channel positioning method and system for inserting screws into the sacroiliac joint and fixing the S2 vertebral body

Abstract

The present invention proposes a channel positioning method and system for inserting screws into the sacroiliac joint to fix the S2 vertebral body. The method includes the following steps: S1: receiving pelvic CT scan data including at least the sacroiliac joint; S2: according to the pelvic CT scan data, Three-dimensional reconstruction of the pelvis based on the data to obtain a three-dimensional pelvis; S3: Transparently display the three-dimensional pelvis to form a transparent three-dimensional pelvis; S4: Based on the posture of the three-dimensional pelvis when the human body is standing, rotate the three-dimensional pelvis around the vertical direction and rotate During the process, the projection direction is perpendicular to the vertical direction, and the projection planes of the S2 vertebral body safety zone of the sacroiliac joints on both sides are rotated to the maximum extent, and the position of the overlapping part is determined, so as to locate the screw fixation channel.

Description

technical field [0001] The invention relates to the technical field of digital analysis, in particular to a channel positioning method and system for fixing S2 vertebral body with screws inserted into the sacroiliac joint. Background technique [0002] Percutaneous sacroiliac joint screw fixation is one of the methods for the treatment of unstable pelvic fractures. It mainly solves the stability of the posterior pelvic ring. Traditional percutaneous sacroiliac joint screw fixation is performed under X-ray fluoroscopy guidance. Adequate, sometimes resulting in screw insertion into the sacral foramen or perforation of the sacral body, making screw placement less safe and accurate. According to literature reports, the incidence rate of screw placement under X-ray guidance is 2.8-13.2%. Anatomically, the sacral nerve and venous plexus are located in the front of the sacral foramen and the sacrum. Improper screw placement can cause damage to these structures and cause serious co...

AI Technical Summary

Problems solved by technology

[0002] Percutaneous sacroiliac joint screw fixation is one of the methods for the treatment of unstable pelvic fractures. It mainly solves the stability of the posterior pelvic ring. Traditional percutaneous sacroiliac joint screw fixation is performed under X-ray fluoroscopy guidance. Adequate, sometimes resulting in screw insertion into the sacral foramen or perforation of the sacral body, making screw placement less safe and less accurate

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