Computer-aided navigation method for accurate treatment of old zygomatic fracture

Abstract

The invention belongs to the technical field of computer-aided design, and discloses a computer-aided navigation method for accurate treatment of old zygomatic fracture. The method includes the following steps: based on 3D image construction and segmentation, preoperative CT data is input to computer-aided surgical design software for the 3D reconstruction and segmentation of a maxillofacial region, and main fractured bone segments are separated and named separately; surface marker points are created on the surfaces of the bone segments and positioned, there is at least one marker point on each bone segment, at least four markers are used for the whole zygomatic fracture, each bone segment is fused with the cylindrical marker points thereof, and data is imported into the surgical navigation design software and fused into a file to obtain a surface marker point positioning navigation plan; step-by-step control reduction is carried out on the healthy side data according to the midline image of the face to form a navigation reduction plan; and finally, an operation is carried out according to the navigation marker point positioning plan and the navigation reduction plan.

Description

technical field [0001] The invention belongs to the technical field of computer-aided design, in particular to a computer-aided navigation method for accurately treating old zygomatic fractures. Background technique [0002] At present, the existing technologies commonly used in the industry are as follows: In the midface, the prominent facial position of the zygomatic complex makes it frequently injured. Fractures of the zygomatic complex can lead to displacement of the zygoma and zygomatic arch, causing functional and aesthetic problems such as limited mouth opening and facial asymmetry. Surgical reduction and fixation of fresh fractures can correct most of these problems. However, if treatment is delayed or insufficient reduction can result in secondary deformities. Mild aesthetic concerns can be treated with allograft grafts, such as polyethylene. However, for severe deformities, the fracture line may need to be amputated and repositioned. [0003] For old zygomatic...

AI Technical Summary

Problems solved by technology

[0005] (1) Existing treatment of old zygomatic fractures, for severe deformity, it may be necessary to cut the fracture line and reposition, for old zygomatic fractures, due to fracture line dislocation and loss of normal anatomical landmarks formed by bone remodeling, it is very difficult Difficulty determining the correct position of the cheekbones

[0006] (2) Due to the lack of surgical reduction reference for old zygomatic fractures, accurate treatment is difficult

[0009] 1. The shape of the zygoma itself is irregular, and there are no obvious anatomical markers on its surface, and there is no obvious pore-like structure that can be located;

[0010] 2. Delayed treatment leads to dislocation of the fracture line and healing, and anatomical reduction cannot be achieved by matching the fracture line

The lack of anatomical marks directly leads to no clear reference for surgical reduction, and the traditional treatment is not effective

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