Three-dimensional mesh skeleton model averaging method oriented to bone plate design

Abstract

The invention discloses a three-dimensional mesh skeleton model averaging method oriented to bone plate design. In the method, a series of 'averaging' three-dimensional mesh skeleton models can be obtained from a large number of skeleton data and provide basis for seriation design of the bone plates. The three-dimensional mesh skeleton model averaging method includes the following steps: performing rigid body registration on three-dimensional mesh skeleton models; selecting one three-dimensional skeleton model as a template skeleton, and performing non-rigid registration on the template skeleton with other skeletons; further performing mesh deformation on the basis of a Laplacian coordinate on the template skeleton; replacing all the deformed template skeletons for the skeletons; performing principal component analysis and clustering analysis on the processed skeletons; calculating averageness of each type of skeletons. A three-dimensional processing technology is applied to processing and analyzing of the three-dimensional mesh skeleton models, the bone plates made of average skeletons can be better fitted with the fractured bones, surgical time can be shortened, surgical quality can be improved, and injures of surgery to patients can be alleviated.

Description

technical field [0001] The invention belongs to the field of geometry processing, and in particular relates to a three-dimensional mesh bone model averaging method for bone plate design. Background technique [0002] If the patient has a fracture, if the plaster and splint cannot be fixed, it must be reduced through open surgery and fixed with a bone plate. Bone plate internal fixation is one of the main methods for treating fractures. It can fix broken bones, enable early active and painless functional activities of affected limbs, and provide a good biological and mechanical environment for fracture repair and rapid recovery of joint function. , so that the fracture heals during functional activities, and the function is restored during fracture repair. Therefore, bone plate is widely used clinically. Since the main function of the bone plate is to fix the broken bone, this requires the bone plate to fit closely with the bone. During the operation, the doctor cuts open ...

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Problems solved by technology

This leads to large trauma, heavy intraoperative bleeding, and long operation time, which can easily lead to complications such as neurovascular injury, infection, and fracture nonunion.

[0003] At present, the design of domestic bone plates is mostly completed by manufacturers through the measurement of less bone data and combined with clinical experience. This process will lead to the design of bone plates that are often only suitable for a small number of people, but cannot fit the bone shape of most people; Foreign advanced companies (such as Stryker Corporation of the United States) have bone data analysis software, but there are two problems. First, these software are their core technologies and will not appear in the market; second, their bone database Mainly European and American bones, so the bone plates produced based on these bones are not suitable for Chinese bones

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