Modeling method of bone statistics model

Abstract

The invention provides a modeling method of a bone statistical model, which is characterized by comprising the following steps of: S1, acquiring a plurality of bone images and bone quality data; s2, performing grid processing on the plurality of skeleton images by using an image reconstruction technology to obtain a plurality of skeleton network models; and S3, sorting the plurality of skeleton network models, performing classification to obtain a skeleton template model and a skeleton sample model, and performing alignment and grid division to obtain a skeleton template model grid. And S4, performing deformation registration on the skeleton sample model and the skeleton template model grid to obtain a deformation-registered surface grid and a deformation-registered volume grid. And S5, allocating bone quality data to grid nodes on the surface grid subjected to deformation registration and the volume grid subjected to deformation registration to obtain a training sample model. And S6, performing principal component analysis on the training sample model by using a principal component analysis method to obtain a skeleton statistical model.

Description

technical field [0001] The invention relates to a modeling method of a bone statistical model. Background technique [0002] At present, some orthopedic implant devices, such as bone plates, intramedullary nails, spreaders, acetabular cups, etc., are designed based on a single or a limited number of bone model cases. A few typical cases do have more direct clinical significance, but because It is impossible to effectively evaluate whether the device is suitable for a specific population, so the design of the device cannot be promoted. [0003] In the current optimization design work involving finite element analysis equipment with bone models, a method of simulating the real bone mass distribution with an eggshell model is often used for the mesh material distribution of the bone model, that is, the outer mesh is cortical bone, and the corresponding bone density , the strength value is large, the inner mesh is cancellous bone, and the corresponding bone density and strength...

AI Technical Summary

Problems solved by technology

This method has the following problems. The average model is an average model obtained after registration of all sample bone models, and it is a single fixed model. A single fixed model is used to adapt to the fracture site where the anatomical structure is prone to change. Accuracy is still poor

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