Internal fixed parameter optimization treatment individualized modeling method based on fracture healing process

Abstract

The invention discloses an internal fixed parameter optimization treatment individualized modeling method based on a fracture healing process. The method comprises the following steps that a fracturesite is scanned, modeling is performed on a fractured bone; an orthogonal experimental design method is adopted to combine and assemble different internal fixed parameters in a three-dimensional software, the finite element mesh generation is performed on a fractured bone model, a mechanical property value is assigned according to a gray value on the fractured bone of an internal fixation system;the assembly of different screws is carried out, and whole finite element mesh generation is carried out; a mechanical environment simulating the fractured bone is loaded and calculated, a stress on the internal fixation system and a healing result of the fracture are obtained, and then the fracture healing result is evaluated; the screw layout is updated, and the above steps are repeated to perform combined optimization on the screw layout The internal fixed parameter optimization treatment individualized modeling method based on the fracture healing process has the advantages that the errorcaused by manually dividing the cancellous bone and the bone cortex is avoided, and a basis is provided for the combined optimization selection of the internal fixed parameters of a bone fracture plate during the fracture treatment.

Description

technical field [0001] The invention relates to a personalized modeling method for internal fixation parameter optimization treatment based on a fracture healing process, and belongs to the technical field of bone healing prediction models. Background technique [0002] Using bone plate to fix the fracture site is one of the effective ways to treat fractures, but different internal fixation parameters have different effects on the stability of the system. In order to explore the influence of different internal fixation parameters on the stability, researchers at home and abroad A lot of related research has been done. In recent years, with the rapid development of computer technology and the complexity of experiments, the finite element method has been widely used as an important biomechanical research tool. However, when performing finite element analysis, the modeling of the internal fixation system At present, most studies use cylindrical models for simplification, and s...

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Problems solved by technology

In recent years, with the rapid development of computer technology and the complexity of experiments, the finite element method has been widely used as an important biomechanical research tool. However, when performing finite element analysis, the modeling of the internal fixation system At present, most studies use cylindrical models for simplification, and some studies use the results of CT scans to accurately model the shape of bones, but the assignment of bone mechanical properties uses the uniform assignment method

[0003] The research on the internal fixation system mainly studies the stability of the internal fixation system, mainly evaluates the stress of the internal fixation equipment and the displacement between the broken ends of the fracture, and lacks the evaluation of the parameters of the internal fixation system based on the healing process and healing results.

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