Regular polyhedron porous filling structure calcaneus prosthesis and optimization design method thereof

Abstract

The invention discloses a design method of a regular polyhedron porous filling structure calcaneus prosthesis. The method specifically comprises the following steps that S1, a system model composed ofthe calcaneus, soft tissue and the ground is built; S2, porous structure modeling is carried out on the calcaneus model, and a calcaneus prosthesis model containing a regular polyhedron porous filling structure is obtained; S3, combinations of different regular polyhedron radiuses r and array distances d are formulated, and a plurality of regular polyhedron porous filling structure calcaneus prosthesis models are obtained; S4, finite element analysis is carried out on the models composed of the calcaneus prosthesis, the soft tissue and the ground in ABAQUS, and data such as strain energy, stress and displacement of the calcaneus prosthesis are obtained; and S5, the data such as the maximum strain energy, the maximum stress and the maximum displacement of the regular polyhedron porous filling structure calcaneus prosthesis models with different porosities are compared, and the optimal regular polyhedron porous filling structure calcaneus prosthesis optimization structure is obtained. The invention further provides the regular polyhedron porous filling structure calcaneus prosthesis.

Description

technical field [0001] The invention relates to an optimal design method, in particular to an optimal design method for a calcaneal prosthesis with a regular polyhedral porous filling structure. Background technique [0002] The calcaneus is the largest load-bearing tarsal bone in the foot and is therefore also extremely vulnerable to injury. Common forms of calcaneal injury include calcaneal fractures, and there are currently two main methods for the treatment of calcaneal fractures, namely surgical treatment and non-operative treatment. Among them, surgical treatment mainly includes: open reduction and internal fixation surgery, calcaneal prosthesis replacement surgery based on additive manufacturing technology. For calcaneal prosthesis replacement surgery, it is currently difficult to obtain the relevant mechanical properties of the calcaneal prosthesis during foot movement and complete the design of the calcaneal prosthesis through experimental methods. Contents of th...

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Problems solved by technology

For calcaneal prosthesis replacement surgery, it is currently difficult to obtain the relevant mechanical properties of the calcaneal prosthesis during foot movement and complete the design of the calcaneal prosthesis through experiments

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