Design and Optimization Lattice Endoprosthesis for Long Bones: Manufacturing and Clinical Experiment

The article is devoted to the construction of lattice endoprosthesis for a long bone. Clinically, the main idea is to design a construction with the ability to improve bone growth. The article presents the algorithm for such a design. The construction should be produced by additive manufacturing. Su...

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Bibliographic Details
Published in:Materials 2020-03, Vol.13 (5), p.1185
Main Authors: Bolshakov, Pavel, Raginov, Ivan, Egorov, Vladislav, Kashapova, Regina, Kashapov, Ramil, Baltina, Tatyana, Sachenkov, Oskar
Format: Article
Language:English
Subjects:
Additive manufacturing
Algorithms
Animal welfare
Bioethics
Biomedical materials
Bones
Boundary conditions
Construction
Design optimization
Experiments
Finite element method
Geometry
Influence functions
Joint surgery
Lasers
Lattice design
Mechanical properties
Parameters
Quality
Stainless steel
Stress concentration
Stress distribution
Stress state
Transplants & implants
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Summary:The article is devoted to the construction of lattice endoprosthesis for a long bone. Clinically, the main idea is to design a construction with the ability to improve bone growth. The article presents the algorithm for such a design. The construction should be produced by additive manufacturing. Such an approach allows using not only metallic materials but also ceramics and polymers. The algorithm is based on the influence function as a method to describe the elementary cell geometry. The elementary cell can be described by a number of parameters. The influence function maps the parameters to local stress in construction. Changing the parameters influences the stress distribution in the endoprosthesis. In the paper, a bipyramid was used as an elementary cell. Numerical studies were performed using the finite element method. As a result, manufacturing construction is described. Some problems for different orientations of growth are given. The clinical test was done and histological results were presented.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma13051185