Page 320 - IJB-10-2

International

Journal of Bioprinting

RESEARCH ARTICLE
Parametric design and performance study of

continuous gradient triply periodic minimal
surface bone scaffold

Shuangyu Liu , Jinlong Feng , Fulong Zhang *, Weibo Jiang ,
1
1
2
1
Tatiana Mikhailovna Vasilieva , Ping Lu , and Sen Lu 1
3
4
1 College of Mechanical Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu, China
2 Department of Orthopaedics, The Second Hospital of Jilin University, Changchun, Jilin, China
3 Joint Institute for High Temperatures of Russian Academy of Sciences, Izhorskaya str., 13, Bd.2,
Moscow, Russia
4 College of Automotive Engineering, Yancheng Institute of Technology, Yancheng, Jiangsu, China

Abstract

Continuous gradient triply periodic minimal surface (TPMS) porous structure has
been proven to be one of the most suitable structures for bone implants due to
their excellent mechanical properties and high porosity. This study establishes
a parametric modeling method for continuous gradient TPMS structures and
optimizes the TPMS porous structure with a continuous gradient change in porosity.
Ti-6Al-4V continuous gradient TPMS porous structures were prepared using powder
bed fusion (PBF). The mechanical properties and permeability of the continuous
gradient TPMS porous structure were studied. The results indicate that the porosity
control parameter C for gradient continuous change follows a linear function, with
*Corresponding author: the porosity increasing linearly within the specified range of values. The influence of
Fulong Zhang the periodic parameter ω on the mechanical properties and permeability of different
(zhangfulong@ycit.edu.cn)
types of TPMS structures varies. The Gyroid continuous gradient structure aligns
Citation: Liu S, Feng J, Zhang F, more closely with the mechanical properties and permeability of bone scaffolds.
et al. Parametric design and
performance study of continuous Furthermore, a TPMS continuous gradient porous structure that is more suitable for
gradient triply periodic minimal trabecular bone implants was obtained through topology optimization design. A
surface bone scaffold. Int J Bioprint. bone implant model and object suitable for human trabecular bone were designed
2024;10(2):2306.
doi: 10.36922/ijb.2306 and printed, providing technical support for subsequent performance testing and
application research of bone implants.
Received: November 24, 2023
Accepted: January 19, 2024
Published Online: February 7, 2024
Keywords: Triply periodic minimal surface; Additive manufacturing; Bone scaffold;
Copyright: © 2024 Author(s). Mechanical properties and permeability
This is an Open Access article
distributed under the terms of the
Creative Commons Attribution
License, permitting distribution,
and reproduction in any medium, 1. Introduction
provided the original work is
properly cited. Bone, the hardest tissue in the human body, serves multiple essential functions, including
Publisher’s Note: AccScience body support, movement facilitation, hematopoiesis, and effective promotion of blood
Publishing remains neutral with circulation. Extensive bone injuries are typically caused by trauma, osteomyelitis, or
regard to jurisdictional claims in
published maps and institutional tumors. Medical studies have indicated that bone tissue loses its inherent capacity for
1
affiliations. repair when the size of the bone defect exceeds 30 mm. Consequently, interventional

Volume 10 Issue 2 (2024) 312 doi: 10.36922/ijb.2306