AccScience Publishing / IJB / Online First / DOI: 10.36922/ijb.8577
RESEARCH ARTICLE
Early Access

Computational investigation of a 3D-printed osteochondral interface scaffold with comprehensive interfacial mechanical properties

Kaicheng Yu1,3 Qiang Gao1,3* Yanling Mi1,3 Yifeng Yao1,3 Zexue Lin1,3 Min Zhu2,3 Peng Zhang1,3 Swee Leong Sing4* Lihua Lu1,3*
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1 School of Mechatronics Engineering, Harbin Institute of Technology, Harbin 150001, China
2 School of Electrical Engineering and Automation, Harbin Institute of Technology, Harbin, China
3 Chongqing Research Institute of HIT, Chongqing 400000, China
4 Department of Mechanical Engineering, National University of Singapore, 117575, Singapore
Submitted: 17 January 2025 | Accepted: 12 February 2025 | Published: 12 February 2025
© 2025 by the Author(s). This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution 4.0 International License ( https://creativecommons.org/licenses/by/4.0/ )
Abstract

Osteoarthritis is a highly prevalent rheumatic musculoskeletal disorder that usually ends up with physiological malfunction and psychological hurt. Although many tissue engineering approaches have been proposed to provide a prospective strategy for tissue regeneration purposes, the improper mechanical properties of proposed scaffolds are unable to satisfy mechanical demands within the joint fully. This paper presents computational investigation and structural design for creating the osteochondral interface scaffold. A finite element method (FEM) based mechanics simulation model was proposed to evaluate the effect of load-bearing forces on various scaffolds, by which the stress distribution in the biomimetic osteochondral interface can be acquired. Several structures of osteochondral interface scaffolds were fabricated and demonstrated a controllable mechanical property. The proposed biomimetic osteochondral interface manifested comprehensive mechanical properties, of which the bonding strength, compressive strength, and shear strength respectively reached 128 kPa, 277 kPa, and 276 kPa.

Keywords
Mechanical properties
Computational modeling
Osteochondral interface
Extrusion-based 3D printing
Funding
The authors deeply acknowledge the fanatical support from the key research and development Plan project of Heilongjiang Province [grand No. 2022ZX02C22]; the science and technology innovation talent project on manufacturing industry of Harbin, [grand No. 2023HBRCGD011, 2022CXRCGD029]; the Interdisciplinary Research Foundation of HIT [grand No. IR2021223]; the Sponsored by Natural Science Foundation of Chongqing [grand No. CSTB2023NSCQ-MSX0822].
Conflict of interest
Swee Leong Sing is the Editorial Board Member of the journal, but did not in any way involve in the editorial and peer-review process conducted for this paper, directly or indirectly. The authors declare they have no competing interests.
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International Journal of Bioprinting, Electronic ISSN: 2424-8002 Print ISSN: 2424-7723, Published by AccScience Publishing