Article (Scientific journals)
Coupling biomechanical models of implants with biodegradation models: A case study for biodegradable mandibular bone fixation plates.
Ansoms, Pieter; Barzegari, Mojtaba; Vander Sloten, Jos et al.
2023In Journal of the Mechanical Behavior of Biomedical Materials, 147, p. 106120
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Keywords :
Humans; Fracture Fixation, Internal/methods; Biomechanical Phenomena; Mandible/surgery; Bone Plates; Bone Screws; Absorbable Implants; Corrosion models; Finite element analysis; Fracture fixation; Medical implants; Metallic biomaterials
Abstract :
[en] In fracture fixation, biodegradable implant materials are an interesting alternative to conventional non-biodegradable materials as the latter often require a second implant removal surgery to avoid long-term complications. In this study, we present an in silico strategy to design/study biodegradable metal implants focusing on mandibular fracture fixation plates of WE43 (Mg alloy). The in silico strategy is composed of an orchestrated interaction between three separate computational models. The first model simulates the mass loss of the degradable implant based on the chemistry of Mg biodegradation. A second model estimates the loading on the jaw plate in the physiological environment, incorporating a phenomenological dynamic bone regeneration process. The third model characterizes the mechanical behavior of the jaw plate and the influence of material degradation on the mechanical behavior. A sensitivity analysis was performed on parameters related to choices regarding numerical implementation and parameter dependencies were implemented to guarantee robust and correct results. Different clinical scenarios were tested, related to the amount of screws used to fix the plate. The results showed a lower initial strength when more screw holes were left open, as well as a faster decrease over time in strength due to the increased area available for surface degradation. The obtained degradation results were found to be in accordance with previously reported data of in vivo studies with biodegradable plates. The combination of these three models allows for the design of patient-specific biodegradable fixation implants able to deliver the desired mechanical behavior tuned to the bone regeneration process.
Disciplines :
Engineering, computing & technology: Multidisciplinary, general & others
Author, co-author :
Ansoms, Pieter;  Biomechanics Section, Department of Mechanical Engineering, KU Leuven, Leuven, Belgium. Electronic address: pieter.ansoms@kuleuven.be.
Barzegari, Mojtaba;  Biomechanics Section, Department of Mechanical Engineering, KU Leuven, Leuven, Belgium. Electronic address: m.barzegari.shankil@tue.nl.
Vander Sloten, Jos;  Biomechanics Section, Department of Mechanical Engineering, KU Leuven, Leuven, Belgium. Electronic address: jos.vandersloten@kuleuven.be.
Geris, Liesbet  ;  Université de Liège - ULiège > Département d'aérospatiale et mécanique > Génie biomécanique
Language :
English
Title :
Coupling biomechanical models of implants with biodegradation models: A case study for biodegradable mandibular bone fixation plates.
Publication date :
November 2023
Journal title :
Journal of the Mechanical Behavior of Biomedical Materials
ISSN :
1751-6161
eISSN :
1878-0180
Publisher :
Elsevier, Oxford, Gb
Volume :
147
Pages :
106120
Peer reviewed :
Peer Reviewed verified by ORBi
European Projects :
HE - 101088919 - INSTant CARMA - In Silico Trials for Cartilage Regenerative Medicine Applications
Funders :
Union Européenne [BE]
Commentary :
Copyright © 2023 Elsevier Ltd. All rights reserved.
Available on ORBi :
since 27 February 2024

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