A bending model for assessing relative stiffness and strength of orthopaedic fixation constructs.
3D printing
Bending
Fixation
Fracture
Nitinol
Orthopaedic
Journal
Clinical biomechanics (Bristol, Avon)
ISSN: 1879-1271
Titre abrégé: Clin Biomech (Bristol, Avon)
Pays: England
ID NLM: 8611877
Informations de publication
Date de publication:
29 Oct 2023
29 Oct 2023
Historique:
received:
25
07
2023
revised:
06
10
2023
accepted:
26
10
2023
medline:
11
11
2023
pubmed:
11
11
2023
entrez:
10
11
2023
Statut:
aheadofprint
Résumé
The purpose of this study is to develop a simple and reproducible bending model that is compatible with a wide range of orthopaedic fixation devices and 3D printed spacers. A robust 4-point bending model was constructed by securing sawbones blocks with different orthopaedic fixation device constructs. Stress strain curves derived from a fundamental mechanics model were used to assess the effect of bone density, type of hardware (staple vs intramedullary beam), the use of dynamic compression, orientation of staples (dorsal vs plantar), and the use of 3D printed titanium spacers. The high throughput 4-point bending model is simple enough that the methods can be easily repeated to assess a wide range of fixation methods, while complex enough to provide clinically relevant information. It is recommended that this model is used to assess a large initial set of fixation methods in direct and straightforward comparisons.
Sections du résumé
BACKGROUND
BACKGROUND
The purpose of this study is to develop a simple and reproducible bending model that is compatible with a wide range of orthopaedic fixation devices and 3D printed spacers.
METHODS
METHODS
A robust 4-point bending model was constructed by securing sawbones blocks with different orthopaedic fixation device constructs. Stress strain curves derived from a fundamental mechanics model were used to assess the effect of bone density, type of hardware (staple vs intramedullary beam), the use of dynamic compression, orientation of staples (dorsal vs plantar), and the use of 3D printed titanium spacers.
FINDINGS
RESULTS
The high throughput 4-point bending model is simple enough that the methods can be easily repeated to assess a wide range of fixation methods, while complex enough to provide clinically relevant information.
INTERPRETATIONS
CONCLUSIONS
It is recommended that this model is used to assess a large initial set of fixation methods in direct and straightforward comparisons.
Identifiants
pubmed: 37948989
pii: S0268-0033(23)00266-8
doi: 10.1016/j.clinbiomech.2023.106135
pii:
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
106135Informations de copyright
Copyright © 2023 Elsevier Ltd. All rights reserved.
Déclaration de conflit d'intérêts
Declaration of Competing Interest SA had done consulting work for Enovis who manufactures the devices used in this manuscript. The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: Samule Adams reports a relationship with Envois that includes: consulting or advisory.