The effect of constitutive representations and structural constituents of ligaments on knee joint mechanics
(2018) In Scientific Reports 8.- Abstract
Ligaments provide stability to the human knee joint and play an essential role in restraining motion during daily activities. Compression-tension nonlinearity is a well-known characteristic of ligaments. Moreover, simpler material representations without this feature might give reasonable results because ligaments are primarily in tension during loading. However, the biomechanical role of different constitutive representations and their fibril-reinforced poroelastic properties is unknown. A numerical knee model which considers geometric and material nonlinearities of meniscus and cartilages was applied. Five different constitutive models for the ligaments (spring, elastic, hyperelastic, porohyperelastic, and fibril-reinforced... (More)
Ligaments provide stability to the human knee joint and play an essential role in restraining motion during daily activities. Compression-tension nonlinearity is a well-known characteristic of ligaments. Moreover, simpler material representations without this feature might give reasonable results because ligaments are primarily in tension during loading. However, the biomechanical role of different constitutive representations and their fibril-reinforced poroelastic properties is unknown. A numerical knee model which considers geometric and material nonlinearities of meniscus and cartilages was applied. Five different constitutive models for the ligaments (spring, elastic, hyperelastic, porohyperelastic, and fibril-reinforced porohyperelastic (FRPHE)) were implemented. Knee joint forces for the models with elastic, hyperelastic and porohyperelastic properties showed similar behavior throughout the stance, while the model with FRPHE properties exhibited lower joint forces during the last 50% of the stance phase. The model with ligaments as springs produced the lowest joint forces at this same stance phase. The results also showed that the fibril network contributed substantially to the knee joint forces, while the nonfibrillar matrix and fluid had small effects. Our results indicate that simpler material models of ligaments with similar properties in compression and tension can be used when the loading is directed primarily along the ligament axis in tension.
(Less)
- author
- Orozco, Gustavo A. LU ; Tanska, Petri ; Mononen, Mika E. ; Halonen, Kimmo S. and Korhonen, Rami K.
- publishing date
- 2018-12-01
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Scientific Reports
- volume
- 8
- article number
- 2323
- pages
- 15 pages
- publisher
- Nature Publishing Group
- external identifiers
-
- pmid:29396466
- scopus:85041849524
- ISSN
- 2045-2322
- DOI
- 10.1038/s41598-018-20739-w
- language
- English
- LU publication?
- no
- additional info
- Funding Information: The authors appreciate the support of the University of Eastern Finland and Aalborg University to undertake this study. This project has received funding from the Doctoral Programme in Science, Technology and Computing (SCITECO), University of Eastern Finland; the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No 713645; the European Research Council (ERC) under the European Union’s Seventh Framework Programme (FP/2007–2013)/ERC Grant Agreement No 281180 and the European Union’s Horizon 2020 research and innovation programme (grant agreement No 755037); Academy of Finland (grant No 286526, 305138); and Sigrid Juselius Foundation. CSC-IT Center for Science Ltd is acknowledged for providing FE software. Mikko Venäläinen, Ph.D. and Mimmi Liukkonen, M.Sc. are acknowledged for technical support. Publisher Copyright: © 2018 The Author(s).
- id
- 793ef4bc-6b44-4360-9b19-41b9806a93f5
- date added to LUP
- 2022-06-08 11:51:53
- date last changed
- 2024-04-04 06:45:48
@article{793ef4bc-6b44-4360-9b19-41b9806a93f5,
abstract = {{<p>Ligaments provide stability to the human knee joint and play an essential role in restraining motion during daily activities. Compression-tension nonlinearity is a well-known characteristic of ligaments. Moreover, simpler material representations without this feature might give reasonable results because ligaments are primarily in tension during loading. However, the biomechanical role of different constitutive representations and their fibril-reinforced poroelastic properties is unknown. A numerical knee model which considers geometric and material nonlinearities of meniscus and cartilages was applied. Five different constitutive models for the ligaments (spring, elastic, hyperelastic, porohyperelastic, and fibril-reinforced porohyperelastic (FRPHE)) were implemented. Knee joint forces for the models with elastic, hyperelastic and porohyperelastic properties showed similar behavior throughout the stance, while the model with FRPHE properties exhibited lower joint forces during the last 50% of the stance phase. The model with ligaments as springs produced the lowest joint forces at this same stance phase. The results also showed that the fibril network contributed substantially to the knee joint forces, while the nonfibrillar matrix and fluid had small effects. Our results indicate that simpler material models of ligaments with similar properties in compression and tension can be used when the loading is directed primarily along the ligament axis in tension.</p>}},
author = {{Orozco, Gustavo A. and Tanska, Petri and Mononen, Mika E. and Halonen, Kimmo S. and Korhonen, Rami K.}},
issn = {{2045-2322}},
language = {{eng}},
month = {{12}},
publisher = {{Nature Publishing Group}},
series = {{Scientific Reports}},
title = {{The effect of constitutive representations and structural constituents of ligaments on knee joint mechanics}},
url = {{http://dx.doi.org/10.1038/s41598-018-20739-w}},
doi = {{10.1038/s41598-018-20739-w}},
volume = {{8}},
year = {{2018}},
}