The peripheral soft tissues should not be ignored in the finite element models of the human knee joint

In finite element models of the either implanted or intact human knee joint, soft tissue structures like tendons and ligaments are being incorporated, but usually skin, peripheral knee soft tissues, and the posterior capsule are ignored and assumed to be of minor influence on knee joint biomechanics...

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Bibliographic Details
Published in:Medical & biological engineering & computing 2018-07, Vol.56 (7), p.1189-1199
Main Authors: Beidokhti, Hamid Naghibi, Janssen, Dennis, van de Groes, Sebastiaan, Verdonschot, Nico
Format: Article
Language:English
Subjects:
Aged
Biomechanics
Biomedical and Life Sciences
Biomedical Engineering and Bioengineering
Biomedicine
Cadavers
Computer Applications
Finite Element Analysis
Finite element method
Human Physiology
Humans
Imaging
Joint Instability - physiopathology
Kinematics
Knee
Knee Joint - physiology
Ligaments
Ligaments - physiology
Mathematical analysis
Mathematical models
Models, Biological
Original
Original Article
Radiology
Range of Motion, Articular - physiology
Reproducibility of Results
Rotation
Skin
Soft tissues
Tendons
Tendons - physiology
Tissues
Weight-Bearing
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Summary:In finite element models of the either implanted or intact human knee joint, soft tissue structures like tendons and ligaments are being incorporated, but usually skin, peripheral knee soft tissues, and the posterior capsule are ignored and assumed to be of minor influence on knee joint biomechanics. It is, however, unknown how these peripheral structures influence the biomechanical response of the knee. In this study, the aim was to assess the significance of the peripheral soft tissues and posterior capsule on the kinematics and laxities of human knee joint, based on experimental tests on three human cadaveric specimens. Despite the high inter-subject variability of the results, it was demonstrated that the target tissues have a considerable influence on posterior translational and internal and valgus rotational laxities of lax knees under flexion. Consequently, ignoring these tissues from computational models may alter the knee joint biomechanics.
ISSN:0140-0118
1741-0444
DOI:10.1007/s11517-017-1757-0