Rigid-body modeling of knee cartilage and meniscus using experimental pressure-strain curves. Issue 6 (26th April 2019)

• Record Type: Journal Article
• Authors: Wilson, S.; Hausselle, J.; Guess, T.M.; Gonzalez, R.V.
• Is Part Of: Computer methods in biomechanics and biomedical engineering. Volume 22:Issue 6(2019)
• Page Start: 574
• Page End: 584
• Publication Date: 2019-04-26
• Subjects: Biomechanics -- contact -- stress -- in silico; Biomechanics -- Data processing -- Periodicals; Biomedical engineering -- Periodicals; Biomechanics -- Periodicals; Biomedical Engineering -- methods -- Periodicals; Computing Methodologies -- Periodicals; 612.7
• DOI: 10.1080/10255842.2019.1569639
• Languages: English
• ISSNs: 1025-5842

Abstract

Abstract: Rigid-body knee models have gained popularity thanks to computational speed and ease of setup compared to finite element models—showing exciting potential for clinical patient-specific models in the future. However, Rigid-body studies in general have encountered difficulty in modeling cartilage and especially meniscus material properties, often relying on computationally costly optimization techniques. This paper presents two new methods to alleviate the difficulty—one to define model contact pressure and one to define meniscus internal forces—and is the first to our knowledge to use experimental pressure-strain curves from the literature to simulate cartilage and meniscus behavior in a rigid body model. This paper describes the methodology to derive the proof of concept model and preliminary results from a gait simulation based on ISO 14243-1.