Linear and quasi-linear viscoelastic characterization of ankle ligaments

Citation
Jr. Funk et al., Linear and quasi-linear viscoelastic characterization of ankle ligaments, J BIOMECH E, 122(1), 2000, pp. 15-22
Citations number
33
Categorie Soggetti
Multidisciplinary
Journal title
JOURNAL OF BIOMECHANICAL ENGINEERING-TRANSACTIONS OF THE ASME
ISSN journal
01480731 → ACNP
Volume
122
Issue
1
Year of publication
2000
Pages
15 - 22
Database
ISI
SICI code
0148-0731(200002)122:1<15:LAQVCO>2.0.ZU;2-P
Abstract
The objective of this study was to produce linear and nonlinear viscoelasti c models of eight majorj ligaments in the human ankle/foot complex for use in computer models of the lower extremity. The ligaments included in this s tudy were the anterior talofibular (ATaF), anterior tibiofibular (ATiF), an terior tibiotalar (ATT), calcaneofibular (CF), posterior talofibular (PTaF) , posterior tibiofibular (PTiF), posterior tibiotalar (PTT), and tibiocalca neal (TiC) ligaments. Step relaxation and ramp tests were performed. Back-e xtrapolation was used to correct for vibration effects and the error introd uced by the finite rise time in step relaxation tests. Ligament behavior wa s found to be nonlinear viscoelastic, but could be adequately modeled up to 15 percent strain using Fung's quasilinear viscoelastic (QLV) model. Failu re properties and the effects of preconditioning were also examined. [S0148 -0731(00)01001-3].