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Computational model-based probabilistic analysis of in vivo material properties for ligament stiffness using the laxity test and computed tomography

Authors
 Kyoung-Tak Kang  ;  Sung-Hwan Kim  ;  Juhyun Son  ;  Young Han Lee  ;  Heoung-Jae Chun 
Citation
 JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE, Vol.27(12) : 183, 2016 
Journal Title
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN MEDICINE
ISSN
 0957-4530 
Issue Date
2016
MeSH
Adult ; Anterior Cruciate Ligament/diagnostic imaging ; Biomechanical Phenomena ; Computer Simulation* ; Femur/diagnostic imaging ; Finite Element Analysis ; Humans ; Image Processing, Computer-Assisted ; Knee Joint/diagnostic imaging* ; Male ; Materials Testing* ; Monte Carlo Method ; Posterior Cruciate Ligament/diagnostic imaging ; Probability ; Range of Motion, Articular ; Tibia/diagnostic imaging ; Tomography, X-Ray Computed
Keywords
Anterior Cruciate Ligament ; Finite Element Model ; Posterior Cruciate Ligament ; Intraclass Correlation Coefficient ; Knee Laxity
Abstract
The objective of this paper was to evaluate in vivo material properties in order to address technical aspects of computational modeling of ligaments in the tibiofemoral joint using a probabilistic method. The laxity test was applied to the anterior-posterior drawer under 30° and 90° of flexion with a series of stress radiographs, a Telos device, and computed tomography. Ligament stiffness was investigated using sensitivity analysis based on the Monte-Carlo method with a subject-specific finite element model generated from in vivo computed tomography and magnetic resonance imaging data, subjected to laxity test conditions. The material properties of ligament stiffness and initial ligament strain in a subject-specific finite element model were optimized to minimize the differences between the movements of the tibia and femur in the finite element model and the computed tomography images in the laxity test. The posterior cruciate ligament was the most significant factor in flexion and posterior drawer, while the anterior cruciate ligament primarily was the most significant factor for the anterior drawer. The optimized material properties model predictions in simulation and the laxity test were more accurate than predictions based on the initial material properties in subject-specific computed tomography measurement. Thus, this study establishes a standard for future designs in allograft, xenograft, and artificial ligaments for anterior cruciate ligament and posterior cruciate ligament injuries.
Full Text
https://link.springer.com/article/10.1007%2Fs10856-016-5797-z
DOI
10.1007/s10856-016-5797-z
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Radiology (영상의학교실) > 1. Journal Papers
Yonsei Authors
Kim, Sung Hwan(김성환) ORCID logo https://orcid.org/0000-0001-5743-6241
Lee, Young Han(이영한) ORCID logo https://orcid.org/0000-0002-5602-391X
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/152538
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