Simulating Knee-Stress Distribution Using a Computed Tomography-Based Finite Element Model: A Case Study

Author:

Watanabe Kunihiro1ORCID,Mutsuzaki Hirotaka23,Fukaya Takashi4,Aoyama Toshiyuki5,Nakajima Syuichi6,Sekine Norio7,Mori Koichi6

Affiliation:

1. Department of Radiology, Shin-Oyama City Hospital, Oyama-shi 323-0827, Tochigi, Japan

2. Center for Medical Sciences, Faculty of Health Sciences, Ibaraki Prefectural University of Health Sciences, Ami 300-0394, Ibaraki, Japan

3. Department of Orthopedic Surgery, Ibaraki Prefectural University of Health Sciences Hospital, Ami 300-0331, Ibaraki, Japan

4. Department of Physical Therapy, Faculty of Health Sciences, Tsukuba International University, Tsuchiura 300-0051, Ibaraki, Japan

5. Department of Physical Therapy, Ibaraki Prefectural University of Health Sciences, Ami 300-0394, Ibaraki, Japan

6. Department of Radiological Sciences, Ibaraki Prefectural University of Health Sciences, Ami 300-0394, Ibaraki, Japan

7. Department of Radiological Sciences, Graduate School of Human Health Sciences, Tokyo Metropolitan University, Arakawa 116-8551, Tokyo, Japan

Abstract

This study aimed to evaluate the mechanism of progression involved in knee osteoarthritis (OA). We used the computed tomography-based finite element method (CT-FEM) of quantitative X-ray CT imaging to calculate and create a model of the load response phase, wherein the greatest burden is placed on the knee joint while walking. Weight gain was simulated by asking a male individual with a normal gait to carry sandbags on both shoulders. We developed a CT-FEM model that incorporated walking characteristics of individuals. Upon simulating changes owing to a weight gain of approximately 20%, the equivalent stress increased extensively in both medial and lower leg aspects of the femur and increased medio-posteriorly by approximately 230%. As the varus angle increased, stress on the surface of the femoral cartilage did not change significantly. However, the equivalent stress on the surface of the subchondral femur was distributed over a wider area, increasing by approximately 170% in the medio-posterior direction. The range of equivalent stress affecting the lower-leg end of the knee joint widened, and stress on the posterior medial side also increased significantly. It was reconfirmed that weight gain and varus enhancement increase knee-joint stress and cause the progression of OA.

Publisher

MDPI AG

Subject

Physical Therapy, Sports Therapy and Rehabilitation,Orthopedics and Sports Medicine,Histology,Rheumatology,Anatomy

Reference35 articles.

1. Ackroyd, R.T. (1997). Finite Element Methods for Particle Transport, Research Studies Press.

2. On the finite element method;Numer. Math.,1968

3. Evaluation of vertebral bone strength with a finite element method using low dose computed tomography imaging;Nakanowatari;J. Orthop. Sci.,2022

4. Prediction of compression fracture risk of lumber vertebra using a X-ray CT-based finite element method;Okubo;Jpn. Acad. Health Sci.,2013

5. Prediction of proximal femur strength using a CT-based nonlinear finite element method: Differences in predicted fracture load and site with changing load and boundary conditions;Bessho;Bone,2009

Cited by 2 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3