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Finite element contact analysis of a human sagittal knee joint

Lookup NU author(s): Dr Zaoyang Guo

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Abstract

Articular cartilage is a vital component of human knee joints by providing a low-friction and wear-resistant surface in knee joints and distributing stresses to tibia. The degeneration or damage of articular cartilage will incur acute pain on the human knee joints. Hence, to understand the mechanism of normal and pathological functions of articular cartilage, it is very important to investigate the contact mechanics of the human knee joints. Experimental research has difficulties in reproducing the physiological conditions of daily activities and measuring the key factors such as contact-stress distributions inside knee joint without violating the physiological environment. On the other hand, numerical approaches such as finite element (FE) analysis provide a powerful tool in the biomechanics study of the human knee joint. This article presents a two-dimensional (2D) FE model of the human knee joints that includes the femur, tibia, patella, quadriceps, patellar tendon, and cartilages. The model is analyzed with dynamic loadings to study stress distribution in the tibia and contact area during contact with or without articular cartilage. The results obtained in this article are very helpful to find the pathological mechanism of knee joint degeneration or damage, and thus guide the therapy of knee illness and artificial joint replacement.


Publication metadata

Author(s): Peng XQ, Liu G, Guo ZY

Publication type: Article

Publication status: Published

Journal: Journal of Mechanics in Medicine and Biology

Year: 2010

Volume: 10

Issue: 2

Pages: 225-236

Print publication date: 01/01/2010

ISSN (print): 0219-5194

ISSN (electronic): 1793-6810

Publisher: World Scientific Publishing

URL: http://dx.doi.org/10.1142/S0219519410003423

DOI: 10.1142/S0219519410003423


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