Mechanical analysis of knee dynamic finite element model

doi:10.3969/j.issn.2095-4344.2013.22.002

Abstract

Abstract:

BACKGROUND: Knee joint has the characteristics of complex anatomical structure and active diversity. The development of the biomechanical research of human knee joint is slow as in vivo experiments cannot be conducted. The experiments performed on corpse do not have the normal physiological environment of the human body, so the results are not accurate.
OBJECTIVE: To investigate the force condition on different parts of the knee joint with engineering finite element analysis method in non-invasive and in vivo conditions.
METHODS: CT image was used to build dynamic three-dimensional finite element model of the knee joint. The force on the anterior cruciate ligament, posterior cruciate ligament and patellofemorel joint was analyzed in the range of 0°-90° of knee joint.

RESULTS AND CONCLUSION: According to our study we found that the anterior cruciate ligament had the largest tension when the knee joint flexed at 0°, then gradually decreased. There was no significant change when the knee joint flexed at 50° to 90°. The posterior cruciate ligament had the opposite changing trend: there was no significant change when the knee joint flexed between 0° to 50°, and then gradually increased, and the posterior cruciate ligament had the largest tension when the knee joint flexed at 90°. The analysis of the stress experienced on patellofemorel joint showed the stress on the patellofemorel joint was gradually increased along with the increasing of the angle. The dynamic three-dimensional finite element model of the knee joint was able to simulate the motion of knee joint. Studying the stress experienced on different parts of the human knee joint is an important tool for biomechanics analysis in orthopedics.

Key words: bone and joint implants, artificial prosthesis, knee joint, three-dimension, dynamic finite element, mechanical analysis, biomechanics, anterior cruciate ligament, posterior cruciate ligament, patellofemoral joint, stress, model, provincial grants-supported paper

CLC Number:

R318

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R318

Hou Bo, Wang Yi, Shen Yu-hui. Mechanical analysis of knee dynamic finite element model[J]. Chinese Journal of Tissue Engineering Research, 2013, 17(22): 3998-4004.

Figures/Tables 4

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