Abstract
Objective: To discuss a method to establish a three-dimensional model of healthy human knee joint, which can be used for further knee joint biomechanics analysis and simulation. Methods: CT scan and medical image three-dimensional reconstruction software (Mimics) were used to obtain the knee joint three-dimensional finite element model (FEM) according to reverse engineering theory. Results: FEM of knee joint with complete bone structure was established by Mimics. Conclusion: Three-dimensional FEM was established according to CT images exports as IGES file. The model can be used for knee joint biomechanics finite element analysis to provide references and proposals for the clinical diagnoses of knee joint illness, and the design of artificial knee joint prosthesis.
Highlights
With the weight-bearing and motor function, knee joint is the most complex joint in human body
We introduce a method to establish three-dimensional finite element model of human knee joint based on CT images and conduct a simple analysis on the model to verify its accuracy
We established the model of a healthy human knee joint, and conducted biomechanics analysis to it
Summary
With the weight-bearing and motor function, knee joint is the most complex joint in human body. It is hurt or caught various diseases due to the mechanical environment and movement condition it is located. Current studies consider that the mechanism of osteoarthritis no matter caused by sports injuries or cartilage failure is the improper stress distribution in the joint [1]-[4]. With the assistance of finite element analysis, we can stimulate movement of joint in various conditions, and by this way we can acknowledge the stress distribution in different parts. To establish a relatively complete finite element model of the health human knee joint with proper mechanical properties and anatomy structure is the basis for further re-
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