| Summary: | 博士 === 國立中山大學 === 機械與機電工程學系研究所 === 103 === The hinge joint is movable joints in the human leg connecting the elbow, knee, ankle, finger and toe joints. Among hinge joints, Tibiofemoral (TF) joint has complex joint structure with six degrees of freedom. Thus, it is important to analyzed tibiofemoral joint throughly in order to understand other moving joint of human being. The exo-prosthesis of the knee depends only on the femoral polode. Conversely, the endo-prosthesis of the knee relies upon the TF condylar surface and the slip ratio variation, without needing to consider the femoral polode.
However, femoral polode is difficult to understand if the contact joint surface and slip are described by moving polode of linkage mechanism. Conversely, the contact joint surface and slip cannot be described if the femoral polode is described by moving polode of linkage mechanism. Therefore, the endo-prosthesis design can be more suitable for human but it is difficult to achieve if the contact joint surface cannot be correspond with femoral polode.
There are many difficulties to achieve these goals. Firstly, the joint structure includes femoral polode and femoral condylar radius, etc. Therefore, it is too complicated to describe the anterior/posterior cruciate ligament for mechanical analysis. Moreover, the different cycles of flexion-extension and body weight can be produced by gait cycle.
Therefore, the purpose of this study is to explore the planar kinematic and kinetic mechanism so that the joint surface can be correspond with femoral polode. The objective functions include the line shape of the joint surface, femoral polode and slip and factors, the length of bar, the anterior/posterior cruciate ligament and gait, etc. the main objective of this study is to assistance the people with some knee disease such as osteoarthritis or joint surface repair techniques.
Finally, that tibiofemoral joint analysis is as a basic foundation, we also explored the correlation between the tibiofemoral joint and the finger joint. Firstly, the finger joint design method is similar to tibiofemoral joint. Moreover, to support people with osteoarthritis.
In addition, the pain of osteoarthritis is sometime from stress abrasion of tibiofemoral joint. Therefore, the sensitivity analysis of factors such as Hertz contact stress is also discussed to understand the main influencing factors and the gait location of maximum Hertz contact stress.
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