| Summary: | 碩士 === 正修科技大學 === 機電工程研究所 === 100 === The knee joint is a very complicated organ of human beings is responsible for load transmission and movement. There are about 1.5 million cases of knee replacement surgery worldwide and nearly 10,000 cases in Taiwan each year. When the basic knee movements are seriously affected by sports injuries or tissue degradation due to aging and influence the quality of life dramatically, then knee surgery is needed to be performed. The components of knee joint include femur, patella, tibia, fibula, meniscus, various ligaments and soft tissue.
Regardless of the degenerative, traumatic, and fatigue issues of knee problems, they all related to the impact to the knee joint during walking or running. It is necessary to explore the impact influence and shock vibration of the knee structure to improve problems.
The reverse engineering equipment, 3D white light scanner, is used to obtain the geometry of the plastic synthesis leg bones (manufactured by 3B Corporation, Germany). Studio package is utilized to patch up the missing part of the geometry. The repaired geometry is imported into Solid Works graphical software and combined with a variety of soft tissues including anterior cruciate ligament, posterior cruciate ligament, medial ligament, lateral ligament and meniscus. The density, Young's modulus, and poisson ratio of the A real person is then standing on the vibration test platform to measure the time response of ankle and knee joint under shock vibration. After comparing with experimental and analytical results, both show that the transmission of impact forces are reduced from ankle to knee joint. It also proves that the soft tissues such as meniscus, ligaments and muscles acted as vibration absorber to actually reduce the amplitude of impact vibration real human beings are inputted into the ANSYS package with the complete knee joint finite element model to perform impact force analysis, including modal analysis, dynamic response of single and continuous impact, stress and strain analysis, etc.
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