SGER: Analysis, Modeling and Determination of the Three-Dimensional Behavior of the Human Knee Joint in Deep Flexion

0448377 Hefzy首次对膝关节在跪姿和深蹲时的生物力学进行了评估，当时膝关节最大屈曲超过120 o，最大屈曲达到165 o，并确定了十字韧带在此类活动中的作用。拟议工作的新奇还包括使用动态模型开发和验证跪姿和深蹲的3-D解剖学数学模拟，该模型再次首次：i）考虑深蹲期间发生的“大腿和小腿”接触，ii）包括涉及胫股关节和髌股关节的3个身体节段，iii）考虑韧带结构和四头肌，腿筋和腓肠肌肌肉力，以及iv）采用关节表面的真实分段数学表示。 东京电机大学智能机械工程教授Tadaatsu Satomi博士的参与为研究带来了国际层面，他开发了一种电容传感器来测量接触压力。Satomi博士将提供传感器和所有外围仪器，并将输出与使用K-Scan传感器测量的接触应力进行比较。 这项研究的结果将有助于为开发允许最大屈曲的全膝关节置换术建立设计指南。研究活动将通过提供硕士一级研究生的教育和培训以及本科生参与研究，加强人力资源开发。

0448377HefzyFor the first time an evaluation is to be made of the biomechanics of the knee during kneeling and during a deep squat when the knee is maximally flexed past 120o and up to 165o, and to determine the role of the cruciate ligaments during such activities. The novelty of the proposed work also includes the development and validation of a 3-D anatomical mathematical simulation for kneeling and deep squatting using a dynamic model that, again for the first time, i) accounts for the "thigh and calf" contact that occurs during deep squat, ii) includes 3 body segments involving the tibio-femoral and patello-femoral joints, iii) accounts for ligamentous structures, and quadriceps, hamstring and gastrocnemius muscular forces, and iv) employs realistic piecewise mathematical representation of the articular surfaces. An international dimension is brought to the research by the participation of Dr. Tadaatsu Satomi, Professor of Intelligent Mechanical Engineering, Tokyo Denki University, who has developed an electro-capacitance sensor to measure contact pressure. Dr. Satomi is to provide the sensor and all peripheral instrumentation and compare outputs with the contact stresses measured using the K-Scan sensors. Results from this research will help to establish design guidelines for the development of total knee replacements that allow maximum flexion. The research activities will enhance human resource development by providing for the education and training of a graduate student at the masters' level, and the participation of undergraduate students in research.