基于膝关节三维模型的髌股关节动力学特性研究

目的构建有效的膝关节三维模型以计算髌股关节动力学参数。方法基于CT图像处理和CAD技术, 重建包括股骨下端、胫骨上端及髌骨的膝关节的骨骼三维模型,并定义髌股关节运动起重要作用的股四头肌直线模型、韧带及其它软组织的非线性弹性纤维束模型,以股四头肌肉力为输入控制变量。结果构造出一个有效的膝关节三维模型。结论该模型可以有效的计算髌股关节动力学参数。

Study on the kinetics of patello-femoral joint based on a three-dimensional knee model

Objective The three-dimensional knee model has been developed to compute the kinetics of patella-femoral joint. Methods The three-dimensional skeletal model, including superior end of tibia, inferior end of femur and patella, has been developed based on CT image processing and CAD technology. In addition, quadriceps has been defined as straight-line model with ligaments and other soft tissues defined as non-linear elastic fiber model. Quadriceps forces were used as input control variable. Results Such an effective model has been built up successfully in this way. Conclusion It is useful for some kinetic parameters in gait of patella-femoral joint to be computed based on this model.