Wang Monan, Wang Lei, Li Pengcheng, Fu Yili
a Robotics Institute, Harbin University of Science and Technology , Harbin , China.
b State Key Laboratory of Robotics and System , Harbin Institute of Technology , Harbin , China.
Bioengineered. 2017 Jan 2;8(1):105-112. doi: 10.1080/21655979.2016.1227630. Epub 2016 Oct 3.
Understanding the hip joint surface contact stress distribution characteristics is helpful to determine hip joint biomechanical features and abnormal pathological behavior. Firstly, a 3-dimensional static hip joint biomechanical model is built using analytical method of model in order to study biomechanical properties including bearing area, stress distribution and the peak value of the contact stress of the femoral head, which reveals the relationship between the biomechanical properties and its geometric parameters. Secondly, based on the finite element analysis of the hip joint model, the contact stress distribution on the surface of femoral head is acquired under the condition of the different joint force and the acetabulum coverage rate. Finally, according to the evaluation of the femoral head surface stress and contact stress peak under different load distribution, accuracy and universality of the biomechanical model is verified.
了解髋关节表面接触应力分布特征有助于确定髋关节的生物力学特性及异常病理行为。首先，采用模型分析法构建三维静态髋关节生物力学模型，以研究包括股骨头的承载面积、应力分布及接触应力峰值等生物力学特性，揭示生物力学特性与其几何参数之间的关系。其次，基于髋关节模型的有限元分析，获取不同关节力和髋臼覆盖率条件下股骨头表面的接触应力分布。最后，根据不同载荷分布下股骨头表面应力及接触应力峰值的评估，验证生物力学模型的准确性和通用性。
