【摘要】 目的 针对传统个性化足部矫形器械设计依赖复杂模型导致的计算成本高、周期长问题，以个性化矫形垫为例，提出一种高效解决方案。方法 基于患者CT数据建立骨骼与软组织简化为均匀材料的足部有限元模型，仿真与实测峰值误差为3.59%。利用该模型分析后跟楔形角、足弓支撑高度、弹性模量参数对足底压力的影响。通过材料挤出(material extrusion, MEX)3D打印制造矫形垫。结果 矫形垫设计时间缩短80%。参数化设计表明，穿戴10°楔形角度矫形鞋垫可使后足外翻角度被矫正至正常值(5°),梯度模量设计降低局部压力峰值27.6%,有效优化压力分布。50例患者临床测试显示，舒适度评分达4.79/5分。结论 简化模型显著降低了建模成本与计算需求，支撑足部矫形器械快速迭代设计；参数化分析结合3D打印的方案在精准矫正畸形、提升舒适度等方面具有综合优势。更多还原

【Abstract】 Objective To address the high computational cost and long cycle time of traditional personalized foot orthopedic instruments due to reliance on complex models, this study proposes an efficient solution. Methods A finite element model of the foot was established based on CT data from the patient, which simplified bones and soft tissues into uniform materials. The peak error between simulation and measurement was only 3.59%. This model was used to analyze the effects of parameters such as heel wedge angle, arch support height, and elastic modulus on plantar pressures. Insoles were manufactured through material extrusion(MEX) three-dimensional(3D) printing. Results Design time was reduced by 80%. Parametric design demonstrated that a 10° wedge-shaped insole corrected eversion to the normal angle(5°), while the gradient modulus design reduced localized peak pressure by 27.6%, effectively optimizing pressure distribution. Clinical testing on 50 patients yielded a comfort score of 4.79 out of 5. Conclusions The simplified model significantly reduces modeling costs and computational requirements, supporting rapid iterative design of foot orthopedic devices. The combination of parameterization and 3D printing offers comprehensive advantages in accurately correcting deformities and improving comfort.更多还原