基于最优拉丁超立方设计的糖尿病足鞋垫优化设计

目的 提出一种鞋材弹性模量与厚度联合优化设计糖尿病足鞋垫的方法，以降低足底压力和软组织内部应力。方法 通过逆向工程方法建立足部有限元模型，基于足底压力分布特征划分鞋垫压力区域，采用有限元法对接触力学进行研究，为优化过程中调整不同区域内材料的弹性模量和鞋垫前后足厚度奠定基础，使用最优拉丁超立方设计得到最优参数组合。结果 设计的鞋垫增加约37.55%的足底接触面积，跖骨区和足跟区的压力峰值分别降低15.07%、36.96%,足跟处软组织内部应力降低20.83%,足底筋膜张力降低约60%。结论 所提出的方法可用于设计定制鞋垫，设计的个性化鞋垫具有更大的接触面积和降低糖尿病足底溃疡的良好潜力。

Optimization Design of Diabetic Shoe Insoles Based on Optimal Latin Hypercube Design

Objective To propose a method for optimizing the design of diabetic foot insoles by combining the elastic modulus and thickness of footwear to reduce plantar pressure and internal stress in soft tissues. Methods A finite element model of The foot was established using reverse engineering techniques. Orthotic pressure regions were identified based on the characteristics of plantar pressure distributions. Contact mechanics were studied using the finite element method to lay the foundation for adjusting the elastic modulus of the materials and the thickness of the forefoot and rearfoot insoles in different regions during the optimization process. The optimal parameter combination was obtained using an optimal Latin hypercube design. Results The plantar contact area of the designed insole increased by approximately 37.55%, and the peak pressures in the metatarsal and heel regions were reduced by 15.07% and 36.96%, respectively. The internal stress in the soft tissues of the heel decreased by 20.83%. Tension in the plantar fascia decreased by 60%. Conclusions The proposed method can be used for designing customized insoles, and such designed personalized insoles have a greater contact area, with great potential in reducing diabetic foot ulcers.