天津科技大学学报2025，Vol.40Issue(6)：67-75,9.DOI:10.13364/j.issn.1672-6510.20240042
几何特征对长骨生物力学响应的影响
Influence of Geometric Characteristics on Biomechanical Response of Long Bone
摘要
Abstract
Based on the computed tomography(CT)images of volunteers'lower limbs which meet the characteristic of 50th percentile male in China,a finite element model of lower limb long bones was established,and the experimental reconstruc-tion was carried out to validate the effectiveness of the model with reference to the dynamic three-point bending test of ca-daver long bones in this current study.Based on the developed model,the effects of geometric length,long bone type,and whether bone marrow is considered in modeling on the biomechanical response of long bones were studied.The results showed that compared with the long bones of the lower limbs of the 5th percentile female,the long bones of the 50th per-centile male were found to have stronger toughness when impacted.At the same time,the two ends of the long bone are wider than the central part for long bones,and the cross section of the middle part of the long bone is similar to a triangle,stress concentration occurred when it was impacted.Therefore,the two ends of the long bone had stronger impact resistance than the central part,and the femur had better impact resistance and the highest strength than the tibia.Compared with the solid structure femoral model with cancellous bone filling in the marrow cavity,the hollow structure femoral model had weaker impact resistance,but the femur had better toughness.In the future model construction process,the influence of bone marrow on the biomechanical response of long bones needs to be considered.关键词
下肢长骨/有限元模型/几何特征/生物力学响应Key words
long bone of lower limb/finite element model/geometric characteristic/biomechanical response分类
医药卫生引用本文复制引用
崔世海,张城铭,李海岩,吕文乐,阮世捷..几何特征对长骨生物力学响应的影响[J].天津科技大学学报,2025,40(6):67-75,9.基金项目
国家重点研发计划项目(2018YFC0807203-1) （2018YFC0807203-1）
