基于CT灰度值赋予材料属性的马拉松运动员髋关节有限元模型建立及其应力分析  

Establishment and stress analysis of a finite element model of a marathon runner′s hip joint based on material properties given by CT gray value

作　　者：陈诺 邱兴[2] 汪帝 崔博棋 常晓丹[1] Chen Nuo;Qiu Xing;Wang Di;Cui Boqi;Chang Xiaodan(Department of Radiology,Zhongshan Hospital,Dalian University,Dalian 116000,China;Department of Orthopedics,Zhongshan Hospital,Dalian University,Dalian 116000,China;Department of Radiology,Qiqihar First Hospital,Qiqihar 161000,China;Zhongshan Clinical College of Dalian University,Dalian 116000,China)

机构地区：[1]大连大学附属中山医院放射科,大连116000 [2]大连大学附属中山医院骨科,大连116000 [3]齐齐哈尔市第一医院放射科,齐齐哈尔161000 [4]大连大学中山临床学院,大连116000

出　　处：《中华医学杂志》2022年第9期679-682,共4页National Medical Journal of China

摘　　要：本研究基于CT灰度值赋予材料属性方法建立了一名马拉松运动员髋关节有限元模型,分析其在单脚站立时髋关节生物力学情况。研究结果发现在骨盆模型中应力集中于弓状线、坐骨大切迹、耻骨梳及髋臼区;在股骨模型中应力集中于股骨头、股骨颈内侧及股骨干区。应力的传导由骶髂关节经弓状线传递至臼顶,在股骨头一侧由股骨颈内侧向小转子下方传递至股骨干内侧,另一侧由股骨颈上侧传递至股骨干外侧。最大主应力分布于髋臼顶后上方(7.22 MPa)和股骨头后上方(6.68 MPa)。模型位移程度在髂骨上缘1~3 mm,并沿股骨轴向下逐渐减小,髋关节处位移0.1~0.3 mm。In this study,a finite element model of the hip joint of a marathon runner was established based on the method of assigning material properties by CT gray value,and the biomechanics of the hip joint were analyzed when standing on one foot.The results of the study demonstrated that the stress was concentrated in the arcuate line,the greater sciatic notch,the pubic comb,and the acetabular region in the pelvis model;in the femoral model,the stress was concentrated in the femoral head,medial side of femoral neck and femoral shaft.The stress is transmitted from the sacroiliac joint to the acetabular dome through the arcuate line,on one side of the femoral head,from the medial side of the femoral neck to the lower side of the lesser trochanter to the medial side of the femoral shaft,and on the other side from the upper side of the femoral neck to the lateral side of the femoral shaft.The maximum principal stress was distributed in the posterior superior of the acetabular roof(7.22 MPa)and the posterior superior of the femoral head(6.68 MPa).The displacement of the model was about 1 to 3 mm at the upper edge of the ilium,and gradually decreased along the femoral axis,and the displacement at the hip joint was about 0.1 to 0.3 mm.

关 键 词：运动医学 髋关节 有限元 马拉松 生物力学 材料属性 

分 类 号：R684[医药卫生—骨科学] G822.8[医药卫生—外科学]