人体骨盆生物力学三维光弹性的实验研究  

A experimental study on the biomechanics of the human pelvis by the three-dimensional photoelastics

作　　者：郭磊[1] 范广宇[1] 高鹏飞[2] 董本涵[2] 

机构地区：[1]中国医科大学第一临床学院骨科,沈阳110001 [2]中国航空工业沈阳发动机设计研究所

出　　处：《中华实验外科杂志》2001年第2期131-132,共2页Chinese Journal of Experimental Surgery

基　　金：国家教委基金资助项目 (教留司研 1 991 4 0 8)

摘　　要：目的　研究人体正常骨盆和髋臼发育不良骨盆的生物力学特征。方法　依据光弹性力学原理 ,应用光敏材料E 5 1环氧树脂制作人体骨盆三维光弹模型共 4套 ,模型加载 ,应力冻结 ,测量分析骨盆的应力分布及形态改变。结果　人体双腿站立时 ,正常及髋臼发育不良骨盆环的应力集中在I7、I8、S4 、A1、A2 等处 ;髋臼发育不良时髋臼内壁应力异常集中于髋臼上缘 ,A1∶A4 =6∶1。负重后正常骨盆髋臼外口呈“椭圆形”改变。结论　人体骨盆应力分布复杂 ;人体双腿站立负重时髋臼可发生形态改变 ;Objective To investigate the biomechanic characteristic of normal human pelvis and pelvis with development displasia of hip (DDH) by the three dimensional photoelastics. Methods Four photoelastic models of human pelvis were made by using light sensatory material with hypersensitivity E 51 epoxy resin. The weight was put on model and performed froze stress, and the distribution of model stress and morphorlogical change were observed. Results The stresses of human pelvic ring were concentrated on the parts, such as I 7, I 8, S 4, A 1, A 2. In DDH, stresses within acetabulum were concentrated on the parts of upper margin of acetabulum,such as A 1∶A 4=6∶1. In the loading pelvis, acetabular outlet became ellipse in shape. Conclusion Under standing condtion of double legs, stresses of human pelvic ring were complicated. In the loading pelvis, morphological changes of acetabulum occurred. In DDH, the abnormal concentration of stresses within pelvis leads to the development of osteoarthritis.

关 键 词：骨盆 生物力学 髋臼 三维光弹性模型 光敏材料 E-51环氧树脂 

分 类 号：R68[医药卫生—骨科学]