北京生物医学工程2011，Vol.30Issue(1)：92-95,4.DOI:10.3969/j.issn.1002-3208.2011.01.19
蠕变特性:正常与坏死股骨头对比分析
The Contrast Analysis of Creep Properties Between Normal and Necrotic Head of Femur's
贾乐生 1赤仁杰 1朴成东 2马洪顺3
作者信息
- 1. 沈阳医学院奉天医院,沈阳110024
- 2. 吉林大学第二医院,长春130031
- 3. 吉林大学南岭校区工程力学系,长春130022
- 折叠
摘要
Abstract
The study on the creep mechanical properties of normal and avascular necrosis of the femoral head( ANFH) is necessary for artificial joint research and joint replacement. In this paper, we measured the creep values of femur. Sixteen experimental fresh femurs were taken from 8 normal male people, aged from 22 to 28 years old, and from 8 male patients, aged from 28 to 56 years old, after artificial joint replacement. Under temperature ( 36. 5 ± 0. 5 ) ℃ , each specimen was tested with Daojin electronical experimental machine when the acceleration of stress was 0. 5MPa/s. In total 7200s period, one hundred experimental data were collected and used for drawing the creep curves and processing the creep parameter. The experiments indicated the creep velocities of all samples were quicker in the early 600s period, and it became slow later until immovably at 7200s. During 7200s, the maximum creep value of pathological femoral head was 0. 61％ , that was lower than 0. 85％ of the normal femoral head( P ＜ 0. 05 ) . It is proved that the creep parameter changes after femoral head femoral head is necrotic.关键词
病态/股骨头/蠕变/对比分析分类
医药卫生引用本文复制引用
贾乐生,赤仁杰,朴成东,马洪顺..蠕变特性:正常与坏死股骨头对比分析[J].北京生物医学工程,2011,30(1):92-95,4.
