摘要
3月龄SD大鼠去势6个月后,采用三点弯曲试验描记肢骨的负荷-变形曲线,计算肢骨最大负荷和致断应力,与对照组比较。反映股骨组成材料力学性能的致断应力,去势后显著降低。反映整根股骨力学性能的最大负荷,去势后虽有减小,但无显著性差异。结果表明:雌性大鼠去势后股骨组成材料的力学性能受到显著损害,而整根股骨的力学性能.因几何形状的优化,无明显变化。
Three-point bending test was carried out to determine the femoral load-deformntion curve when the SD rats'bilateral ovariectomies were performed six months ago. Compared to stham-operated control rats,the breaking stress indicating the biomechanical propery of femoral material was significantly decreased,the maximum lood reflecting was slightly diminished.The results show:(1)the biomechanical property of ovariectomized rats femora material was significanthy impaired.(2)attributed to the superior change of geometric configuration,the biomechanical quality of femoral diaphysis has no apparently change.
出处
《医用生物力学》
CAS
CSCD
1996年第1期51-53,共3页
Journal of Medical Biomechanics