生物骨科材料与临床研究2011，Vol.8Issue(5)：12-15,4.DOI:10.3969/j.issn.1672-5972.2011.05.004
骨水泥椎体成形对老年胸腰椎终板支撑力的生物力学影响
Determine the effect of endplate on the distribution structural properties with vertrbroplasty
吴继功 1马华松 1邹德威 1白克文 1赵昌松 1赵卫东 2欧阳钧2
作者信息
- 1. 解放军306医院全军脊柱外科中心,北京,100101
- 2. 南方医科大学国家生物力学重点实验室,广东,广州,510510
- 折叠
摘要
Abstract
Objectives To determine the effect of endplate on the distribution structural properties with vertrbroplasty. Methods The bony endplates of 4 intact human osteoporotic disintegrating vertebrae ( T12~L4 )were tested . Indentation tests were performed at standardized test on the endplate of both contrast normal group and vertebriplasty with by using a 2.3mm diameter, hemispherical indenter with a test rate of 0.03 mm/s to a depth of 3 mm. The failure load and stiffness at each site were determined from the load-displacement curves. Repeated measures analyses were used to analyze the resulting data for variation in the anterior-posterior and lateral directions, as well as to determine the effect of vertebroplasty. Results For the contrast group endplates, both the failure load and stiffness varied significantly across the endplate surfaces, without the posterolateral regions being stronger and stiffeess than other except the central regions. The central regions is lowest. With vertebroplatsty endplate, the mean failure load and stiffness increased significantly with the posterolateral regions being weaker and lower than others. The central regions is strongest. Conclusion There was a significant effect of endplate with vertrbroplasty on the localstructural characteristics of the vertebral endplate.关键词
骨水泥/椎体成形/终板/生物力学Key words
Bone cemen/ Endplate/ Vertebroplasty分类
医药卫生引用本文复制引用
吴继功,马华松,邹德威,白克文,赵昌松,赵卫东,欧阳钧..骨水泥椎体成形对老年胸腰椎终板支撑力的生物力学影响[J].生物骨科材料与临床研究,2011,8(5):12-15,4.
