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Impact Response Analysis of Patella-Patellar Tendon-Tibial Tuberosity Complex

髌骨-髌腱-胫骨结节复合体冲击响应分析

基本信息

批准号：
10650076
负责人：
TANABE Yuji
金额：
$ 2.24万
依托单位：
Niigata University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (C)
财政年份：
1998
资助国家：
日本
起止时间：
1998 至 1999
项目状态：
已结题

项目摘要

Attenuation of impact load through patella-patellar tendon-tibial tuberosity (PTT) complex has been investigated with respect to the progress of ossification of growing cartilage in tibial tuberosity. Materials used in this study were PTT complexes and patellar tendons taken from porcine hind legs with three different stages of ossification of tibial tuberosity. Their stages of ossification were represented by body weight (20,100 and 200kgf). Impact tensile tests on PTT complexes and patellar tendons were performed at room temperature using the split-Hopkinson pressure bar technique. In both tests on PTT and patellar tendons pretensile loads were applied to them just before an application of impact load. The experimental load transmission ratio of PTT complexes increased with an increase of pretension, independent of body weight. Larger body weight, or highly ossified specimen appeared to show lower load transmission ratio. Significant change in Young's modulus of patellar tendon with … More an increase of pretension as well as the progress of ossificationt of growing cartilage in tibial tuberosity was not found. Since material properties and geometry of each section of the complex were considered to be varied with its growth, the impact responses of PTT complexes with different stages of ossification were theoretically analysed with the consideration of attenuation property of stress wave for the prediction of load transmission ratio as well as the section subjected to maximum strain. To this end, simple models representing mechanical behaviour of the complexes were made with the assistance of their X-ray images and BMD measurements, and the analyses were performed based on the one-dimensional wave propagation theory. Static analyses of the same models as used in the impact response analyses were also performed. The impact response analyses well predicted the location of injuries in different stages of growing process, while static analyses could not predict such clinical situation. Less

研究了冲击载荷通过髌骨-髌骨肌腱-胫骨结节（PTT）复合体的衰减与胫骨结节中生长软骨的骨化进程的关系。本研究使用的材料是取自胫骨结节骨化三个不同阶段的猪后腿的PTT复合体和髌骨肌腱。它们的骨化阶段由体重（20、100和200 kgf）表示。采用分离式霍普金森压杆技术在室温下对PTT复合体和髌腱进行冲击拉伸试验。在PTT和髌腱的两项测试中，在施加冲击载荷之前对其施加预拉伸载荷。PTT复合物的实验负荷传递率随预张力的增加而增加，与体重无关。体重较大或高度骨化的样本似乎显示出较低的载荷传递比。髌腱杨氏模量的显著变化 ...更多信息胫骨粗隆内生长软骨的预张力增加和骨化进程未被发现。由于复合体各节段的材料性质和几何形状被认为是随其生长而变化的，从理论上分析了不同骨化阶段PTT复合体的冲击响应，并考虑了应力波的衰减特性，预测了载荷传递比承受最大应变的截面。为此，简单的模型表示的配合物的力学行为的援助下，他们的X射线图像和BMD测量，并进行分析的基础上的一维波传播理论。还对冲击响应分析中使用的相同模型进行了静态分析。冲击响应分析能很好地预测不同生长阶段的损伤部位，而静态分析不能预测这种临床情况。少