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

已经研究了通过ta骨肌腱 - 屈服结节（PTT）复合物对撞击负荷的衰减。这项研究中使用的材料是PTT复合物和the肌肌腱，从猪后腿取，具有三个不同的胫骨结节骨化阶段。它们的骨化阶段由体重（20,100和200kgf）表示。使用拆分 - 霍普金森压力棒技术在室温下对PTT复合物和pat肌肌腱进行冲突测试。在施加撞击负荷之前，在对PTT和pat肌肌腱的两种测试中均施加了预期载荷。 PTT复合物的实验载荷传递比随体重的增加而增加，而与体重无关。较大的体重或高度骨化的样品似乎显示出较低的负载传输比。 Young的tellar肌腱模量的显着变化，并没有发现胫骨结节中软骨增长的骨化进展的增加。由于该复合物的每个部分的材料特性和几何形状被认为随其生长而变化，因此，对具有不同骨化阶段的PTT复合物的影响反应进行了理论分析，并考虑了应力波的衰减特性，以预测负载传递比的预测以及受到最大应变的截面。为此，在其X射线图像和BMD测量的协助下制成了代表复合物的机械行为的简单模型，并根据一维波传播理论进行了分析。还进行了与冲击响应分析中使用的相同模型的静态分析。影响反应分析很好地预测了在增长过程的不同阶段受伤的位置，而静态分析无法预测这种临床情况。较少的