EFFECTS OF STRUCTURE AND STRAIN-MEASUREMENT TECHNIQUE ON THE MATERIAL PROPERTIES OF YOUNG HUMAN TENDONS AND FASCIA
EFFECTS OF STRUCTURE AND STRAIN-MEASUREMENT TECHNIQUE ON THE MATERIAL PROPERTIES OF YOUNG HUMAN TENDONS AND FASCIA
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DOI：
10.1016/0021-9290(84)90090-3
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发表时间：
1984-01-01
影响因子：
2.4
通讯作者：
BRACKETT, K
中科院分区：
文献类型：
--
作者：
BUTLER, DL;GROOD, ES;BRACKETT, K
软组织中胶原束的组织结构对其材料性能有很大影响。为了研究这一点，对取自18名青年捐赠者(平均年龄26岁)的双层阔筋膜、分离的平行束肌腱(股薄肌和半腱肌腱)和平行束的骨-髌腱-骨单元进行了60次破坏试验。2层阔筋膜的大部分材料参数与分离的肌腱和肌腱-骨标本的对应值没有显著差异，表明其在加载过程中以纵向纤维为主。股薄肌腱的弹性系数和最大应力与所有其他组织之间存在差异。报告的肌腱、筋膜和其他胶原组织的最大应变和失效应变的较大差异促使了另一阶段的研究。在60次失败测试中的15次中，同时拍摄了表面标记以确定：局部表面应变和夹持值之间的差异；夹具中发生的组织滑移和/或破坏的量；以及应变测量技术对组织模数和破坏能量密度的影响。所有受试组织的最大局部应变为握力应变的25%-30%。在所有被直接夹持的孤立组织中都可以看到一些滑脱和/或破坏，尽管它们的最大握力应变与肌腱-骨单位的值相似。对于所有的组织，在握力和中部测量之间的模数和破坏能量密度发现有2到3倍的差异。
The organization of collagen bundles in soft tissues strongly influences their material properties. To study this, 60 failure tests were conducted on double-layered fascia lata, isolated parallel-bundled tendons (gracilis and semitendinosus) and parallel-bundled bone-patellar tendon-bone units taken from about the knees of 18 young human donors (mean age of 26 yr). Most material parameters for the 2-layered fascia lata did not differ significantly from corresponding values for the isolated tendons and tendon-bone preparations, suggesting their longitudinal fibers predominated during loading. Differences were present between the gracilis tendon and all other tissues for modulus and maximum stress. The larger variations in reported maximum and failure strains for tendons, fascia and other collagenous tissues prompted the other phase of the study. During 15 of the 60 failure tests, surface markers were simultaneously filmed to determine: differences between local surface strains and grip to grip values; the amount of tissue slippage and/or failure occurring in the grips; and the effect of strain measurement technique on tissue moduli and failure energy densitites. Maximum local strains were 25-30% of grip strains for all tissues tested. Some slippage and/or failure could be seen in all isolated tissues which were gripped directly although their maximum grip strains were similar to values for tendon-bone units. For all tissues, 2- to 3-fold differences were found in moduli and failure energy densities between grip and midregion measurements.