A comparison of the quasi-static mechanical and non-linear viscoelastic properties of the human semitendinosus and gracilis tendons.
A comparison of the quasi-static mechanical and non-linear viscoelastic properties of the human semitendinosus and gracilis tendons.
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DOI：
10.1016/j.clinbiomech.2009.12.007
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发表时间：
2010-05
期刊：
影响因子：
--
通讯作者：
Kilger R
中科院分区：
文献类型：
--
作者：
Abramowitch SD;Zhang X;Curran M;Kilger R
超过50%的前交叉韧带重建是使用半腱肌和股薄肌腱自体移植。尽管它们的使用越来越多，但关于它们的机械性能的定量数据仍然很少。因此，本研究的目的是探讨人体半腱肌和股薄肌肌腱的准静态力学和非线性粘弹性特性，以及这些特性的变化沿着其长度。试样进行了一系列的单轴拉伸试验：1小时静态应力松弛试验，30个周期的循环应力松弛试验和载荷失效试验。为了描述非线性粘弹性行为，准线性粘弹性理论被用来模拟静态应力松弛实验的数据。描述股薄肌腱近端和远端的粘弹性行为的常数是相似的。然而，半腱肌腱的近侧一半比其远侧一半有更大的粘性反应，这也明显高于近侧股薄肌腱。在准静态力学性能方面，半腱肌腱的近端和远端之间的性能是相似的。然而，远端股薄肌腱表现出显着较高的切线模量和极限应力相比，其近端一半，这也是显着高于远端半腱肌腱。本研究结果显示半腱肌腱与股薄肌腱在准静态力学与非线性黏弹性性质上的差异。这些结果对于建立外科预处理方案和移植物选择是重要的。
Over fifty-percent of anterior cruciate ligament reconstructions are performed using semitendinosus and gracilis tendon autografts. Despite their increased use, there remains little quantitative data on their mechanical behavior. Therefore, the objective of this study was to investigate the quasi-static mechanical and nonlinear viscoelastic properties of human semitendinosus and gracilis tendons, as well as the variation of these properties along their length. Specimens were subjected to a series of uniaxial tensile tests: one-hour static stress-relaxation test, 30-cycle cyclic stress-relaxation test and load to failure test. To describe the nonlinear viscoelastic behavior, the quasi-linear viscoelastic theory was utilized to model data from the static stress relaxation experiment. The constants describing the viscoelastic behavior were similar between the proximal and distal halves of the gracilis tendon. The proximal half of the semitendinosus tendon, however, had a greater viscous response than its distal half, which was also significantly higher than the proximal gracilis tendon. In terms of the quasi-static mechanical properties, the properties were similar between the proximal and distal halves of the semitendinosus tendon. However, the distal gracilis tendon showed a significantly higher tangent modulus and ultimate stress compared to its proximal half, which was also significantly higher than the distal semitendinosus tendon. The results of this study demonstrate differences between the semitendinosus and gracilis tendons in terms of their quasi-static mechanical and nonlinear viscoelastic properties. These results are important for establishing surgical preconditioning protocols and graft selection.
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影响因子：
3.8
作者：
Makihara, Y;Nishino, A;Kanamori, A
通讯作者：
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影响因子：
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DOI：
10.1115/1.1351889
发表时间：
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影响因子：
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作者：
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