Mechanical properties vary for different regions of the finger extensor apparatus.
Mechanical properties vary for different regions of the finger extensor apparatus.
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DOI：
10.1016/j.jbiomech.2014.06.035
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发表时间：
2014-09-22
影响因子：
2.4
通讯作者：
Kamper, Derek
中科院分区：
文献类型：
--
作者：
Qian, Kai;Traylor, Kay;Lee, Sang Wook;Ellis, Benjamin;Weiss, Jeffrey;Kamper, Derek
伸肌装置是一种覆盖每根手指背侧的腱膜，它将许多肌肉肌腱的力量传递到指骨。多个肌腱直接整合到不同部位的结构中，伸肌装置在多个点上附着在指骨上。因此，预测伸肌装置内的力分布以及向指骨的传递是具有挑战性的，特别是在对组织的潜在机械特性的了解有限的情况下。我们通过对尸体标本的材料测试，对其中一些特性进行了量化。我们从19个伸肌罩样品中在指定位置打孔样品。使用定制的材料测试设备对每个样品进行材料测试直至失败。测试显示，在极限载荷、极限应变、厚度和沿延伸罩长度的切线模量方面存在显著差异。具体来说，伸肌罩的厚度、极限载荷和极限应变在更近的部分更大，而切线模量在更远的部分更大。引擎盖内机械性能的变化可能会影响力传递的预测，因此，在模拟伸肌装置的作用时应考虑到这一点。在整个伸肌帽上，切线模量值比其他软组织（如跟腱和膝关节韧带）的报道值要小得多，而最终应变要大得多。因此，伸肌装置中的组织似乎具有更大的弹性，因此应该相应地建模。
The extensor apparatus, an aponeurosis that covers the dorsal side of each finger, transmits force from a number of musculotendons to the phalanges. Multiple tendons integrate directly into the structure at different sites and the extensor apparatus attaches to the phalanges at multiple points. Thus, prediction of the force distribution within the extensor apparatus, or hood, and the transmission to the phalanges is challenging, especially as knowledge of the underlying mechanical properties of the tissue is limited. We undertook quantification of some of these properties through material testing of cadaver specimens. We punched samples at specified locations from 19 extensor hood specimens. Material testing was performed to failure for each sample with a custom material testing device. Testing revealed significant differences in ultimate load, ultimate strain, thickness, and tangent modulus along the length of the extensor hood. Specifically, thickness, ultimate load, and ultimate strain were greater in the more proximal sections of the extensor hood, while the tangent modulus was greater in the more distal sections. The variations in mechanical properties within the hood may impact prediction of force transmission and, thus, should be considered when modeling the action of the extensor apparatus. Across the extensor hood, tangent modulus values were substantially smaller than values reported for other soft tissues, such as the Achilles tendon and knee ligaments, while ultimate strains were much greater. Thus, the tissue in the extensor apparatus seems to have greater elasticity, which should be modeled accordingly.
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影响因子：
1.8
作者：
Kamper, DG;Fischer, HC;Cruz, EG
通讯作者：
Cruz, EG
影响因子：
6.4
作者：
Deshpande, Ashish D.;Xu, Zhe;Matsuoka, Yoky
通讯作者：
Matsuoka, Yoky
DOI：
10.2106/00004623-196749070-00002
发表时间：
1967-01-01
影响因子：
5.3
作者：
LITTLER, JW;EATON, RG
通讯作者：
EATON, RG
影响因子：
1.9
作者：
MICKS, JE;RESWICK, JB
通讯作者：
RESWICK, JB
影响因子：
2.4
作者：
Kelleher, Jordan E.;Siegmund, Thomas;Henslee, Erin A.
通讯作者：
Henslee, Erin A.