Apparent transverse compressive material properties of the digital flexor tendons and the median nerve in the carpal tunnel.
Apparent transverse compressive material properties of the digital flexor tendons and the median nerve in the carpal tunnel.
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DOI：
10.1016/j.jbiomech.2010.12.005
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发表时间：
2011-03-15
影响因子：
2.4
通讯作者：
Brown, Thomas D.
中科院分区：
文献类型：
--
作者：
Main, Erin K.;Goetz, Jessica E.;Rudert, M. James;Goreham-Voss, Curtis M.;Brown, Thomas D.
腕管综合征是一种常见的周围神经疾病，由正中神经的机械损伤引起，这可能部分是由于邻近的手指屈肌腱的撞击。现实的有限元（FE）分析，以确定屈肌腱和正中神经之间的接触应力取决于使用生理上准确的材料属性。为了评估指屈肌腱和正中神经的横向压缩特性，这些组织从十具尸体前臂标本横向压缩，而轴向负载。实验压缩数据与基于有限元的优化程序结合使用，以确定一阶Ogden材料特性定义的表观超弹性系数（μ和α）。浅肌腱的平均系数对为μ=35.3kPa，α =8.5，深肌腱的平均系数对为μ=39.4kPa，α=9.2，拇长屈肌腱的平均系数对为μ=24.9kPa，α=10.9，正中神经的平均系数对为μ=12.9kPa，α=6.5。这些平均Ogden系数表明，FPL肌腱在低应变下比深屈肌腱或浅屈肌腱更具顺应性，并且浅屈肌腱和深屈肌腱压缩行为之间没有显著差异。正中神经的顺应性明显高于任何屈肌腱。在这项研究中确定的材料性能可以用来更好地了解腕管软组织的功能力学和正中神经压迫损伤的可能机制，这可能导致腕管综合征的发病。
Carpal tunnel syndrome is a frequently encountered peripheral nerve disorder caused by mechanical insult to the median nerve, which may in part be a result of impingement by the adjacent digital flexor tendons. Realistic finite element (FE) analysis to determine contact stresses between the flexor tendons and median nerve depends upon the use of physiologically accurate material properties. To assess the transverse compressive properties of the digital flexor tendons and median nerve, these tissues from ten cadaveric forearm specimens were compressed transversely while under axial load. The experimental compression data were used in conjunction with an FE-based optimization routine to determine apparent hyperelastic coefficients (μ and α) for a first-order Ogden material property definition. The mean coefficient pairs were μ=35.3kPa, α =8.5 for the superficial tendons, μ=39.4kPa, α=9.2 for the deep tendons, μ=24.9kPa, α=10.9 for the flexor pollicis longus (FPL) tendon, and μ=12.9kPa, α=6.5 for the median nerve. These mean Ogden coefficients indicate that the FPL tendon was more compliant at low strains than either the deep or superficial flexor tendons, and that there was no significant difference between superficial and deep flexor tendon compressive behavior. The median nerve was significantly more compliant than any of the flexor tendons. The material properties determined in this study can be used to better understand the functional mechanics of the carpal tunnel soft tissues and possible mechanisms of median nerve compressive insult, which may lead to the onset of carpal tunnel syndrome.
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影响因子：
1.8
作者：
Lee, SB;Nakajima, T;An, KN
通讯作者：
An, KN
DOI：
10.1080/02533839.2004.9670951
发表时间：
2004-11-01
影响因子：
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DOI：
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2002-12-01
影响因子：
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通讯作者：
Koob, TJ
DOI：
10.1016/0072-968x(73)90006-5
发表时间：
1973-02-01
期刊：
The Hand
影响因子：
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作者：
Wilson, W F;Hueston, J T
通讯作者：
Hueston, J T
DOI：
10.2106/00004623-196648020-00001
发表时间：
1966-01-01
影响因子：
5.3
作者：
PHALEN, GS
通讯作者：
PHALEN, GS