The biomechanical role of the chondrocranium and sutures in a lizard cranium.
The biomechanical role of the chondrocranium and sutures in a lizard cranium.
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DOI：
10.1098/rsif.2017.0637
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发表时间：
2017-12
期刊：
影响因子：
--
通讯作者：
Evans SE
中科院分区：
文献类型：
--
作者：
Jones MEH;Gröning F;Dutel H;Sharp A;Fagan MJ;Evans SE
软组织在颅骨生物力学中的作用仍然知之甚少。尤其是软骨颅骨，这部分脑壳作为软骨存在，具有不同程度的矿化。尽管有证据表明缝线会改变应变分布，但忽略缝线的生物力学作用仍然很常见。在这里，我们研究的作用，缝合线和软骨颅在南美洲的泰加蜥蜴萨尔瓦多meritrium。我们使用多体动力学分析（MDA）提供现实的负载条件，前，后单侧咬合和详细的有限元模型，以检查应变的大小和分布。我们发现，软骨颅骨内的应变在前咬时最大，并且主要是拉伸的;此外，软骨颅骨的存在不会大大降低颅骨内的应变，除非它具有与骨相同的材料特性。这一结果与以前认为前部（鼻中隔）起支撑结构作用的观点相矛盾。将缝线纳入颅骨模型不仅增加了整体应变幅度，而且导致了更复杂的张力和压缩分布，而不是矢状弯曲下的梁分布。
The role of soft tissues in skull biomechanics remains poorly understood. Not least, the chondrocranium, the portion of the braincase which persists as cartilage with varying degrees of mineralization. It also remains commonplace to overlook the biomechanical role of sutures despite evidence that they alter strain distribution. Here, we examine the role of both the sutures and the chondrocranium in the South American tegu lizard Salvator merianae. We use multi-body dynamics analysis (MDA) to provide realistic loading conditions for anterior and posterior unilateral biting and a detailed finite element model to examine strain magnitude and distribution. We find that strains within the chondrocranium are greatest during anterior biting and are primarily tensile; also that strain within the cranium is not greatly reduced by the presence of the chondrocranium unless it is given the same material properties as bone. This result contradicts previous suggestions that the anterior portion (the nasal septum) acts as a supporting structure. Inclusion of sutures to the cranium model not only increases overall strain magnitudes but also leads to a more complex distribution of tension and compression rather than that of a beam under sagittal bending.
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影响因子：
3.7
作者：
Davis, Julian L.;Dumont, Elizabeth R.;Grosse, Ian R.
通讯作者：
Grosse, Ian R.
DOI：
10.1007/s10856-015-5619-8
发表时间：
2016-01
期刊：
Journal of materials science. Materials in medicine
影响因子：
--
作者：
Griffin MF;Premakumar Y;Seifalian AM;Szarko M;Butler PE
通讯作者：
Butler PE
影响因子：
2.2
作者：
Burgin, L. V.;Edelsten, L.;Aspden, R. M.
通讯作者：
Aspden, R. M.
对鸵鸟（Struthio Camelus）颅骨有限元模型的验证实验。
影响因子：
2.7
作者：
Cuff AR;Bright JA;Rayfield EJ
通讯作者：
Rayfield EJ
影响因子：
3.7
作者：
Curtis N;Jones ME;Shi J;O'Higgins P;Evans SE;Fagan MJ
通讯作者：
Fagan MJ