Humerus osteology, myology, and finite element structure analysis of Cheloniidae
Humerus osteology, myology, and finite element structure analysis of Cheloniidae
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龟科的肱骨骨学、肌肉学和有限元结构分析
DOI：
10.1002/ar.24311
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发表时间：
2020
期刊：
影响因子：
--
通讯作者：
U. Witzel
中科院分区：
文献类型：
--
作者：
A. Krahl;A. Lipphaus;M. Sander;F. Maffucci;S. Hochscheid;U. Witzel
骨学和肌学的适应导致了水翼前鳍在龟科中的形成(所有最近的海龟，除了珊瑚皮龟)，主要用于水下飞行。最近的研究表明，由激励性和拮抗性张力弦组成的复杂系统可以减少骨骼中的弯曲应力，具有生物力学优势。本文采用有限元结构分析(FESA)方法对肘关节的形态和显微解剖结构进行了分析，并将其与鳍状肢的主要功能--水下飞行联系起来。对前鳍肌的解剖可以洞察肌肉的活动路线，也就是肌肉在其起源和插入之间的过程。作用线是通过跨越一具壳壳虫骨架上的物理线条来确定的。对这具骨骼的右侧进行了显微CT扫描。在扫描的基础上，建立有限元模型，输入肌力向量。对肌力进行迭代逼近，直到得到均匀的压应力分布。计算了下冲程和上冲程两种载荷工况。我们发现，除了轴向载荷之外，肌肉包裹(喙臂大肌和短肌、几个伸肌、三头肌的肱骨头)对于在所有的骨横断面上获得均匀的压缩载荷是至关重要的。对肌肉配置的详细了解导致了有限元模型中的压应力分布，这与骨的微观结构相对应。有限元分析表明，在尽量减小弯矩的情况下，骨的主要载荷可能是压缩。
Adaptation of osteology and myology lead to the formation of hydrofoil foreflippers in Cheloniidae (all recent sea turtles exceptDermochelys coriacea) which are used mainly for underwater flight. Recent research shows the biomechanical advantages of a complex system of agonistic and antagonistic tension chords that reduce bending stress in bones. Finite element structure analysis (FESA) of a cheloniid humerus is used to provide a better understanding of morphology and microanatomy and to link these with the main flipper function, underwater flight. Dissection of aCaretta carettagave insights into lines of action, that is, the course that a muscle takes between its origin and insertion, of foreflipper musculature. Lines of action were determined by spanning physical threads on a skeleton ofChelonia mydas. The right humerus of this skeleton was micro‐CT scanned. Based on the scans, a finite element (FE) model was built and muscle force vectors were entered. Muscle forces were iteratively approximated until a uniform compressive stress distribution was attained. Two load cases, downstroke and upstroke, were computed. We found that muscle wrappings (m. coracobrachialis magnus and brevis, several extensors, humeral head of m. triceps) are crucial in addition to axial loading to obtain homogenous compressive loading in all bone cross‐sections. Detailed knowledge on muscle disposition leads to compressive stress distribution in the FE model which corresponds with the bone microstructure. The FE analysis of the cheloniid humerus shows that bone may be loaded mainly by compression if the bending moments are minimized.
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影响因子：
2.8
作者：
Butcher, Michael T.;Blob, Richard W.
通讯作者：
Blob, Richard W.
DOI：
10.1007/bf00243511
发表时间：
1992-11-01
期刊：
EUROPEAN JOURNAL OF APPLIED PHYSIOLOGY AND OCCUPATIONAL PHYSIOLOGY
影响因子：
--
作者：
NARICI, MV;LANDONI, L;MINETTI, AE
通讯作者：
MINETTI, AE
DOI：
--
发表时间：
1989
期刊：
Journal - Oklahoma Dental Association
影响因子：
--
作者：
C. A. Sorokolit;R. Nanda
通讯作者：
R. Nanda
海龟的外部形态、肌肉骨骼系统和神经解剖学
DOI：
--
发表时间：
2002
期刊：
影响因子：
--
作者：
J. Wyneken
通讯作者：
J. Wyneken
影响因子：
2.7
作者：
McCabe K;Henderson K;Pantinople J;Richards HL;Milne N
通讯作者：
Milne N