Deformation and failure of cartilage in the tensile mode
| العنوان: | Deformation and failure of cartilage in the tensile mode |
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| المؤلفون: | Bahaa B. Seedhom, Yoshihiro Sasazaki, Roger C. Shore |
| المصدر: | Journal of Anatomy. 208:681-694 |
| بيانات النشر: | Wiley, 2006. |
| سنة النشر: | 2006 |
| مصطلحات موضوعية: | Histology, Materials science, genetic structures, Scanning electron microscope, Microscopy, Electron, Transmission, Tensile Strength, Ultimate tensile strength, medicine, Perpendicular, Animals, Composite material, Molecular Biology, Ecology, Evolution, Behavior and Systematics, Rupture, Microscopy, Confocal, Strain (chemistry), Cartilage, Original Articles, Cell Biology, Extracellular Matrix, medicine.anatomical_structure, Transmission electron microscopy, Microscopy, Electron, Scanning, Ultrastructure, Cattle, Collagen, Stress, Mechanical, Anatomy, Deformation (engineering), Rheology, Developmental Biology |
| الوصف: | The aim of this study was to visualize, at the ultrastructural level, the deformation and failure mechanism of cartilage matrix in the tensile mode. Full-thickness dumbbell-shaped specimens were prepared from adult bovines. There were two specimen groups; in the 'parallel' group the specimen axis was parallel to the split lines defining the preferential orientation of the collagen in the articular surface, and in the 'perpendicular' group the specimen axis was perpendicular to the split lines. Specimens were placed with the articular surface uppermost and subjected to a graded series of strain within individual mini-tension devices, while observed with stereomicroscopy and confocal laser scanning microscopy. Thereafter, the changes in the ultrastructure were observed with both scanning and transmission electron microscopy. The mechanism of cartilage failure in the tensile mode comprised the following stages, whether the strain was applied parallel or perpendicular to the split line. (1) At 0% strain a fibrillar meshwork within the articular surface was predominantly orientated in the direction of the split line. (2) As strain increased, the fibrillar meshwork became more orientated in the parallel group and reorientated in the perpendicular group in the direction of the applied strain. (3) After complete reorientation of the fibrillar meshwork in the direction of the applied strain, the initial sign of failure was rupture of the fibrillar meshwork within the articular surface. (4) Subsequently, the rupture rapidly propagated into the deeper layers. Greater strains were required for fibrillar reorientation and complete rupture in the 'perpendicular group' than in the parallel group. |
| تدمد: | 1469-7580 0021-8782 |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e25cdc868348a82fe252b07be2c53eb9 https://doi.org/10.1111/j.1469-7580.2006.00569.x |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....e25cdc868348a82fe252b07be2c53eb9 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 14697580 00218782 |
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