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Showing 1 to 17 of 17 for “"bone microstructure"”.
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Impact of Hyperglycemia on Rat Cortical Bone Microstructure and Osteoprogenitor Cell Exhaustion
… has been associated with an increased risk of bone fracture and implant failure. However, the underlying reasons have yet to be entirely understood. Our group previously reported that osteocyte number appeared increased in the peri-implant bone of hyperglycemic rats, which might increase …
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MRI Quantification of Cortical Bone Microstructure and Material Composition with Ultrashort Echo Time Sequences
Quantitative imaging assessment of cortical bone structure and material composition provides additional information about bone health beyond conventional radiographic assessment of bone mineral density (BMD). Large prospective studies have found that cortical bone imaging biomarkers are associated …
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The palaeobiology of the non-mammalian cynodonts deduced from bone microstructure and stable isotopes
… basal to more derived forms was examined using bone cross-sectional geometry and histology, as well as isotope analyses. The bone histology of multiple postcrania revealed distinct variations in growth pattern between the genera studied. The bone histology of the basal Procynosuchus indicates …
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Functional anatomy, osteogenesis and bone microstructure of the appendicular system of African mole-rats (Rodentia: Ctenohystrica: Bathyergidae)
… anatomy, morphological diversity and postnatal bone morphogenesis of the appendicular system of these subterranean mammals. African mole-rats are small mammals highly adapted to the hypogeous niche that feed on underground roots and tubers. They forage, mate, breed and to some extent even …
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Comparison of the long bone microstructure of two southern African marine birds, the Cape gannet (Morus capensis) and the African penguin (Spheniscus demersus) with respect to their aquatic adaptations
… only its forelimbs. In this study, the long bones of ten penguins and nine gannets were compared in terms of microanatomy and histology with respect to ontogenetic stage (hatchlings, juveniles and adults) and locomotion. Micronatomical and histological findings of the fore-limbs and hind …
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The biomechanical consequences of body size differences in humans
… and 4) variability and scaling patterns in bone microstructure of the femur. Additionally, this dissertation explored different statistical approaches for examining each of these areas to determine whether results were robust to the chosen statistical approach and whether novel statistical …
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Extrapancreatic actions of incretin-based therapies on bone in diabetes mellitus
… mellitus is correlated with modifications in bone microarchitectural and mechanical strength, leading to increased bone fragility. The incretin hormones, with a classical effect to increase insulin secretion following food ingestion, are now postulated to have important direct effects on bone. …
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The effect of Zoledronate treatment timing on lumbar and caudal vertebrae in ovariectomized rats
… alternatives with respect to their effects on bone microstructure and strength. This paper, then, investigates the effects of treatment timing using Zoledronate [ZOL], a potent bisphosphonate, on the lumbar and caudal vertebrae in ovariectomized [OVX], female Wistar rats. Methods: Twenty nine …
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An experimental investigation, into the effects of thermal alteration on microstructures in mammalian long bones.
… to establish the extent of changes apparent in bone microstructure through the varying temperatures and types of burn. The results demonstrated that bones burnt in controlled circumstances displayed a varied degree of change in osteon diameter from the unburnt transverse sections and the samples …
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Computational modeling of trabecular bone in lower extremity injuries due to impact
… for a substantial number of lower extremity bone fractures. The Army Research Laboratory (ARL) concentrates part of its research efforts into better understanding impact related injuries. Despite a significant number of articles on bone mechanical behavior, only a few consider high strain …
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Osteohistology and Growth of Edmontosaurus and Assessment of Life History Changes in Hadrosaurid Dinosaurs
… which is the study of the internal bone microstructure, has revolutionized paleontological research and permitted quantitative assessment of numerous life history aspects in extinct organisms. Hadrosaurid dinosaurs, the dominant large-bodied terrestrial herbivores in most Late …
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The Evaluation of Usefulness of the FEA and Relationship Between Trabecular Microstructural and Biomechanical Properties In Human Femoral Head
… and the relationship between trabecular bone microstructure and its biomechanical properties, the microimage-based FEA and the experimental test were performed in the same bone cores from the primary compressive trabecular system of human femoral head. Twenty-one human femoral heads were …
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The use of histological methods to distinguish between burned remains of human and non-human bone
… analysis it is necessary to identify if bone tissue is animal or human in nature. This process is complicated when bone is highly fragmented or burned. Previous research has established the ability to differentiate human from non-human bone histologically, however, further research is …
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Mechanisms for the production of stress-generated potentials in biological tissues
Submitted by Carolyn Mead (cmead2@illinois.edu) on 2011-06-02T16:23:20Z No. of bitstreams: 1 1987_Otter.pdf: 1740744 bytes, checksum: 02c93ac1438787bc9dc37286d137412c (MD5)
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Exploring Microstructural Signatures of Physiological Stress through Cross-Sectional Geometry and Cortical Bone Histology
… assessments of stress and health in cortical bone may allow for similar approaches at less severe presentations (i.e., prior to macroscopic lesion formation). However, the specific mechanisms of microstructural responses to physiological stress are unclear. This dissertation explores the …
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A qualitative and quantitative investigation of structural morphology in the neonatal ilium
Cortical and trabecular bone characteristics can be used to make predictions regarding previous loading regimes and developmental milestones which a bone has encountered. This has led to the suggestion that in the adult pelvis, bone patterning is related to the remodeling forces generated during …
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Simulations of deformations and fracture of biological materials
… Secondly, we model the deformation of a cortical bone due to microindentation. Thirdly, we model the fracture of cortical bone under a uniaxial tensile load by using an extended finite element method. Finally, we evaluate how an arrangement of curved mineral lamellae in bone, at a nanoscale, …