Structural analysis of the frontal and parietal bones of the human skull
| Autor: | Stephen L. Alexander, C. Allan Gunnarsson, Tusit Weerasooriya, Karin Rafaels |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
X-ray microtomography
Materials science Biomedical Engineering 02 engineering and technology Table (information) Parietal Bone Biomaterials 03 medical and health sciences Human skull 0302 clinical medicine medicine Humans Porosity Aged Aged 80 and over Resolution (electron density) X-Ray Microtomography 030206 dentistry Anatomy 021001 nanoscience & nanotechnology Microstructure Biomechanical Phenomena Transverse plane Skull medicine.anatomical_structure Mechanics of Materials Frontal Bone 0210 nano-technology |
| Zdroj: | Journal of the Mechanical Behavior of Biomedical Materials. 90:689-701 |
| ISSN: | 1751-6161 |
| DOI: | 10.1016/j.jmbbm.2018.10.035 |
| Popis: | Bone specimens were collected from the frontal and parietal bones of 4 adult, human skulls. The microstructure was characterized using microcomputed tomography (micro- CT) at about 6-μm resolution to map the change of porosity as a function of the depth, P(d), from the inner surface nearest to the brain to the outer surface nearest to the skin. A quantifiable method was developed using the measured P(d) to objectively distinguish between the three layers of the skull: the outer table, diploe , and inner table. The thickness and average porosity of each of the layers were then calculated from the measured porosity distributions, and a Gaussian function was fit to the P(d) curves. Morphological parameters were compared between the two bone types (frontal and parietal), while accounting for skull-to-skull variability. Parietal bones generally had a larger diploe accompanied by a thinner inner table. The arrangement of the porous vesicular structure within the outer table was also obtained with micro-CT scans with longer scan times, using enhanced parameters for higher resolution and lower noise in the images. From these scans, the porous structure of the bone appeared to be randomly arranged in the transverse plane, compared to the porous structure of the human femur, which is aligned in the loading direction. |
| Databáze: | OpenAIRE |
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