Trabecular Eccentricity and Bone Adaptation
Journal of Theoretical Biology, ISSN: 0022-5193, Vol: 212, Issue: 2, Page: 211-221
2001
- 24Citations
- 38Captures
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Example: if you select the 1-year option for an article published in 2019 and a metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019. If you select the 3-year option for the same article published in 2019 and the metric category shows 90%, that means that the article or review is performing better than 90% of the other articles/reviews published in that journal in 2019, 2018 and 2017.
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Metrics Details
- Citations24
- Citation Indexes24
- 24
- CrossRef18
- Captures38
- Readers38
- 38
Article Description
It is well established that bones functionally adapt by mechanisms that control tissue density, whole bone geometry, and trabecular orientation. In this study, we propose the existence of another such powerful mechanism, namely, trabecular eccentricity, i.e. non-central placement of trabecular bone within a cortical envelope. In the human femoral neck, trabecular eccentricity results in a thicker cortical shell on the inferior than superior aspect. In an overall context of expanding understanding of bone adaptation, the goal of this study was to demonstrate the biomechanical significance of, and provide a mechanistic explanation for, the relationship between trabecular eccentricity and stresses in the human femoral neck. Using composite beam theory, we showed that the biomechanical effects of eccentricity during a habitual loading situation were to increase the stress at the superior aspect of the neck and decrease the stress at the inferior aspect, resulting in an overall protective effect. Further, increasing eccentricity had a stress-reducing effect equivalent to that of increasing cortical thickness or increasing trabecular modulus. We conclude that an asymmetric placement of trabecular bone within a cortical bone envelope represents yet another mechanism by which whole bones can adapt to mechanical demands.
Bibliographic Details
http://www.sciencedirect.com/science/article/pii/S0022519301923719; http://dx.doi.org/10.1006/jtbi.2001.2371; http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=0035929466&origin=inward; http://www.ncbi.nlm.nih.gov/pubmed/11531386; https://linkinghub.elsevier.com/retrieve/pii/S0022519301923719; https://dx.doi.org/10.1006/jtbi.2001.2371
Elsevier BV
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