López Valdés FJ, Vázquez Sanz C, Victoria Rodríguez I, Forriol F. [Translated article] Mechanical properties variations of immature bone in the earliest stages of development.
Rev Esp Cir Ortop Traumatol (Engl Ed) 2024:S1888-4415(24)00073-0. [PMID:
38621437 DOI:
10.1016/j.recot.2024.04.001]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2023] [Accepted: 11/24/2023] [Indexed: 04/17/2024] Open
Abstract
INTRODUCTION
Bone as a material varies its composition and mechanical properties throughout life. Although these variations are better understood in adulthood, there is little experimental information on the variation of these properties in early stages of development. The objective of this study is to analyze the mechanical behavior and chemical properties of cortical bone tissue from two animal species in these earliest stages.
MATERIAL AND METHODOLOGY
Twenty specimens of cortical bone were manufactured from bovine and ovine species that were in different stages of development (feeding exclusively on breast milk, in the transition period to feed or pasture, and young animals but on a solid food diet). The specimens were subjected to tensile tests, recorded with a high-speed camera to obtain deformation maps. Measurements of the tensile force until the specimen broke were also carried out. A fractographic study was carried out with a scanning electron microscope to analyze the fracture surface and an analysis of the amount of calcium in each of the specimens using X-ray dispersion spectroscopy.
RESULTS
A statistically significant and positive correlation was found between the elastic modulus of the specimens and their calcium content. A trend towards more rigid behavior with age was observed.
CONCLUSIONS
Young bone tissue tends to stiffen with age as the calcium content increases with an increase in elastic modulus.
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