Relationship between mechanical and microstructural parameters of rat lumbar spine in different ages

Xiaorong Hu and He Gong

Computer Methods in Biomechanics and Biomedical Engineering, 2023, vol. 26, issue 16, 1994-2007

Abstract: Exploring the relationships between microstructure and mechanical properties of bones may provide effective suggestions for increasing bone strength and reducing osteoporotic fracture. In this research, the tissue-level mechanical parameters, microstructure parameters of cancellous bone, and apparent mechanical parameters of L6 vertebral body were calculated in female SD rats aged 1-, 3-, 5-, 7-, 9-, 11-, 13-, 15-, 16-, and 17-month-old. Data were processed with Kruskal–Wallis test, linear regression and Spearman’s rank correlation analysis. Appropriately increasing the plate Tb.N could enhance mechanical properties of bone. Tb.Th and Tb.N were two key factors in determining the tissue-level mechanical properties of cancellous bone. The microstructure could significantly predict mechanical parameters. Our findings may help to further understand the mechanism of osteoporotic fractures.

Date: 2023
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DOI: 10.1080/10255842.2022.2162340

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