{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,7,30]],"date-time":"2025-07-30T12:43:22Z","timestamp":1753879402277,"version":"3.41.2"},"reference-count":53,"publisher":"ASME International","issue":"12","license":[{"start":{"date-parts":[[2020,9,8]],"date-time":"2020-09-08T00:00:00Z","timestamp":1599523200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.asme.org\/publications-submissions\/publishing-information\/legal-policies"}],"content-domain":{"domain":["asmedigitalcollection.asme.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2020,12,1]]},"abstract":"<jats:title>Abstract<\/jats:title>\n               <jats:p>Microcomputed tomography (micro-CT) based finite element models (FEM) are efficient tools to assess bone mechanical properties. Although they have been developed for different animal models, there is still a lack of data for growing rat long bone models. This study aimed at developing and calibrating voxel-based FEMs using micro-CT scans and experimental data. Twenty-four tibiae were extracted from rats aged 28, 56, and 84\u2009days old (d.o.) (n\u2009=\u20098\/group), and their stiffness values were evaluated using three-point bending tests. Prior to testing, tibiae were scanned, reconstructed, and converted into FEM composed of heterogeneous bone properties based on pixel grayscales. Three element material laws (one per group) were calibrated using back-calculation process based on experimental bending data. Two additional specimens per group were used for model verification. The calibrated rigidity\u2013density (E-\u03c1) relationships were different for each group: E28\u2009=\u200910,320\u00b7\u03c1ash3.45; E56\u2009=\u200943,620\u00b7\u03c1ash4.41; E84\u2009=\u200920,090\u00b7\u03c1ash2.0. Obtained correlations between experimental and FEM stiffness values were 0.43, 0.10, and 0.66 with root-mean-square error (RMSE) of 14.4%, 17.4%, and 15.2% for 28, 56, and 84 d.o. groups, respectively. Prediction errors were less than 13.5% for 28 and 84 d.o. groups but reached 57.1% for the 56 d.o. group. Relationships between bone physical and mechanical properties were found to change during the growth, similarly to bending stiffness values, which increased with bone development. The reduced correlation observed for the 56 d.o. group may be related to the pubescent transition at that age group. These FE models will be useful for investigation of bone behavior in growing rats.<\/jats:p>","DOI":"10.1115\/1.4047991","type":"journal-article","created":{"date-parts":[[2020,8,4]],"date-time":"2020-08-04T04:37:56Z","timestamp":1596515876000},"update-policy":"https:\/\/doi.org\/10.1115\/crossmarkpolicy-asme","source":"Crossref","is-referenced-by-count":0,"title":["Nondestructive Assessment of Growing Rat Tibial Mechanical Properties Under Three-Point Bending: A Microcomputed Tomography Based Finite Element Study"],"prefix":"10.1115","volume":"142","author":[{"given":"Yann","family":"Zimmermann","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering, Polytechnique Montr\u00e9al, Station Centre-Ville, P.O. Box 6079, Montreal, QC H3C 3A7, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Tanvir","family":"Mustafy","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Polytechnique Montr\u00e9al, Station Centre-Ville, P.O. Box 6079, Montreal, QC H3C 3A7, Canada"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Isabelle","family":"Villemure","sequence":"additional","affiliation":[{"name":"Department of Mechanical Engineering, Polytechnique Montr\u00e9al, Station Centre-Ville, P.O. 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