Effects of growth on residual stress distribution along the radial depth of cortical cylinders from bovine femurs.

Yamada Satoshi; Tadano Shigeru

タイトル	en Effects of growth on residual stress distribution along the radial depth of cortical cylinders from bovine femurs.
作成者	en Yamada, Satoshi NRID 1000090730169 en Tadano, Shigeru NRID 1000050175444
アクセス権	open access
主題	Other en Bone Other en Biomechanics Other en X-ray diffraction Other en Growth effect Other en Residual stress
内容注記	Abstract en Residual stress is defined as the stress that remains in bone tissue without any external forces. This study investigated the effects of growth on residual stress distributions from the surface to deeper regions of cortical cylinders obtained from less-than-one-month-old (Group Y) and two-year-old (Group M) bovine femurs. In these experiments, five diaphysis specimens from each group were used. Residual stress was measured using a high-energy synchrotron white X-ray beam to penetrate X-rays into the deeper region of the bone specimens. The measurements in the cortical cylinders from Groups Y and M were performed at 0.5- and 1-mm intervals, respectively, from the outer surface to the deeper region of the diaphysis specimens at four positions: anterior, posterior, lateral, and medial. The residual stress was calculated on the basis of variation in the interplanar spacing of hydroxyapatite crystals in the bone tissue. According to the results, the diaphysis specimens from Group Y were not subjected to large residual stresses (average −1.2 MPa and 2.4 MPa at the surface region and 1.5 mm depth, respectively). In Group M, the surface region of the diaphysis specimens was subjected to tensile residual stresses (average 6.7 MPa) and the deeper region was subjected to compressive stresses (average −8.2 MPa at 3 mm depth). There was a strong significant difference between both these regions. The value of residual stresses at the surface region of the diaphysis specimens in both the groups had a positive statistical correlation with the cortical thickness at the measured locations.
出版者	en Elsevier
日付	Issued2013-09-03
言語	eng
資源タイプ	journal article
出版タイプ	AM
資源識別子	HDL http://hdl.handle.net/2115/53104
関連	isVersionOf DOI https://doi.org/10.1016/j.jbiomech.2013.07.002 PMID 23895894
収録誌情報	PISSN 0021-9290 NCID AA00694200 en Journal of biomechanics 巻46 号13 開始ページ2130 終了ページ2136
ファイル	fulltext HUSCAP090413.pdf 1.53 MB (application/pdf) Issued2013-09-03
コンテンツ更新日時	2023-07-26