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Titlebook: Mechanical Stress, Functional Adaptation and the Variation Structure of the Human Femur Diaphysis; E. Amtmann Conference proceedings 1971

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書目名稱Mechanical Stress, Functional Adaptation and the Variation Structure of the Human Femur Diaphysis
編輯E. Amtmann
視頻videohttp://file.papertrans.cn/629/628346/628346.mp4
叢書名稱Advances in Anatomy, Embryology and Cell Biology
圖書封面Titlebook: Mechanical Stress, Functional Adaptation and the Variation Structure of the Human Femur Diaphysis;  E. Amtmann Conference proceedings 1971
描述According to the classical theory of functional structure of bone which was developed by J. Wolff (1884, 1892) and W. Roux (1895) following the investigations of the functional architecture of the substantia spongiosa by H. von Meyer (1867), bone is "functionally" laid down in gross form as well as in minute architecture in accordance with the "maximum-minimum-law". As a result of functional adaptation, a maximum of efficiency is achieved with a minimum of material (Kummer, 1962a). In this sense functional adaptation is a reaction of adaptation of the idiotype-within the bounds of the reaction norm-to a changed internal environment, that is in this case an adaptation to changed mechanical stresses. 1. The Formation of the Normal Femur Shape The heredity basis of shape characteristics of human femora is really unknown. Identical twins show a significant lower variability of length of femur than binovular twins. Population variability of length of femur due to heritability may exceed twice the variability due to environmental factors (Knussmann, 1968). A significant part of the total variation of femur shape characteristics remains therefore unexplained supposing that the sources of
出版日期Conference proceedings 1971
關(guān)鍵詞adaptation; bone; heredity; stress
版次1
doihttps://doi.org/10.1007/978-3-642-65230-1
isbn_softcover978-3-540-05464-1
isbn_ebook978-3-642-65230-1Series ISSN 0301-5556 Series E-ISSN 2192-7065
issn_series 0301-5556
copyrightThe Editor(s) (if applicable) and The Author(s), under exclusive license to Springer-Verlag GmbH, DE
The information of publication is updating

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Materials and Methods,ody were available from sixteen subjects. The anatomical specimens had been previously fixed in formol-alcohol during their preservation for dissection. The bones were dissected out and the fibrous periosteum stripped off. Five transverse sections of bone, 10.0 to 15.2 mm thick, were removed from ea
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Results,as presented. This limited sample showed that the least dense areas of the corticalis are located on the dorsal side at the height of the gluteal tuberosity, and on the ventral side, proximal to the suprapatellar surface. A less distinct density minimum occurs approximately at the height of the seco
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Discussion,al we may expect a distribution of stresses in the proximal cross-sections of the femur, as shown in the Fig. 2a and b. The greatest compressive stresses and the greatest tensile stresses are found on the respective medial and lateral side of the femur shaft. The neutral surface lies lateral to the
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,Mechanische Beanspruchung, funktionelle Anpassung und das Variationsgefüge der menschlichen Femurdiher Faktoren in der postnatalen Entwicklung aus. Das Wirkgefüge dieser Einflu?gr??en wird auch in einem komplexen Korrelationsgefüge verschiedener Gestalt- und Strukturvariabler des adulten Femurschaftes widergespiegelt. Das Ziel der vorliegenden Untersuchung war es, dieses komplexe Variationsgefüge
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