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Books > Medicine > Pre-clinical medicine: basic sciences > Physiology
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Mechanical Stress, Functional Adaptation and the Variation Structure of the Human Femur Diaphysis (Paperback, Softcover reprint of the original 1st ed. 1971)
Loot Price: R2,081
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Mechanical Stress, Functional Adaptation and the Variation Structure of the Human Femur Diaphysis (Paperback, Softcover reprint of the original 1st ed. 1971)
Series: Advances in Anatomy, Embryology and Cell Biology, 44/3
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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 variation due to
heritability and environmental factors are also nearly the same for
the other traits.
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