title: [Distribution of density, pressure and tensile strength of the human femoral shaft].
abstract: 105 cross sections of 21 Femora (13 males, 8 females) were examined with respect to X-ray density, compressive and tensile breaking strength. On X-ray photographs of each specimen, the density measurements were obtained with photographic aequidenses in 4 sites: anterior, medial, posterior and lateral. Then the compressive and tensile breaking strength were determined on 817 standardised samples from the same sites. The results show, that the X-ray density, compressive and tensile breaking strength respectively represent characteristics features of their distributions, and that these three factors are correlated with one another. From these facts it is derived, that the resultant force in the femoral shaft may be within the cross section of femur, and that the functional adaptation of the bone on its mechanical stress is reached by several factors of bone materials at the same time.
mesh_terms: D015502:Absorptiometry, Photon; D000368:Aged; D005260:Female; D005269:Femur / Q000033:anatomy & histology*; D006801:Humans; D008297:Male; D008875:Middle Aged; D011312:Pressure; D013718:Tensile Strength
vernacular_title: Die Verteilung von Dichte, Druck- und Zugfestigkeit im menschlichen Femurschaft.