Influence of the fixation technique on the mechanical properties of human cancellous bone of the femoral head

Selected mechanical properties of human cancellous bone subjected to different treatments: short-term immersion in physiological saline and acetone treatment with subsequent immersion in physiological saline

“…A significant increase in the E 0 was observed after acetone treatment with subsequent immersion in physiological saline. In line with our results, a study by Fischer et al [ 17 ] reported that the mean value of elastic modulus was higher for samples stored in acetone for 24 h than that of non-treated samples, the increase reached 146%. They attributed this difference to the defatting of cancellous bone by acetone.…”

“…Another question arises, whether there are any differences between the mechanical properties of non-treated bone and bone subjected to immersion in physiological saline after treatment with acetone. On this topic, Fischer et al [ 17 ] found that there was a significant difference in mechanical properties between non-treated bone samples and those treated with acetone. However, their study did not immerse the acetone-treated samples anymore.…”

“…Hence, it was unclear if the changes in mechanical properties after acetone treatment could be reversed by subsequent immersion in physiological saline. Moreover, current studies investigating the influence of bone marrow removal on the mechanical properties of cancellous bone are few and mostly limited to animal bones [ 8 ] or human bone from a single anatomical site [ 17 ]. Due to the varying loads, the density and microstructure of human cancellous bone differ from those of animals, resulting in some variability in mechanical properties [ 18 ].…”

A Damage Model to Trabecular Bone and Similar Materials: Residual Resource, Effective Elasticity Modulus, and Effective Stress under Uniaxial Compression

“…The use of models with parameters [35,42] may be promisi for improving the results of the analysis and for expanding the scope of such mode Nevertheless, for compression, quite adequate results were obtained us model ( 1)-(18) (Figures 3, 4, and 6-12). In addition, using the energy criterion in t (3) and the ideas of fracture mechanics [23,24], the following are justified: the resource function (6) and the damage function (7); the formulas for determining fective elastic modulus using experimental data (8), (10), (11), and the apparent m of elasticity (14); the functions of load-displacement (15a) and of apparent stres (16a); and the hypothesis about the consolidation of the particles of the destroyed at the final stage of compression tests (Section 3.4).…”

“…From the point of view of mechanics, at the macro level, bone tissue is an inhomogeneous anisotropic porous material. Structural units (including the walls between the pores) interact with each other, resisting mechanical influences, so a bone sample with a characteristic size of a few millimeters or more can be considered as a certain mechanical system consisting of hierarchically ordered nano-, micro-, and meso-scale structural units [5][6][7]. The characteristic sizes of bone structural units are in the range from 1 nanometer to 500 micrometers [8].…”