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`Page 2 of 13
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`Fig. 1. A longitudinal section at the proximal part ofa femoral bone specimen shows the thick wallofoortical
`bone tissue at the shaft gradually tapering oil"at the metaphyseal region. At the femoral head the cortical bone
`represents only a thin shell continuous with the underlying trabecular bone network. This trabecular network
`already shows at the macroscopical level a varying porosity. A cartesian coordinate system is superimposed
`on the femoral neck for specimen orientation.
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`7/11
`////1
`//////////////////A 7////////////////////////
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`MICROMETER-SCREW
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`DISPLACEMEN1’-LIMITER (R)
`EXTENSOMETER (Bl
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`HYDRAULIC CYLINDER
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`SPECIMEN
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`STEEL BALL
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`LOAD CELL (Fl
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`Fig, 2(a) Diagrammatic drawing of the testing equipment. (b) up view pf trabeculanbone specimen
`placed between two flat platens. The downwards displacement With a predetermmsted excursion of the upper
`platens results in a controlled deformation of the test specimen.
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`Fig. 6. An arrangement of cancellous bone into three sets of lamellae can be observed at the upper femoral
`region. The sheets are lined up along the directlon ofthese lameflae and the interconnecting struts can also
`been seen.
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`Fig. 7. A scanning electron microscopic View of the cancellous bone at the upper femur also reveals the sheet
`and strut arrangement of the cancellous frame work.
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`Page 7 of 13
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`Page 8 of 13
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`Page 9 of 13
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`Page 10 of 13
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`Page 11 of 13
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