Influence of the mean magnitude of the Haversian canals’ radii on the values of the technical elastic parameters of hip and tibia cortical bone tissue is studied in this article. Cortical bone tissue is assumed elastic media with orthotropic symmetry of properties. The method and the numerical experiments’ results are presented. The ten functions such as Young’s modules, Poison’s ratios, shear modules and volumetric strain’s module of the Haversian canals’ radius are search out determined by fitting the numerical experiments’ dates. The received results are new, reflecting the effect of the structural parameters to the technical parameters of elasticity of the cortical bone tissue. The functional advisability of the Haversian canals’ location is confirmed. The fined functions allow to calculate the unknown constants of the constitutive equations of the cortical bone tissue adaptive poroelastisity.