The formulation of the initial boundary problem of adaptive poroelasticity and it uniaxial implementation for region of femoral neck subjected to axial compression by three threaded screw fixators resulting from the surgical operation of its osteosynthesis after the bone fracture is a topic of the present paper. The constitutive phenomenological relationship of medium has been proposed in our previous paper. The spongy bone tissue of the considered femur region is ranked as non-uniform and isotropic. The structural model of the sponge bone tissue consists of solid matrix and the hollow spherical pores in it. The rate of the pores radius change has been connected with the strain stimulus of adaptation by the kinetic equation of mezolayer, modify for the sponge bone tissue. Processes in the interfragmental space have not been considered, but compression forces, which gives constant contact of fracture surfaces and usual (non-pathologic) porosity of sponge bone tissue of fragments is necessary conditions of union. The consequences of four mode installation fixators for structure and mechanical properties of bone tissue are discussed. This mode is differentiated by levels of normal stress in bone tissue under turns of thread.