Hip replacement arthroplasty using porous coating femoral stem has been designed for biologic fixation, its potential for direct attachment of the implant to bone, and it has been shown that the bone remodelling of a porous coating femoral stem is developed with time. We have assessed the roentgenographic findings of 54 porous coating femoral stems with a minimum 3 years follow up period. The results are as follows; 1. Vertical subsidence is developed in one case with unstable fixation femoral stem. 2. Newbone bridging between femoral stem and endosteal surface of femur (spot welds) is seen in 20 cases (37%) of porous coating femoral stem, and endosteal newbone bridging of the intramedullary canal in the tip of stem (pedestal) is developed in 17 cases (31%). 3. Reactive line is shown in 31 cases (57%). 4. Bone remodelling by stress shielding effect is revealed in 53 cases (98%) of porous coating stem, and according to its severity, 26 cases (49%) had the first degree, 20 cases (38%) the 2nd degree, 5 cases (9%) the 3rd degree, and 2 cases (4%) the 4th degree. 5. Radiographic evaluation of bone implant interface showed that 36 cases (67%) had a bony ingrowth fixation, 17 cases (31%) a stable fibrous fixation, and one case (2%) an unstable fixation.