Recent biomechanical studies have shown that a better fit between the prosthesis and bone results in improved stress transfer and reduced micromotion at the implant/bone interface which suggests extended device longevity. In addifion to improved stress stransfer and reduced micromotion, fit can also have a favorable affect on bone maturation and pull-out strength. The purpose of this study was to evaluate the fit of five contemporary orthopaedic femoral hip implants. Using radiographs of bones (60 cases of adult cadaver femur) and templates of devices, the optimal size and position of the implant was determined, while the gap between the profile of the device and the endosteal surface was measured. The press-fit hip stem design (PFC) had much more improved stem-canal contact on total and priority regions. And the other four devices had better fit proximally than distally and vice-versa (proximal-distal mismatch). The improvement of fit can be achieved by considering the proximal-distal geometry of the femur more carefully and by diversifying the stem design which adapts to the anatomical variation of femur.