Abstract: This study explores the phenomenon by identifying the causes of stress shielding and some of the factors, which may reduce its effect on the femoral bone. There are several factors that influence stress shielding including the designs of implant stem geometry and the chosen of an implant material. These two factors can be mathematically proved by identifying how load was transferred in composite material. For this matter, only axial load was taken into account. The effects at bone/cement and cement/stem interfaces and force due to bending will be also considered.