The philosophy of anatomical stems was introduced into the market during the 1980's with the aim to obtain the best press-fit in the metaphyseal femur using a design following the natural geometry of the proximal femur. The MiniMAX is an anatomical cementless stem engineered to provide the best fit and fill in the metaphyseal femur following the natural shape of the femoral canal [1,2]. The length of the stem and the shape have been studied size by size and have shown to be bone preserving and to provide good mechanical stability [3].