The optimal surface for a cementless femoral stem has been the subject of debate for the past several years. Several researchers have stressed the need for research on how an implant surface shape contributes to long-term stability, after implantation, in the field of orthopaedics. The introduction of optimized grooves on an implant surface may enhance long-term stability of an implant. This study thus analyzes the effect of different groove dimensions and angles with a transverse plane on stress transmission by a load at the proximal femur by using finite element analysis. Results suggest that the tendency of stress transmission differs depending on the size, position and angle of the grooves. So, optimized groove size and inclination plays a vital role for long-term stability of cementless femoral stems.

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