Stress shielding of femoral component with and without collar

Stress shielding in metallic implants used in total hip arthroplasty is often mentioned as the cause of loosening in many clinical cases. In this study the stress shielding was evaluated in Ti6Al4V alloy commercial femoral components with and without collar. The results from the strain gauge measurements showed that the stress shielding was lower for femoral components collar than that seen without collar.