Abstract
Artificial hip joint which has been made of fiber reinforced plastics has advantages of high degree of freedom of the design parameters. Artificial hip joint consists of three parts, Cup, Head and Stem. In the artificial hip joint, the fixation of cup and pelvis is very important. Therefore, we made cups which have protuberances on surface and evaluated the mechanical characterization for the cups. In this study, the target is an evaluation of mechanical characterization for artificial joint cup considering various surface shapes, and the torsion-compression test has been carried out for the estimation of fixed torque using a cup with different density of protuberances and shape of different protuberances.
