#$%^&*AU2013206430A120140116.pdf#####ABSTRACT An acetabular hip implant includes an acetabular shell component having a first feature and a first insert having a second feature that cooperates with the first featureof the acetabular shell component and further includes a third feature. The implant further includes a second insert having a fourth feature that cooperates with the third feature of the first insert and further includes a fifth feature. A femoral head component includes a sixth feature that cooperates with the fifth feature. Interaction between the first and second features, between the third and fourth features, and between the fifth and sixth features mechanically constrains the acetabular hip implant to prevent dislocation of the femoral head during rotation.2/6 50 26 5276 92 80 75 73 100 796 90 70 72 71 28 95 117 8 94 16 20 182 183 122 11415 110/ 112 113 18 1 1 30 12714 142 12616 125 124 ' 8 6 160 132 102 Fig. 2