Fatigue Testing of Acetabular Components
Test method for evaluating fatigue of acetabular THR cups. A cyclic load is applied to an acetabular cup fixed at a 55 deg angle to the load direction until run-out or failure of the cup. An arc beneath the loaded area of the cup is unsupported to simulate clinical bone loss conditions. Testing is performed either in air at ambient temperature or in fluid at body temperature. This test method is applicable to mono-block and modular acetabular components.