Dynamic Fatigue Tests on Hip Endoprostheses to ISO 7206-4, ISO 7206-6, ISO 7206-8 and ASTM F2068
The servohydraulic testing machine HC Compact or the from ZwickRoell are used to simulate dynamic loads on a hip prosthesis stem in accordance with the relevant standards ISO 7206-4, ISO 7206-6, ISO 7206-8 and ASTM F2068. Use of the appropriate ZwickRoell embedding device enables the mechanical conditions specified in the standard, such as the orientation of the hip joint prosthesis to the test load or the embedding height, together with the angle of load application, to be defined with accuracy.
- On the one hand, dynamic loading on the hip endoprosthesis stem while walking with an implant that is already loosening is simulated in order to check the stem life expectancy. On the other hand, alternating loading is applied to the neck region of the prosthesis, which is clinically well-anchored.
- In addition, the ZwickRoell software allows you to run user-friendly progressive load tests (Locati tests). These tests can be implemented under physiological environmental conditions (for example, temperature-conditioned saline solution) with the use of the ZwickRoell temperature conditioning vessel.
- This enables you to perform a corrosion test to ASTM F1875, which tests a modular junction's resistance to crevice corrosion and fretting corrosion under dynamic load.