ISO 14242-1 Implants for Surgery-Total Abrasion of Hip Joint Prostheses-Loading and Displacement Parameters for Abrasion Testing Machines and Relevant Environmental Conditions for Testing

Material Testing

ISO 14242-1 Implants for Surgery-Total Abrasion of Hip Joint Prostheses-Loading and Displacement Parameters for Abrasion Testing Machines and Relevant Environmental Conditions for Testing

This part of ISO 14242 specifies the relative angular motion between jointed components, the pattern of applied force, the speed and duration of the test, the specimen configuration, and the test environment to be used for abrasion testing of total hip joint prostheses.

ISO 14242-1 Implants for Surgery-Total Abrasion of Hip Joint Prostheses-Loading and Displacement Parameters for Abrasion Testing Machines and Relevant Environmental Conditions for Testing

The femoral and acetabular components of a test specimen are placed in their normal configurations. The tester transmits a certain time varying force between components with certain relative angular displacements. A control sample is subjected to the same time varying force to determine the creep of the test sample or the amount of mass change due to fluid transfer if it is the subject polymers. The test takes place in a controlled environment that simulates physiological conditions.

The acetabular component should have an articulated surface combined with its normal immediate support, unless impractical due to the physical properties of the implant system. If the component making up the articulated surface is secured to the backing with an edge/plug-in system, the processed copy will meet the same fixing conditions.

If the use of normal support or cement fixation is impractical due to the physical properties of the implant system, the support system for the acetabular component should reproduce the design features and conditions for clinical use, but allow removal of the component for measurement.


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