Testing of Hip Implants

A hip joint implant—also called a hip prostheses or hip endoprostheses—may be necessary in the event of stiffening of the hip joint or hip arthrosis (coxarthrosis).In general, a hip joint implant consists of a femoral stem, the femoral head, the acetabular shell and a plastic or ceramic inlay.A hip joint implant and its individual components are subjected to both static and dynamic testing.

Testing of hip joint implants (hip prostheses or hip endoprostheses)

Important test standards and tests for hip implants

ISO 7206-4 and ISO 7206-6 Dynamic endurance properties testing of stemmed femoral components and neck region of stemmed femoral components

Endurance properties testing stemmed femoral components and neck region of stemmed femoral components

ISO 7206-4, ISO 7206-6

Describes the high cycle fatigue test to ISO 7206-4 on the stemmed femoral components and ISO 7206-6 on the neck region of stemmed femoral components.

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Compression/pull-off test femoral head

ISO 7206-10

ISO 7206-10 specifies the requirements on the testing system for the determination of resistance to static load of modular femoral heads.

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Deformation test method acetabular shell

ISO 7206-12

ISO 7206-12 specifies a test method and the test conditions for determining short-term deformation of a press-fit acetabular component.

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Torsion test femoral head

ISO 7206-13

ISO 7206-13 specifies a test method for the determination of resistance to torque between the femoral head and neck, or the stem.

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Forces for disassembly of acetabular shell / liner

ASTM F1820

The ASTM F1820 standard specifies different test methods for determining the forces for disassembly between the acetabular shell and liner

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Tensile test femoral head

ASTM F2009

The ASTM F2009 standard specifies a test method for determining the required disassembly force of the taper connection between the femoral head and femoral shaft.

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Fatigue strength ceramic femoral heads

ASTM F2345

The ASTM F2345 standard covers determination of the static and cyclic fatigue strength of ceramic modular femoral heads.

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Fatigue testing modular femoral stems

ASTM F2580

The ASTM F2580 standard specifies a test method for fatigue testing of metallic femoral stems with metaphyseal fixation.

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