ASTM F2267-04 “Standard Test Method for Measuring Load Induced Subsidence of Intervertebral Body Fusion Device Under Static Axial Compression” specifies a static axial-compression test carried out in vitro to provide a mechanical comparison between different fusion implants. Testing is carried out with both metallic blocks and polyurethane blocks.

The tests can be carried out on a universal testing system with the moving actuator above in the upper crosshead. However, we recommend the use of either an HST-EFT-A  Electric Dynamic Test Instrument or a HFT-A servohydraulic testing system. These systems allow specialized test fixtures to be combined with a temperature controlled bath, which provides a stable environment for simulation of in vivo conditions.