Expulsion Test PI-52

Normative References (internal)  

PI-52 (accredited procedure): Expulsion test – spinal implants

The purpose of this test is to determine the mechanical resistance of spinal implants against expulsion loads. This test can be used for lumbar and cervical cages as well as for VBRs. Polyurethane blocks matching the outer shape of the implants are used to simulate the vertebras. An axial preload is applied and the implant is pushed in a-p or p-a direction until a predefined motion occurs. Typically six implants are tested.