PI-76: (WK45142) Standard Practice for Mechanical Characterization of Spinous Process Plates
This standard is used for testing of spinous process plates. SPP consists of parallel plates that are clamped around adjacent spinous processes to stabilize the motion segment for fusion. This procedure describes static and dynamic tests by specifying load types and specific methods of applying these loads. The following tests to evaluate and characterize them can be carried out at EndoLab®: Static and dynamic axial compression, static and dynamic torsion, static and dynamic plate dissociation and static pull-off from standard foam.
Dynamic testing can also be performed in combination with particle analysis and ion concentration analysis. Metal-free fixturing is available for this purpose. Common failure modes are, depending on device design, slipping of the implant teeth on the load blocks, plastic deformation and fracture of the device.
