Active Standard: F1717 - 14
As presently worded, ASTM F1717 does not require that slippage of polyaxial pedicle screw heads during fatigue testing be reported. The proposed revision requires that, for polyaxial screw constructs that achieve runout without breakage of components, a quantitative measure of any slippage or deformation (based on changes in center-to-center hinge pin distance) and an explanation of the causal mechanism should be reported.
Keywordsfatigue test methods; spinal implant assembly; spinal implant construct; static test methods ; vertebrectomy model; Fatigue--surgical implant materials; Healthcare delivery models; Dynamic analysis/testing; Spinal implants; Static tests--orthopaedic materials/applications;
Ballot Item Approved
Ballot Item Approved as F1717-2014 and Pending Publication