addresses an important issue raised by our Interlaboratory Studies: some users of F1717 test clock-wise and others test counter-clock-wise. This is despite Figures 2 and 3 showing the upper (cephalad) block rotating clockwise with respect to the lower (caudad) block. Therefore, I am balloting a new section to clarify this by specifically stating the direction of rotation.
fatigue 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;
Citing ASTM Standards
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