Abstract
ASTM F382 and ISO 9585 utilize Four-point Bending Test Method (FBTM) to evaluate the most vulnerable loading performance of bone plates. However, the pin boundaries in FBTM are unable to reflect practical physiological loading patterns for bone plates, and unstable, which makes the test result hard to be repeated. Considering the above, this study proposes a test method designed based on practical physiological loading patterns with stable boundaries. All key indexes required by ASTM F382 and ISO 9585 can be equivalently obtained through the proposed test method/platform. The validity of the proposed test method/platform has been verified through experimental study and Finite Element analysis through the comparison between FBTM and the proposed test method. The stable boundaries guarantee stable test results, in which the relative deviation ratio is 2.625% for the test curve, and the relative standard deviation is 1.613% for rotational bending stiffness and 6.034% for yield bending moment.
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