ASTM WK35256

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Work Item: ASTM WK35256 - Revision of F1717 - 11aStandard Test Methods for Spinal Implant Constructs in a Vertebrectomy Model

Active Standard: F1717-11a

Developed by Subcommittee: F04.25 | Committee F04 Home | Contact Staff Manager

1. Rationale

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.

Keywords

Citing ASTM Standards

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Work Item Status:
Date Initiated: 11-16-2011
Technical Contact: Floyd Larson

Item: 028
Ballot: F04 (13-01)
Status: Negative Votes Need Resolution

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