ASTM WK34114

    Work Item: ASTM WK34114 - Revision of F2102 - 06e1 Standard Guide for Evaluating the Extent of Oxidation in Ultra-High-Molecular-Weight Polyethylene Fabricated Forms Intended for Surgical Implants

    (What is a Work Item?)

    Active Standard: F2102 - 13

    Developed by Subcommittee: F04.15 | Committee F04 | Contact Staff Manager



    1. Rationale

    Justification: The edits to this standard reflect the consensus of the task group, which convened in May 2011 in Anaheim, CA. Rationale: Lipid absorption into UHMWPE during in vivo use complicates the evaluation of the extent of oxidation since the lipid absorption peak and the carbonyl absorption peak may overlap. Thus, in order to evaluate the oxidative state of retrieved implants, the lipids should be extracted from the polymer. By submerging the films in a boiling reagent (heptane or hexane) for 6 hours, the lipids can be effectively extracted and allow for evaluation of the extent of oxidation. FTIR spectra showing the carbonyl absorption bands. Note that both reagents effectively extracted the lipids (the lipid absorption peak is centered at approximately 1740 cm-1).


    Keywords

    FTIR; implant; oxidation; oxidation index; UHMWPE;
    Citing ASTM Standards
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    Work Item Status

    Date Initiated:
    07-18-2011

    Technical Contact:
    Steven Kurtz

    Item:
    019

    Ballot:
    F04 (13-01)

    Status:
    Ballot Item Approved as F2102-2013 and Pending Publication