ASTM F1877 - 05(2010)

    Standard Practice for Characterization of Particles

    Active Standard ASTM F1877 | Developed by Subcommittee: F04.16

    Book of Standards Volume: 13.01


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    Significance and Use

    The biological response to materials in the form of small particles, as from wear debris, often is significantly different from that to the same materials as larger implant components. The size and shape (morphology) of the particles may have a major effect on the biological response; therefore, this practice provides a standardized nomenclature for describing particles. Such a unified nomenclature will be of value in interpretation of biological tests of responses to particles, in that it will facilitate separation of biological responses associated with shape from those associated with the chemical composition of debris.

    The quantity, size, and morphology of particles released as wear debris from implants in vivo may produce an adverse biological response which will affect the long term survival of the device. Characterization of such debris will provide valuable information regarding the effectiveness of device designs or methods of processing components and the mechanisms of wear.

    The morphology of particles produced in laboratory tests of wear and abrasion often is affected by the test conditions, such as the magnitude and rate of load application, device configuration, and test environment. Comparison of the morphology and size of particles produced in vitro with those produced in vivo will provide valuable information regarding the degree to which the method simulates the in vivo condition being modeled.

    1. Scope

    1.1 This practice covers a series of procedures for characterization of the morphology, number, size, and size distribution of particles. The methods utilized include sieves, optical, SEM, and electrooptical.

    1.2 These methods are appropriate for particles produced by a number of different methods. These include wear test machines (Test Method F732), total joint simulation systems (Guides F1714 and F1715), abrasion testing, methods for producing particulates, such as shatter boxes or pulverizors, commercially available particles, and particles harvested from tissues in animal or clinical studies.

    1.3 The debris may include metallic, polymeric, ceramic, or any combination of these.

    1.4 The digestion procedures to be used and issues of sterilization of retrieved particles are not the subject of this practice.

    1.5 A classification scheme for description of particle morphology is included in Appendix X3.

    1.6 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.7 As a precautionary measure, removed debris from implant tissues should be sterilized or minimally disinfected by an appropriate means that does not adversely affect the particulate material. This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    C242 Terminology of Ceramic Whitewares and Related Products

    C678 Test Method for Determination of Particle Size Distribution of Alumina or Quartz Using Centrifugal Sedimentation

    E11 Specification for Woven Wire Test Sieve Cloth and Test Sieves

    E161 Specification for Precision Electroformed Sieves

    E766 Practice for Calibrating the Magnification of a Scanning Electron Microscope

    E1617 Practice for Reporting Particle Size Characterization Data

    F561 Practice for Retrieval and Analysis of Medical Devices, and Associated Tissues and Fluids

    F660 Practice for Comparing Particle Size in the Use of Alternative Types of Particle Counters

    F661 Practice for Particle Count and Size Distribution Measurement in Batch Samples for Filter Evaluation Using an Optical Particle Counter (Discontinued 2000)

    F662 Test Method for Measurement of Particle Count and Size Distribution in Batch Samples for Filter Evaluation Using an Electrical Resistance Particle Counter (Discontinued 2002)

    F732 Test Method for Wear Testing of Polymeric Materials Used in Total Joint Prostheses

    F1714 Guide for Gravimetric Wear Assessment of Prosthetic Hip Designs in Simulator Devices

    F1715 Guide for Wear Assessment of Prosthetic Knee Designs in Simulator Devices


    ICS Code

    ICS Number Code 19.120 (Particle size analysis. Sieving)

    UNSPSC Code

    UNSPSC Code 41113903(Particle size measuring apparatus)


    DOI: 10.1520/F1877-05R10

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