ASTM_F_1875_-_98_2014.pdf

Designation:F187598(Reapproved 2014)Standard Practice forFretting Corrosion Testing of Modular Implant Interfaces:Hip Femoral Head-Bore and Cone Taper Interface1This standard is issued under the fixed designation F1875;the number immediately following the designation indicates the year oforiginal adoption or,in the case of revision,the year of last revision.A number in parentheses indicates the year of last reapproval.Asuperscript epsilon()indicates an editorial change since the last revision or reapproval.1.Scope1.1 This practice describes the testing,analytical,and char-acterization methods for evaluating the mechanical stability ofthe bore and cone interface of the head and stem junction ofmodular hip implants subjected to cyclic loading by measure-ments of fretting corrosion(1-5).2Two test methods describedare as follows:1.1.1 Method IThe primary purpose of this method is toprovide a uniform set of guidelines for long-term testing todetermine the amount of damage by measurement of theproduction of corrosion products and particulate debris fromfretting and fretting corrosion.Damage is also assessed bycharacterization of the damage to the bore and cone surfaces(4,5).1.1.2 Methods IIThis method provides for short-termelectrochemical evaluation of the fretting corrosion of themodular interface.It is not the intent of this method to producedamage nor particulate debris but rather to provide a rapidmethod for qualitative assessment of design changes which donot include material changes(1-4).1.2 This practice does not provide for judgment or predic-tion of in-vivo implant performance,but rather provides for auniform set of guidelines for evaluating relative differences inperformance between differing implant designs,constructs,ormaterials with performance defined in the context of theamount of fretting and fretting corrosion.Also,this practiceshould permit direct comparison of fretting corrosion databetween independent research groups,and thus provide forbuilding of a data base on modular implant performance.1.3 This practice provides for comparative testing of manu-factured hip femoral heads and stems and for coupon typespecimen testing where the male taper portion of the modularjunction does not include the entire hip implant,with the taperportion of the coupon identical in design,manufacturing,andmaterials to the taper of the final hip implant(4,5).1.4 Method I of this practice permits simultaneous evalua-tion of the fatigue strength of a femoral hip stem(in accordancewith Practice F1440)and the mechanical stability and debrisgenerated by fretting and fretting corrosion of the modularinterface.1.5 The general concepts and methodologies described inthis practice could be applied to the study of other modularinterfaces in total joint prostheses.1.6 The values stated in SI units are to be regarded asstandard.No other units of measurement are included in thisstandard.1.7 This standard may involve hazardous materials,operations,and equipment.This standard does not purport toaddress all of the safety concerns,if any,associated with itsuse.It is the responsibility of the user of this standard toestablish appropriate safety and health practices and deter-mine the applicability of regulatory limitations prior to use.2.Referenced Documents2.1 ASTM Standards:3E4 Practices for Force Verification of Testing MachinesE466 Practice for Conducting Force Controlled ConstantAmplitude Axial Fatigue Tests of Metallic MaterialsE467 Practice for Verification of Constant Amplitude Dy-namic Forces in an Axial Fatigue Testing SystemF561 Practice for Retrieval and Analysis of MedicalDevices,and Associated Tissues and FluidsF746 Test Method for Pitting or Crevice Corrosion ofMetallic Surgical Implant MaterialsF897 Test Method for Measuring Fretting Corrosion ofOsteosynthesis Plates and ScrewsF1440 Practice for Cyclic Fatigue Testing of MetallicStemmed Hip Arthroplasty Femoral Components Without1This practice is under the jurisdiction ofASTM Committee F04 on Medical andSurgical Materials and Devices and is the direct responsibility of SubcommitteeF04.15 on Material Test MethodsCurrent edition approved Oct.1,2014.Published November 2014.Originallyapproved in 1998.Last previous edition approved in 2009 as F1875 98(2009).DOI:10.1520/F1875-98R14.2The bold face numbers in parentheses refers to the list of references at the endof this standard.3For referenced ASTM standards,visit the ASTM website,www.astm.org,orcontact ASTM Customer Service at serviceastm.org.For Annual Book of ASTMStandards volume information,refer to the standards Document Summary page onthe ASTM website.Copyright ASTM International,100 Barr Harbor Drive,PO Box C700,West Conshohocken,PA 19428-2959.United States1 Torsion(Withdrawn 2012)4F1636 Specification for Bores and Cones for Modular Femo-ral Heads(Withdrawn 2001)4G3 Practice for Conventions Applicable to ElectrochemicalMeasurements in Corrosion TestingG5 Reference Test Method for Making PotentiodynamicAnodic Polarizati