Designation:F2009−00(Reapproved2011)StandardTestMethodforDeterminingtheAxialDisassemblyForceofTaperConnectionsofModularProstheses1ThisstandardisissuedunderthefixeddesignationF2009;thenumberimmediatelyfollowingthedesignationindicatestheyearoforiginaladoptionor,inthecaseofrevision,theyearoflastrevision.Anumberinparenthesesindicatestheyearoflastreapproval.Asuperscriptepsilon(´)indicatesaneditorialchangesincethelastrevisionorreapproval.1.Scope1.1Thistestmethodestablishesastandardmethodologyfordeterminingtheforcerequired,underlaboratoryconditions,todisassembletapersofimplantsthatareotherwisenotintendedtorelease.Someexamplesarethefemoralcomponentsofatotalorpartialhipreplacementorshoulderinwhichtheheadandbasecomponentaresecuredtogetherbyaself-lockingtaper.1.2Thistestmethodhasbeendevelopedprimarilyforevaluationofmetalandceramicheaddesignsonmetaltapersbutmayhaveapplicationtoothermaterialsanddesigns.1.3ThevaluesstatedinSIunitsaretoberegardedasstandard.Nootherunitsofmeasurementareincludedinthisstandard.1.4Thisstandarddoesnotpurporttoaddressallofthesafetyconcerns,ifany,associatedwithitsuse.Itistheresponsibilityoftheuserofthisstandardtoestablishappro-priatesafetyandhealthpracticesanddeterminetheapplica-bilityofregulatorylimitationspriortouse.2.ReferencedDocuments2.1ASTMStandards:2E4PracticesforForceVerificationofTestingMachinesF1636SpecificationforBoresandConesforModularFemo-ralHeads(Withdrawn2001)33.SummaryofTestMethod3.1Theaxialdisassemblytestmethodprovidesameanstomeasuretheaxiallockingstrengthofthetaperconnectionformodularprostheses.3.2Followingassembly,anaxialtensileforceisappliedtodisassemblethetaperconnectionandthemaximumforceisrecorded.4.SignificanceandUse4.1Thistestmethodhelpstoassesstheaxiallockingforceofamodulartaper.ExamplesofthesedevicesaredescribedinSpecificationF1636.Sometypesofdevicesthatmayutilizethistypeofconnectionarethemodularshoulderandmodularhipprostheses.Additionalmeansofevaluatingthelockingmechanismsoftapersmaybeappropriate,dependinguponthedesignofthe...
