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TibialisTendonAllograftWidthisIndependentofDonorAgeHeightWeightandGenderIsaacMabeM.S.andShawnA.HunterPh.D.AbstractThisstudywasconductedtodetermineicorrelationsexistedbetweenanteriorposteriortibialistendonwidthsanddonorcharacteristicsoheightweightagegenderandethnicity.Non-parametricstatisticalanal-yseswereconductedondatarom256anteriortibialisdonorsand231posteriortibialisdonors.Ourresultsindicatedthattibialistendonwidthonlyexhibitedlownon-signicantcorrelationswiththeselecteddonorcharacteristics.Donoragewasmostweaklycorrelatedtothewidthobothanteriorandposteriortibialistendons.Tibialistendonwidthswerestatisticallydierentbetweenmaleandemaledonorsbutthisndingisnotlikelytoholdclinicalrelevancebecausethedierencesarehighlyinfuencedbytheresolutionooursizingprotocol.Fromastatisticalperspectivethewidthoanteriorposteriortibialistendonsisnotwellpre-dictedbydonorheightweightageandgender.IntroductionTissuebanksoteneldrequestsromsurgeonsorallograttissuewitholdeddiameterwidthspecications.Atersearch-ingpublicationsonthematternosuchdatacouldbeoundpromptingourinvestigationintowhethercriteriasuchasageheightweightorgendercouldcorrelatetoatissuesoldeddi-ameterwidth.StudyObjectiveTheobjectiveothisstudywastoexaminedonorcharacteris-ticstodeterminethestrengthocorrelationoactorsassoci-atedwithanteriorandposteriortibialistendonoldeddiameterwidths.MethodsDonorswererandomlyselectedduringasix-monthperiodromJanuarythroughJuneo2013.Theinormationcollectedoreachdonorwereheightinweightlbgenderageyearsethnicityandtheassociatedtibialiswidthcm.TendonwidthwasmeasuredaccordingtoCommunityTissueServicescurrentrobustsizingprotocol.Atotalo308donorswereexaminedinthisstudymeanage50.6yearsrange12-70years81emaleand227male.Oneanteriortibialisandoneposteriortibialistendonwererandomlyselectedromeachdonororthestudy.ThenumbersotendonsincludedinthestudyareshowninTable1. CenterforTissueInnovationandResearch2900CollegeDriveKetteringOhio454201-800-684-7783www.communitytissue.orgREV00SM-700-F-11Reerences1.MunroB.H.2005StatisticalMethodsforHealthCareResearchPhilidelphiaLippincottWilliamsandWilkinsp249Table1NumberotendonsexaminedTendonTypeMaleFemaleTotalAnterior18472256Posterior17061231Thedatawasrstexaminedornormality.AllgroupsailedtheShapiroWilkestestP0.05indicatingthatnon-parametricanalyseswererequired.ASpearmanRankOrderCorrelationwasusedoralldataexceptgenderwhichisdistributionindepen-dent.GenderwashandledinadierentmanneraPoint-Biserialanalysishadtobeusedbecausegenderdataisanon-continu-ousnon-numericaltendondescriptor.Anon-parametricMannWhitneytestwasalsoruntocomparetheinfuenceodonorgenderonthetibialistendonwidth.Weightlbheightinageyearsandgenderwereusedascorrelationactors.Ethnicitywasomittedtoavoidstatisticalbiaseswithinthedatasincethemajority82.3othedonorpopulationwasCaucasian.ResultsTheresultsotheSpearmanrankordercorrelationarepresent-edinTable2.TheSpearmancorrelationactorisanumberrom-1to1indicatingthestrengthocorrelation.Avalueo1in-dicatesaperectcorrelationavalueo-1indicatesaperectlynegativecorrelationandavalueo0indicatesnorelationshipbetweenactors.ThevalueotheSpearmanactorindicatescorrelationstrengthasollows0.00-0.25VeryLowtoNone0.26-0.49Low0.50-0.69Moderate0.70-0.89High0.90-1.00VeryHigh1.Table2CorrelationactorsbetweendonordemographicsandtendonwidthAnteriorTibialisPosteriorTibialisHeightin0.449Low0.316LowWeightlb0.390Low0.334LowGender0.379Low0.260LowAgeyears0.184VeryLow0.167VeryLowForbothanteriorandposteriortibialistheMann-Whitneytestshowedthatthewidthotendonsrommaledonorswassigni-icantlygreaterthanthatromemaledonorsTable3p