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Periostealpseudotumorincomplextotalkneearthroplastyresemblinganeoplasticprocess

WorldJournalofOrthopedics 页数: 6 2018-05-18
摘要: Thiscasereportdescribesindetailanerosivedistaldiaphysealpseudotumorthatoccurred6yearsafteracomplexendoprosthetichingetotalkneearthroplasty(TKA).AfemalepatienthadconversionofakneefusiontoanendoprosthetichingeTKAattheageof62.Atherscheduled6-yearfollow-up,shepresentedwithmilddistalthighpainandradiographsshowinga6-7cmerosivelyticdiaphyseallesionthatlookedverysuspiciousforaneoplasticprocess.Anenblocresectionofthedistalfemurandfemoralendoprosthesiswasperformed.Histologicreviewshowedthemasstobeapseudotumorwiththeweardebrisemanatingfromwithinthefemoralcanalduetodistalstemloosening.Wededucethatmechanizedstemabrasioncreatedmicroscopictitaniumalloyparticlesthatescapedviaasmalldiaphysealcrackandstimulatedaninflammatoryresponseresultinginaperiostealerosivepseudotumor.Themainlessonofthisreportisthat,inthefaceofajointreplacementsurgeryoftheknee,pseudotumorformationisamorelikelydiagnosisthananeoplasticprocesswhenencounteringanexpandingbonymass.Thus,abiopsypriortoenblocresection,wouldbeourrecommendedcourseofactionanytimeasuspiciousmassisencounteredclosetoaTKA. ... (共6页)

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