Gait adaptationsarepersistentaftertotalhiparthroplastyandcandependonthetypeofsurgery.This studyfocusedontwosurgicalapproaches:anteriorandlateral.Toanalyzegaitadaptations, biomechanicalanalysesusuallyemployan a priori selectionoftheparametersthatleadstoincomplete or redundantinformation.Incontrast,PrincipalComponentAnalysis(PCA)providesanefficient transformationofthedatasetbyautomaticallyidentifyingthemajorsourcesofvariability.Thepurpose of thisstudywastoinvestigatedifferencesinlevel-walkingamongthreegroupsofparticipantsusing PCA:patientsundergoingananteriorsurgicalapproach,patientsundergoingalateralsurgical approach,andhealthycontrols.Biomechanicaldescriptionsoftheextractedprincipalcomponents aidedintheinterpretationofthestatisticallysignificantresultsobtainedfrommultivariateanalysisof covariance(MANCOVA)tests.Apointsystemwasintroducedtosummarizetheresultsandguidethe interpretation.PCAcapturedreducedmagnitudeinsagittalandfrontalmomentsintheanterior approachgroup,andreducedsagittalpeaksangleinthelateralgroup,aspreviouslyfoundwith traditionalanalyses.PCAalsoidentifiedsignificantpatterndelaysintheanteriorgroup,unnoticedin previousstudies.Inconclusion,neithersurgicalapproachrestorednormalgaitfunctionalitybecause lower extremitykineticsandkinematicsalterationspersistedat300-dayfollow-upafterthesurgery, regardlessofthetechnique.
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Titolo: | Comparison of total hip arthroplasty surgical approaches by Principal Component Analysis. |
Autori: | |
Data di pubblicazione: | 2012 |
Rivista: | |
Abstract: | Gait adaptationsarepersistentaftertotalhiparthroplastyandcandependonthetypeofsurgery.This studyfo...cusedontwosurgicalapproaches:anteriorandlateral.Toanalyzegaitadaptations, biomechanicalanalysesusuallyemployan a priori selectionoftheparametersthatleadstoincomplete or redundantinformation.Incontrast,PrincipalComponentAnalysis(PCA)providesanefficient transformationofthedatasetbyautomaticallyidentifyingthemajorsourcesofvariability.Thepurpose of thisstudywastoinvestigatedifferencesinlevel-walkingamongthreegroupsofparticipantsusing PCA:patientsundergoingananteriorsurgicalapproach,patientsundergoingalateralsurgical approach,andhealthycontrols.Biomechanicaldescriptionsoftheextractedprincipalcomponents aidedintheinterpretationofthestatisticallysignificantresultsobtainedfrommultivariateanalysisof covariance(MANCOVA)tests.Apointsystemwasintroducedtosummarizetheresultsandguidethe interpretation.PCAcapturedreducedmagnitudeinsagittalandfrontalmomentsintheanterior approachgroup,andreducedsagittalpeaksangleinthelateralgroup,aspreviouslyfoundwith traditionalanalyses.PCAalsoidentifiedsignificantpatterndelaysintheanteriorgroup,unnoticedin previousstudies.Inconclusion,neithersurgicalapproachrestorednormalgaitfunctionalitybecause lower extremitykineticsandkinematicsalterationspersistedat300-dayfollow-upafterthesurgery, regardlessofthetechnique. |
Handle: | http://hdl.handle.net/11391/929583 |
Appare nelle tipologie: | 1.1 Articolo in rivista |