new technique for early screening of developmental dysplasia the hip用于早期筛查髋关节发育不良新技术.pdfVIP

JournalofPediatricOrthopaedics

23:347–351©2003LippincottWilliamsWilkins,Inc.,Philadelphia

NewTechniqueforEarlyScreeningofDevelopmentalDysplasia

oftheHip:PilotStudy

*KevinS.C.Kwong,Ph.D.,*XiaolinHuang,M.B.,Ph.D.,†JackC.Y.Cheng,M.D.,and

‡JohnH.Evans,Ph.D.

StudyconductedatthePolytechnicUniversity,SAR,

Summary:Anacousticaltechniquehasbeendevelopedforthesefrequencybandswasstronglyindicativeofstructural

earlyscreeningofdevelopmentaldysplasiaofthehip(DDH)inasymmetryweenbothhips,andtherewasasignificantdif-

neonatesbycomparingthesoundtransmittedacrossthehipsferencweennormalneonatesandpatientswithunilateral

whileavibratoryforcewasappliedtothesacrum.ThebaselineDDH.Bysettingthecut-offdiscrepancyat2.0dB,thebest

for90normalneonateshasbeenestablishedandtestsinthesensitivity(100%)wouldbeachieved,andthiscouldbepro-

frequencybandsof200,250,and315Hzwerefoundtobeposedasthethresholdforwide-scalescreeningofDDH.Key

mosteffective,achievinghighcoherenceandsmallestdiscrep-Words:Acoustictransmission—Developmentaldysplasiaof

ancy.SixteenpatientswithunilateralDDHwereexaminedandthehip—Neonatalscreening.

theresultssuggestedthatcoherencebelow0.8inatleastoneof

Developmentaldysplasiaofthehip(DDH)isacom-dependent.Itisalsoconsideredinaccuratedueto

mondeformityofthelowerlimb.Earlydiagnosisandquestionableinterobserverandintraobserverreliability.

propertreatmentareimportantinthepreventionofdis-Therehasbeensignificantadvancementintheuseof

ability(17).TheincidenceofDDHvariesconsiderablydiagnosticultrasoundtoconfirmthediagnosisofDDH.

duetogeographicandracialfactorsandalsothescreen-However,operationaldifficultystillex