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1、ReviewArticleDroppedHeadSyndrome:EtiologyandManagementAbstractAlokD.Sharan,MDDroppedheadsyndrome(DHS)ischaracterizedbysevereDavidKaye,MDweaknessofthecervicalparaspinalmusclesthatresultsinthepassivelycorrectablechin-on-chestdeformity.DHSismostWilsaM.S.CharlesMalveaux,MD,MAcommonlyassociatedwit
2、hneuromusculardisorders.However,itisnotalwaysaccompaniedbyelectromyographicfindingsorK.DanielRiew,MDnoticeablechangesonmusclebiopsy.Insuchcases,thetermisolatedneckextensorymyopathy(INEM)isusedinstead.TheliteratureonthemanagementofINEMislimited.Mostreportssuggestthatnonsurgicalinterventionshelp
3、tostabilizethedeformity.TheliteratureonsurgicalmanagementofINEMislimitedandmixed,withoutcomesrangingfrompoortoexcellent.TheprevalenceofDHSlikelywillincreaseaslifeexpectancyincreases.Recentadvancesinourunderstandingofsagittalmalalignmentandsurgicaltechniqueshaveimprovedourabilitytoprovidebette
4、rqualityoflifeforpatientswithcervicaldeformity.3roppedheadsyndrome(DHS)muscles.In1992,SuarezandKellyDischaracterizedbysevereweak-proposedasyndromecharacterizednessofthecervicalparaspinalmus-byadroppedheadaccompaniedbycles,resultingingradualsaggingofsevereneckextensorweaknessinthetheheadandcul
5、minatingintheclas-absenceofspecificabnormalitiesonsicchin-on-chestdeformity.Incon-electromyographyormusclebiopsy.4trastwithothercervicalkyphoticFouryearslater,Katzetalpublisheddeformities,suchasankylosingacaseseriesoffourpatientswithspondylitis,DHSisoftencorrectabledroppedheadaccompaniedbyse-
6、FromtheOrthopaedicSpinewithpassiveneckextension.vereneckextensorweaknessinService,MontefioreMedicalCenter,ThetermDHSencompassesawidewhomnospecificabnormalitieswereAlbertEinsteinCollegeofMedicine,rangeofcervicalspinedisorders.Anfound.ThoseauthorscoinedtheBronx,NY(Dr.Sharan),theNYUalternatenamef
7、orDHSiscampto-termisolatedneckextensormyopa-HospitalforJointDiseases,NewYork,NY(Dr.Kaye),theDepartmentcephalia,fromtheGreekwordsthy(INEM)toapplytocasesinofPsychiatry,UCLA–SanFernandocampto,meaning“tobend,”andwhichadroppedheadpresentsasaValley
