文档介绍：CervicalSpinefractures…1CervicalAnatomyBiomechanicallySpecializedSupportof“large”CranialmassLargerangeofmotionFlexion/extensionAxialrotationUniqueosteologicalcharacteristics2C1-AtlasNobody2articularpillarsFlatarticularsurfaceVertebralarteryforamen2archesAnteriorPosteriorVertebralarterygroove3Function–TheAtlasTransitionzonebetweenheadandc-spineImportantanatomicalpointsSuperiorarticularprocessesallowflex/monfracturesite4C2AnatomyDensEmbriologicalC1bodyBasepoorlyvascularizedOsteoporoticFlatC1-2jointsVertebralarteryforamenaInferomedialtosuperolateral5Anatomy–TheAxisImportanttransitionpointforforceswithinthec-spineImportantanatomicalpointsSuperiorandinferiorarticularprocessesare“offset”intheAPdirection-duetodifferentfunctionsateacharticulationParsinterarticularis-duetothistransitionisafrequentfracturesiteOdontoidprocess-the“pivot”forrotation6Anatomy–TheLigamentsAllowforthewideROMofupperC-ordingtolocationwithrespecttovertebralcanalInternal:TectorialmembraneCruciateligament–includingtransverseligamentAlarandapicalligamentsExternalAnteriorandposterioratlanto-occipitalmembranesAnteriorandposterioratlanto-iputC1C2TranverseLigamentC1-ipitalCondyle10