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1、6.预设进钉点A、B的距离约15mm；A、C距离约为30mm；预设线与前正中线的理想夹角约20°。7.依据双侧寰枢椎固定预设点，观察其形状基本呈―V‖形，―V‖形顶点夹角约40°，―V‖形双臂长约30~35mm关键词：寰椎；枢椎；经口咽入路；应用解剖；寰枢椎复合体3AppliedAnatomicalStudyinAnteriorFixatingforAtlantoaxialJunctionAbstractObjective:MeasuredbyobservingthenormaladultspecimensandmeasuredusingspiralCTda
2、ta,OnAtlas,AxisandAtlantoaxialcomplexresearch,accordingtodifferentregionsofatlantoaxialfrontofthesofttissuethickness,bloodvesselscourseandinfrontofthestructuralcharacteristics.Theoretically,thesafetyoftherangeofexposure,atlantoaxiallateralmassandtheAxisvertebraldefaultsecurityentry
3、points,entrypointsaway,theentrancedepthandangle,etc.FortheAtlasandtheAxisofanteriorfixationdevicesdesignedtoprovidesafe,reliable,scientificanatomicalbasis.Methods:6.Wemeasured15adultwetspecimens.Thesampleswereplacedontheoperatingtable.Theneckwastippedabout15°.Codmandistractorwasuse
4、dtoopenoropharynx,andthenthesurgicalfieldwasexposure.Wesimulatedcenterapproachofropharynx.Layeredcut,observingandmeasuringthethicknessofsofttissue,thedefaultsecurityentrancepoint.Sneaktothesidetothevertebralanatomyofthelateraledgeofbonystructuresmeasuringmarkandthedistancebetweenth
5、evesselsandnerves,theuppertoAtlas-occipitalmembrane,theloweredgeofthebottomabouttoC2,measuredinfrontofatlantoaxialdistancebetweentheentrancepoint.ThenAfterremovalofsofttissue,wegotcompletelyfreeofcervicalspecimenswherewasfromatlanto-occipitaljointtotheloweredgeofC7,withadigitalcame
6、rapositivecervicalsamples,measuringthedefaultanchorpointtoconnectwiththecenterlineoftheangle.7.Randomsampleof60casesofcervicalspineCTscandataof64rows.InADW4.3workstationtouseitsaccompanyingsoftware,measurementAxislateralmassscrewentrypointoftheentrancedepth,safeandfeasibleentryangl
7、e.AlongthelongAxisofthelateralmassofAtlasasastraightline,measuringtheanglebetweenthelineand4thesagittallineasthelateralmassofAtlasentryangle.Results:AllresultsofthisstudyanalyzedbystatisticalsoftwareSPSS13.0.Becauseofwomenless,thedatawascombinedstatistics.Becauseofthedataleftandrig
8、htsymmetry,nosignificantdi
