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1、万方数据天津医科大学硕士学位论文②Theangulardisplacementofeachcervicalsegmentintheyounggroupisgreaterthanintheoldgroupduringtheobservedcervicalrangeofmotion(ROM);theangulardisplacementofeachcervicalsegmentinextensionpositionishigherthaninflexionposition.@Thecervicalsegmentaveragea
2、ctivityandtheaveragetotalactivitypresentsignificanceduring1/2flexiontoneutralpositionintheyounggroup,thecervical4/5segmenthasthemaximumactivity.@Theaverageactivityandaveragetotalactivityintheyounggroupisgreaterthanintheoldgrouponlyinthecervical4/5segment.⑨Thediffe
3、renceexitsonlyintheintervertebralfrontalheight、middlespaceheightratioin1/2extensionofcervical4/5segmentandinthesegmentofC5/6,thedifferenceexitsinallexceptfortheintervertebralfrontalheight、middlespaceheightratioinneutralposition.@Cervicalcurvatureangleexitstatistic
4、aldifferencebetweenthetwogroups,whichisgreaterintheyounggroupthanintheoldgroup.Conclusion:@DynamicX-rayexaminationofthecervicalspinecanbeagoodassessmentofeachcervicalsegmentmovement.@ExtensionpositionCanbemoremeaningfulwhenobservedthecervicalspineinstabilitybyangu
5、lardisplacement.③Theangulardisplacementofeachcervicalsegmentintheyoungmanisgreaterthanintheoldman,todeterminethecervicalspineinstabilitybyWhitemethod,agefactorshouldbeconsidered.@Thecervical4/5segmenthasthemaximumactivityintheyounggroup,whichexitsstatisticaldiffer
6、encecompared、Ⅳitlltheoldgroup,thecervical4/5segmentshouldbeconcemedwhenevaluatingearlycervicaldiscdegenerationbycervicalactivity.@Dynamicmeasurementofthe5/6intervertebralspacehasagreatvaluetoassessthecervicaldegenerativechanges.@Cervicalcurvatureanglecanbeusedtoas
7、sessearlydegenerativechangesinthecervicalspine.Keywords:CervicalvertebraDynamicX.rayexaminationAngulardisplacementCervicalcurvatureangleCervicalactivityCervicalintervertebralspaceheightratioIV万方数据天津医科大学硕士学位论文目录中文摘要⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.IAbstract.⋯.⋯⋯⋯.⋯⋯..
8、...⋯.⋯...⋯.⋯.⋯⋯..⋯⋯..⋯.⋯.⋯.⋯.⋯⋯.⋯.⋯.⋯.⋯.⋯⋯.⋯⋯⋯..⋯III缩略词表⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯.Ⅶ前言⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯1日U舌⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯⋯
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