简介：spinalmotionpivot,spinalmanipulation,theangleoffacetjoint,forcedirection,cylinderpivotmotiontheoryThespinaljointconsistsofadiscandposteriorfacetjoints.Itisthebiomechanicalstructurethatenablesthespinewithsix(6)freedomsofmovementsofflexion/extension,sidebendsandrotations.Weidentifiedthatthesamespinaljointsinitiate,eliminateandcontrolspinalmovement.Thesefourjointsaretheatlanto-occipitalandtheatlanto-odontoidjoints,C7/T1,T12/L1andL5/S1.Theword“pivot”iscommonlyusedtodescribeanimportantruruingporintormatterinChineselanguage.Wedefinetheabovefourjointsas“pivots”inthisarticle.Thejointsarebriefedas“Occipital-vertebralpivot”(atlanto-occipitalandatlanto-odontoidjoint),“cervicalthoracicpivot”(C7/T1),“thoracic-lumbarpivot”(T12/L1)and“lumbar-sacrumpivot”(L5/S1).Aftermeasuring20humanspinalcolumns(drybones),observingtheanglebetweenthevertebralbodyandtheinferiorarticularfaeet,reviewingthespinalanatomyandbiomechanicsandanalyzingtheChinesespinalmanipulationtechniquesandtheory,thefollowingisourreport:
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