后组筛窦切除扩大经鼻蝶入路的显微解剖分析

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1、后组筛窦切除扩大经鼻蝶入路的显微解剖研究TheMicrosurgicalAnatomyofExtendedTranssphenoidalApproachassociatedwithposterior-ethmoidectomyAbstractobjectiveToexplorethefeasibilityoftreatingparasellaxleisionsbyallextendedtranssphenoidalapproachwitllposterior-ethmoidectomy,whiletherelatedmicrosurgicalstructuresweremeasured．

2、MaterlaIsandmethodsAnatomicalstudyWasfirstcarriedoutwith6samplesobtainedbysplitting3cadaverheadsalongthesagittalmidline．Therelatedanatomicalstructureswerefamiliarized．applicablestructureswereidentified，andthemicrosurgicalstructuresweremeasured．Simulatingsurgerieswereperformedundermicroscopewithan

3、other10intactcadaverheads．ThepathwayoftheapproachWasdetermined．thereachofthesurgicalfieldwiththisextendedprocedureWasdocumented，andtheparasellarstructureswereobserved．Results1．Themainresultsfromanatomicalmeasurementsweredocumentedasfollowing．ThedistancebetweenanteriornasalspinetosphenoidalcrestWa

4、s(59．29生4．39)mm：Thedistancebetweenanteriornasalspinetotheclivuswas(79．62：￡8．86)mm；nletransversediameterofthenasalnotchofthemaxillainsidepiriformapertureWasr23．71：t：1．69)mm；111edistancebetweentheanteriorbordersofbothsphenopalatineforamanWas(24．83士3．36)mm；Theverticaldistancesfromsphenopalatineforam

5、antotheskullbasewere(16．02士2．23)mmintheleftsideandr16．84il．77)mmintherightside．111emaximalintervalbetweenthelateralwallsofbilateralethmoidsinusesattheplaneofanteriorsphenoidalwallwas(30．69士4．03)rnlTl．111edistancesbetweeninternalcarotidarteryoriginoftheophthalmicarteryandtheintemalcornuofopticalne

6、rve—internalcarotidarteryrecesswere(4．25士0．95)mmintheleftside，and(3．75土0．05)intheri曲tside．Thedistancebetweenthemedial¨后组筛窦切除扩大经鼻蝶入路的显微解剖研究borderofthecranialopeningofopticneⅣecanalandposteriorethmoidcanalwas(13．25i2．00)111111intheleftside，and(13．61+1．65)mmintherightside．Thelengthsofopticnerve—inte

7、rnalcarotidarteryrecesswere(7．81士1．55)millintheleftsideand(7．04-a=1．33)nunintherightsiderespectively．Theintervaloftheinternalcarotidarteriesattheplaneoftheirmedialopeningswas(20．24士2．57)mill．TheintervalbetweenDorelloap