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1、【摘要】目的為顳下經(jīng)小腦幕入路提供相關(guān)顯微解剖學基礎(chǔ)。方法10%福爾馬林固定成人頭顱濕標本10例(20側(cè))。模擬顳下經(jīng)小腦幕入路觀察小腦幕切開前后的顯露范圍及周圍重要結(jié)構(gòu)的解剖關(guān)系,并進行測量拍照。結(jié)果顳下入路切開小腦幕之前,暴露的上界平后床突,下界平小腦幕。包括動眼神經(jīng)起始部至入海綿竇后壁,后交通動脈全長,大腦后動脈的P1P2段,基底動脈的上部和分叉部。動眼神經(jīng)及后床突可作定位小腦幕中切跡周圍結(jié)構(gòu)的解剖標志。后巖床皺襞與小腦幕緣的交點為標志點可定位滑車神經(jīng)入小腦幕點。幕切開后可明顯改善對幕下結(jié)構(gòu)的顯露,如小腦前下動脈(Aica)的顯
2、露,顯露三叉神經(jīng)(Trig.N)的橋池段,及面聽神經(jīng)的顯露。結(jié)論采用顳下經(jīng)小腦幕入路可增大對幕下結(jié)構(gòu)的顯露,適合切除累及幕上下及騎跨中后顱窩的巖斜區(qū)腫瘤?!娟P(guān)鍵詞】手術(shù)入路;顯微解剖;小腦幕MicrosurgicalAnatomyoftheSubtemporalTranstentorialApproach SchoolofClinicalMedicine,NingxiaMed.Univ.,Yinchuan750004 Abstract:ObjectiveToprovidetheanatomicbasesforthesubtempo
3、raltranstentorapproach.MethodsThesubtemporaltranstentorapproachwassimulatedin10(20sides)formalinfixedcadavericadultheads.Beforeandaftertentorialincision,theexposedareaofpetrousapexareaandtheimportantmicroanatomystructuresurroundingwasmeasuredandphotographed.ResultsBefo
4、rethetentorialcut,thescoperevealedwasuptothepostclinoidanddowntothetentorial.Itincludedtheoculomotornerve,thetotallengthoftheposteriorcommunicatingartery,theposteriorcerebralarterysegmentP1,P2,andtheupperbasilarartery.Thepointofintersectionofpostbedrockfoldsandtentoria
5、ledgecouldbetargetedthepointofTrochlearnerveintothetentorial.Tentorialwascuttoimprovethestructureunderthetentorial,suchastheAica,Trig.NFacialnerveandauditorynerve.ConclusionThesubtemporaltentorialapproachcanincreasetheappearanceofthestructureunderthetentorialandbeSuitab
6、leforresectioninvolvingupperandlowertentorialtumors,ridingthemiddleandposteriorcranialfossaorpetroclivalregiontumors. Keywords:surgicalapproach;microanatomy;tentorial 巖斜區(qū)腫瘤位置深在,周圍毗鄰腦干及重要神經(jīng)血管結(jié)構(gòu),腫瘤全切較困難,且術(shù)后并發(fā)癥較多,一直被認為是顱底外科的難點之一。抵達此區(qū)的手術(shù)入路較多,如顳下經(jīng)硬膜外入路(Kawase入路)、乙狀竇前入路、幕上下
7、聯(lián)合入路和枕下乙狀竇后經(jīng)巖骨脊入路等。本研究主要對顳下經(jīng)小腦幕入路進行顯微解剖學研究,旨在尋找恒定的解剖標志點,小腦幕切開方式以指導臨床手術(shù)?! ?材料與方法 1.1材料 10例經(jīng)10%甲醛溶液固定的國人成人頭顱濕標本,使用紅-藍乳膠分別灌注雙側(cè)頸內(nèi)動脈、椎動脈和頸內(nèi)靜脈。locatedintheTomb,DongShenJiabang,deferthenextdayfocusedontheassassination.Linping,Zhejiang,1ofwhichliquorwinemasters(Wuzhensaidinfo
8、rmationisCarpenter),whogotAfewbayonets,duetomissedfatal,whennightcame 1.2儀器 XSZ-4D型手術(shù)顯微鏡(鎮(zhèn)江中天光學儀器有限責任公司生產(chǎn))及顯