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1、·616·CHINESEJOURNALOFCLINICALANATOMYVOL.24NO.62006·应用解剖·椎管内臂丛前后根的显微解剖及其临床意义112111彭田红,李学雷,黄美贤,徐凯,李严斌,李忠华,徐达传(1.南方医科大学解剖学教研室;2.南方医科大学南方医院创伤骨科,广州510515)【摘要】目的:研究臂丛椎管内前后根的显微解剖,为臂丛撕脱伤的诊治提供解剖学基础。方法:在15例防腐灌注红色乳胶的成人尸体的颈胸段标本上,对椎管内臂丛前后根的位置、形态和血供进行观察和测量。结果:臂丛前后根之间有齿状韧带相间隔;前根起始处与脊髓中线的距离从上至下
2、由C5的2.2mm逐渐增大到T1的3.1mm,后根则从C5的4.2mm逐渐减小到T1的2.7mm;前后根与脊髓纵轴的夹角从C5的51.4°、54.8°逐渐减小到T1的21.7°、19.9°;前后根的长度从C5的14.9mm、13.9mm逐渐增大到T1的21.1mm、19.0mm;前后根的直径均以C6最为粗大,分别为2.1mm、3.3mm,后根比相应前根粗;前后根的血供来自椎动脉、颈深动脉和颈升动脉发出的节段性动脉。结论:熟悉臂丛椎管内前后根的显微解剖有助于临床臂丛根性撕脱伤的诊治。【关键词】臂丛;前根;后根;臂丛撕脱伤;显微解剖【中图分类号】R322.
3、85【文献标识码】A【文章编号】1001-165X(2006)06-0616-04MicroanatomyandclinicalsignificanceofnerverootsofbrachialplexuswithinthespinalcanalPENGTian-hong,LIXue-lei,HUANGMei-xian,etal.DepartmentofAnatomy,SouthernMedicalUniversity,Guangzhou510515,China【Abstract】Objective:Toprovideanatomicalbasisf
4、ordiagnoseandtreatmentofrootsavulsionofbrachialplexus.Methods:Theposition,morphologyandbloodsupplyofnerverootsofbrachialplexuswithinthespinalcanalwereobservedandmeasuredon15cervicothoracicsegmentspecimensofadultcadaverperfusedwithredlatex.Results:Theventralrootslayinfrontofthede
5、nticulateligament,whilethedorsalonebehindit.Thedistancefromtheoriginoftheventralrootstothemidlineofspinalcordwas2.2mmforC5and3.1mmforT1,andthelengthofrootswere14.9mm,13.9mmforC5and21.1mm,19.0mmforT1respectively,fromuptodown,alldataincreasedgradually.Onthecontrary,thedistancefrom
6、theoriginofthedorsalrootstothemidlineofspinalcordwere4.2mmforC5and2.7mmforT1,andtheanglefromtherootstothespineofC5~T1spinesegmentswere51.4°,54.8°forC5and21.7°,19.9°forT1,fromuptodown,alldatadecreasedgradually.Atthesamesegment,thediameterofthedorsalrootswasbiggerthantheventralone
7、.C6wasthemost.Thebloodsupplyoftherootscamefromsegmentalarteriesofvertebralarteryanddeepcervicalarteryandascendingcervicalartery.Conclusions:Havinganintimateknowledgeofmicroanatomyaboutbrachialplexusrootsinthespinalcanalwillbefavorabletodiagnoseandtreatbrachialplexusrootsavulsion
8、.【Keywords】brachialplexus;ventralroots;dorsalro
