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Arquivos de Neuro-Psiquiatria

Print version ISSN 0004-282X

Arq. Neuro-Psiquiatr. vol.53 no.1 São Paulo Mar. 1995 

Surgical considerations about the anterior syphon knee of the internal carotid artery. An anatomical study


Considerações cirúrgicas sobre o joelho anterior do sifão da artéria carótida interna: estudo anatômico



Murilo S. MenesesI, II; Danielle MolinariI; Marcia FortesI; Patricia RangelI; Tatiana NevesI; Ari PedrosoII; Ricardo RaminaII

IDepartment of Anatomy, Federal University of Parana
IIDepartment of Neurosurgery, Curitiba Skull Base Foundation, Curitiba, Brazil




An anatomical study about the anterior knee of the intracavernous carotid artery is presented. Twenty cavernous sinuses (CS) were dissected in cadavers using microsurgical techniques. A fibrous ring around the internal carotid artery (ICA) at the CS roof was found in all specimens. This fibrous attachment could be dissected from the surrounding dura and a loose connective tissue could be demonstrated around the ICA. This anatomical finding makes possible the microsurgical approach to vascular lesions of this portion of the ICA, without opening the cavernous sinus.

Key words: surgical anatomy, infraclinoidal carotid artery, cavernous sinus, fibrous ring.


Apresentamos um estudo anatômico sobre o joelho anterior da porção intracavernosa da artéria carótida interna (ACI). Foram dissecados vinte seios cavernosos de cadáveres utilizando técnicas microcirúrgicas. Um anel fibroso em volta da ACI na parte superior do seio cavernoso foi encontrado em todos os casos. Esta fixação fibrosa pode ser dissecada da dura mater e um tecido conectivo frouxo pode ser visualizado em volta da ACI. Este achado anatômico possibilita o acesso microcirúrgico às lesões vasculares desta porção da ACI, sem abrir o seio cavernoso.

Palavras-chave: anatomia cirúrgica, artéria carótida (porção infraclinóidea), seio cavernoso, anel fibroso.



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Aceite: 9-julho-1994.



Dr. Murilo S. Meneses - Avenida Getúlio Vargas 2159 - 80250-180 Curitiba PR - Brasil.

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