Microanatomy of the lateral wall of sphenoid sinus and the medial wall of the cavernous sinus via transnasal approach
XUE Liang，WANG Shou-sen, WEI Liang-feng, ZHENG He-ping, LU Song-song
Chinese Journal of Clinical Anatomy ›› 2017, Vol. 35 ›› Issue (1) : 1-4.
Microanatomy of the lateral wall of sphenoid sinus and the medial wall of the cavernous sinus via transnasal approach
Objective To study the features of the microanatomy of the lateral wall of sphenoid sinus and the medial wall of the cavernous sinus from the perspective of the transnasal approach and provide morphological basis for relevant operations. Methods With the transnasal endoscopic approach, microdissections were performed on 10 cases of antiseptic cadaveric heads, and then the relationship among nerves, internal carotid artery and the lateral wall of sphenoid sinus were observed in the visual field of microscope； Finally, the length between the anterior nasal spine and orbital opening of canales opticus, internal carotid artery carina was measured, as well as the angle between anterior nasal spine and Abey’s plane. Results Internal carotid artery and optic nerve together formed a “＞”shape prominence, the distance between anterior nasal spine and the most salient point of internal carotid artery carina was (62.18±5.12) mm, and the angle between anterior nasal spine and Abey’s plane was (36.8±3.4)°. The length between anterior nasal spine and orbital opening of canales opticus was (69.24±3.95) mm，and their angle was (41.4±3.0) ° The intracavernous portion of internal carotid artery could be divided to parasellar and paraclival sections. Among them, the parasellar part was closely related to the lateral wall of the pituitary, and its distance with the mesal was (9.06±1.34) mm. Conclusions Familiarity with the anatomy of the lateral wall of sphenoid sinus would be significant importance for intraoperative localization and safe treatment of cavernous sinus lesions.
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