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| Nasal Endoscopic Approach and Applied Anatomy of the Paraspinal Midline Skull Base |
| ZHUO Mu-gai, LU Yong-tian |
| Department of Eye, Otolaryngology, the Third People's Hospital, Longgang District, Guangzhou Medical University, Shenzhen Guangdong,518115 |
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Abstract Objective To study the approach and applied anatomy of the paranasal endoscopic cranioscopial endoscopic surgery. Methods Sixty adult nasal and skull base CT scans were reconstructed by interactive medical image control software. The related skull base structures could be measured on the three-dimensional reconstructed model. 20 wet skull specimens were dissected on the midline skull base under nasal endoscopy. Combined with nasal-maxillary sinus approach, the important anatomical structures of the paramedian skull base, such as the infratemporal fossa, pterygopalatine fossa and the important nerve vessels, muscles and bony anatomical landmarks of the nasopharynx, were studied. Results The distances from the inner margin of jugular foramen, the posterior end of pterygoid canal, the inner margin of external carotid canal and the inner margin of ruptured foramen to the median line were (28.67±1.50) mm, (13.2±1.37) mm, (28.99±1.73) mm, (11.59±0.96) mm, respectively; the distances from the superior anterior nasal spine to the ruptured foramen were (72.68±2.43) mm); the distance from the midpoint of the posterior margin of vomerula to the rupture hole was (13.71±1.14) mm. Conclusion Anatomy research on the pterygopalatine fossa, infratemporal fossa, nasopharyngeal eustachian tube area and other paramedian skull base under nasal endoscopy combined with nasal cavity-maxillary sinus approach has a broader visual space and surgical space, is a better surgical method worthy of promotion in clinical treatment.
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Received: 24 May 2018
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2019, Vol. 36 
