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Endoscopic transnasal study of the infratemporal fossa: A new orientation
Faculty
Medicine
Year:
2009
Type of Publication:
Article
Pages:
861-865
Authors:
Herzallah, Islam R, Casiano, Roy R, Germani, Ross
DOI:
10.1016/j.otohns.2009.02.020
Journal:
OTOLARYNGOLOGY-HEAD AND NECK SURGERY MOSBY-ELSEVIER
Volume:
140
Research Area:
Otorhinolaryngology; Surgery
ISSN
ISI:000266617400015
Keywords :
Endoscopic transnasal study , , infratemporal fossa: , , orientation
Abstract:
INTRODUCTION: The medial portion of the infratemporal fossa (ITF) is not infrequently involved in sinonasal and skull base pathologies. However, endoscopic view of the ITF remains unclear with lack Of Studies addressing this region from the endoscopic perspective. METHODS: Using in extended endoscopic approach, the pterygopalatine and infratemporal fossae were dissected in 10 sides of five adult cadaver heads. A plane of dissection along the pterygoid base and the infratemporal surface of the greater sphenoid wing was developed. High-quality images were produced by coupling the video camera to a digital recording system. RESULTS: The foramen rotundum, ovale, and spinosum were accessed and new landmarks were described from the endoscopic point of view. The sphenomandibularis muscle was also highlighted. Maxillary and mandibular nerves and middle meningeal artery were all identified. Columellar measurements to the foramen rotundum and ovale ranged from 6.1 to 8.0 cm for the former and 7.0 to 9.1 cm for the latter, with a mean of 6.75 cm and 7.78 cm respectively. CONCLUSION: The current study provides a novel endoscopic orientation to the medial ITF. Such knowledge should provide an anatomical basis for experienced surgeons to endoscopically address this region with more safety and efficacy. (C) 2009 American Academy of Otolaryngology-Head and Neck Surgery Foundation. All rights reserved.
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