Computed tomography evaluation of the morphometry and variations of the infraorbital canal relating to endoscopic surgery

Autor: Kemal Emre Özen, Ibrahim Guler, Mustafa Büyükmumcu, Gülay Açar
Přispěvatelé: BÜYÜKMUMCU, MUSTAFA, Selçuk Üniversitesi, Tıp Fakültesi, Dahili Tıp Bilimleri Bölümü., Güler, İbrahim
Rok vydání: 2018
Předmět:
Adult
Male
0301 basic medicine
Maxillary sinus
Cirurgia endoscópica sinusal
Forame infraorbitário
Infraorbital canal
Iatrogenic Disease
Infraorbital foramen
Endoscopic surgery
Endoscopic sinus surgery
Computed tomography
Tomografia computadorizada multidetectores
Multidetector computed tomography
Young Adult
03 medical and health sciences
Infraorbital nerve
0302 clinical medicine
Paranasal Sinuses
Maxillary Nerve
medicine
otorhinolaryngologic diseases
Humans
030223 otorhinolaryngology
Retrospective Studies
Surgical approach
medicine.diagnostic_test
business.industry
Anatomic Variation
Endoscopy
Anatomy
Middle Aged
lcsh:Otorhinolaryngology
lcsh:RF1-547
Sagittal plane
Canal infraorbitário
medicine.anatomical_structure
Otorhinolaryngology
Infraorbital canal corpus types
Tipos de corpo do canal infraorbitário
Female
030101 anatomy & morphology
business
Orbit
Zdroj: Brazilian Journal of Otorhinolaryngology v.84 n.6 2018
Brazilian Journal of Otorhinolaryngology
Associação Brasileira de Otorrinolaringologia e Cirurgia Cérvico-Facial (ABORL-CCF)
instacron:ABORL-CCF
Brazilian Journal of Otorhinolaryngology, Vol 84, Iss 6, Pp 713-721 (2018)
Brazilian Journal of Otorhinolaryngology, Volume: 84, Issue: 6, Pages: 713-721, Published: DEC 2018
Popis: WOS: 000450006500008
PubMed: 28943288
Introduction: The course of the infraorbital canal may leave the infraorbital nerve susceptible to injury during reconstructive and endoscopic surgery, particularly when surgically manipulating the roof of the maxillary sinus. Objective: We investigated both the morphometry and variations of the infraorbital canal with the aim to show the relationship between them relative to endoscopic approaches. Methods: This retrospective study was performed on paranasal multidetector computed tomography images of 200 patients. Results The infraorbital canal corpus types were categorized as Type 1: within the maxillary bony roof (55.3%), Type 2: partially protruding into maxillary sinus (26.7%), Type 3: within the maxillary sinus (9.5%), Type 4: located anatomically at the outer limit of the zygomatic recess of the maxillary bone (8.5%). The internal angulation and the length of the infraorbital canal, the infraorbital foramen entry angles and the distances related to the infraorbital foramen localization were measured and their relationships with the infraorbital canal variations were analyzed. We reported that the internal angulations in both sagittal and axial sections were mostly found in infraorbital canal Type 1 and 4 (69.2%, 64.7%) but, there were commonly no angulation in Type 3 (68.4%) (p < 0.001). The length of the infraorbital canal and the distances from the infraorbital foramen to the infraorbital rim and piriform aperture was measured as the longest in Type 3 and the smallest in Type 1 (p < 0.001). The sagittal infraorbital foramen entry angles were detected significantly smaller in Type 3 and larger in Type 1 than that in other types (p = 0.003). The maxillary sinus septa and the Haller cell were observed in 28% and 16% of the images, respectively. Conclusion: Precise knowledge of the infraorbital canal corpus types and relationship with the morphometry allow surgeons to choose an appropriate surgical approach to avoid iatrogenic infraorbital nerve injury. (C) 2017 Associacao Brasileira de Otorrinolaringologia e Cirurgia Cervico-Facial. Published by Elsevier Editora Ltda.
Databáze: OpenAIRE
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