title: Microsurgical anatomy for intraoperative preservation of the olfactory bulb and tract.
abstract: Damage to the olfactory bulb and tract is a frequently described complication of brain surgery in the frontal region, and it seems to be influenced by the surgical approaches. Eighty cerebral hemispheres and 5 formalin-fixed cadavers filled with colored latex were used. Parameters were directly measured, and after olfactory bulb and tract were mobilized with careful dissections, retraction of the frontal lobe was noted. The anterior border of the olfactory bulb is 22.21 (SD, 5.45) mm posterior to the frontomarginal sulcus, and arachnoidal dissection should be performed parallel to olfactory structures using sharp instruments to allow early visualization. Overall mobilization of the olfactory bulb and tract as 29.3 (SD, 6.4) mm in length is possible without disrupting the structures and enables a greater degree of the frontal-lobe elevation window up to 13.1 (SD, 3.2) mm. Using the morphometric data and anatomic knowledge may prevent unwanted anosmia complication during surgical approaches.
authors.affiliation: Department of Anatomy, Faculty of Medicine, Ankara University, Ankara, Turkey. comertayhan@yahoo.com
authors.forename: Ayhan
authors.initials: A
authors.lastname: Cömert
authors.forename: Hasan Cağlar
authors.initials: HC
authors.lastname: Uğur
authors.forename: Gökmen
authors.initials: G
authors.lastname: Kahiloğullar
authors.forename: Ela
authors.initials: E
authors.lastname: Cömert
authors.forename: Alaittin
authors.initials: A
authors.lastname: Elhan
authors.forename: Ibrahim
authors.initials: I
authors.lastname: Tekdemir
mesh_terms: D002102:Cadaver; D003399:Craniotomy / Q000009:adverse effects*; D004210:Dissection; D006801:Humans; D008866:Microsurgery; D000857:Olfaction Disorders / Q000209:etiology*; D009830:Olfactory Bulb / Q000033:anatomy & histology* / Q000293:injuries; D009832:Olfactory Nerve / Q000033:anatomy & histology*; D061219:Olfactory Nerve Injuries; D013194:Staining and Labeling