Fetal Anatomy of the Optic Strut and Prechiasmatic Sulcus with a Clinical Perspective

Beğer, Orhan; Taghipour, Pourya; Çakır, Salim; Hamzaoğlu, Vural; Özalp, Hakan; Kara, Engin; Vayısoğlu, Yusuf; Dağtekin, Oykut; Dağtekin, Ahmet; Bağdatoğlu, Celal; Öztürk, Ahmet Hakan; Talaş, Derya Ümit

doi:10.1016/j.wneu.2020.01.125

Cited by 8 publications

(12 citation statements)

References 22 publications

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“…9,[13][14][15] Therefore, surgeons should know the anatomy of ACP and OS well in order to perform a successful intervention. 1,10,16,17 Kerr et al 18 studied on OS position related to the prechiasmatic sulcus and suggested that its location might affect surgical approach selection, patient positioning, and intraoperative surgical orientation. The available literature provides sufficient information on the location of OS relative to ACP and the prechiasmatic sulcus.…”

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confidence: 99%

Change in the Location of the Optic Strut Relative to the Anterior Clinoid Process Pneumatization

Adanır¹,

Ceylan

İnceoğlu³

et al. 2022

Journal of Craniofacial Surgery

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Objective: This study aimed to peruse the alteration of the position of the optic strut (OS) according to the anterior clinoid process (ACP) pneumatization. Methods: This retrospective study conducted on cone-beam computed tomography images of 400 patients with a mean age of 36.49±15.91 years. Results: Anterior clinoid process length, width, and angle were measured as 10.56±2.42 mm, 5.46±1.31 mm, and 42.56±14.68 degrees, respectively. The tip of ACP was measured as 6.60±1.50 mm away from the posterior rim of OS. In the 631 sides (78.87%) did not have ACP pneumatization. In the cases with ACP pneumatization, three different configurations were identified as follows: Type 1 in 71 sides (8.87%), Type 2 in 56 sides (7%), and Type 3 in 42 sides (5.23%). Relative to ACP, the location of OS was determined as follows: Type A in 29 sides (3.64%), Type B in 105 sides (13.12%), Type C in 344 sides (43%), Type D in 289 sides (36.12%), and Type E in 33 sides (4.12%). The spread of data related to the attachment site of OS according to the presence or absence of ACP pneumatization showed that the location of OS was affected by ACP pneumatization (P<0.001). In ACPs with pneumatization, the frequency of OS position relative to ACP was found as follows: Type A in none of sides (0%), Type B in 8 sides (7.6%), Type C in 53 sides (15.4%), Type D in 88 sides (30.4%), and Type E in 20 sides (60.6%). Conclusions: The main finding of this study was that the location of OS relative to ACP was affected by ACP pneumatization. In ACPs with pneumatization, OS was located more posteriorly compared with ACPs without pneumatization.

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confidence: 99%

Change in the Location of the Optic Strut Relative to the Anterior Clinoid Process Pneumatization

Adanır¹,

Ceylan

İnceoğlu³

et al. 2022

Journal of Craniofacial Surgery

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“…The little bridge that is the OS is often examined in aid of important information during differential diagnosis [3] and is considered of critical value as a landmark in many surgical interventions [1].…”

Section: Discussionmentioning

confidence: 99%

“…Given the nature of the parasellar pathologies, it is clear that the morphological aspect of this structure is of great interest to otolaryngologists, neurosurgeons, and ophthalmologists. Treatment usually implies surgical access within the area and the OS is often used as a reference for the course of action and planning of the procedure as well as an intraoperative surgical guide [1].…”

Section: Discussionmentioning

confidence: 99%

“…The OS is an important landmark when it comes to surgery within the sellar and parasellar regions [1]. ICA aneurysms can be classified as intradural and extradural, based on the morphological relationship between the insertion of the proximal dural ring and the inferior margin of the OS [2].…”

Section: Introductionmentioning

confidence: 99%

“…Signs such as OS erosion and enlargement of the SOF are "pathognomonic for an infraclinoid aneurysm"; deformation of the OS or concentric enlargement of the OC can be associated with optic tract tumors; and erosion of OS in association with other canal walls may suggest a nonvascular issue such as mucocele or tuberculosis of the sphenoid, orbital or nasopharyngeal malignancies or pituitary gland tumors [3]. Deformities of the OS have been encountered in carotid-cavernous fistulas, suprasellar cholestheatomas, and syndromes such as Down and Edwards [1].…”

Section: Introductionmentioning

confidence: 99%

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The Optic Strut—CBCT Pneumatization Pattern and Prevalence

2021

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(1) Background: The optic strut (OS) is a critical landmark for clinoid and paraclinoid surgical interventions. To our knowledge, the current literature only mentioned the OS as a possibility for a lesser sphenoidal wing (LSW) pneumatization path, without a proper study of the pneumatization patterns and prevalence within this structure. Thus, our aim was to fill in the missing information. (2) Methods: A retrospective study on 80 cone beam computed tomography (CBCT) files was conducted to assess the prevalence and the origins of pneumatization within the OS. (3) Results: The pneumatization patterns of the OS were: 56.25% from the sphenoid sinus, 1.25% from the posterior ethmoid air cells (PEAC), and 10% from Onodi cells (ONC). Simultaneous pneumatization of unique origin within the lesser sphenoidal wing (LSW) was found in 26.25% from the sphenoid sinus, 1.25% from PEAC, and 5% from ONC. Communication between both LSW roots through pneumatization was found in 6.25% of the files. (4) Conclusions: A careful radiological examination should precede clinical diagnosis and surgical interventions in the paraclinoid area to evaluate postoperative surgical risks and possible diffusion patterns for infection. Additionally, pneumatization within the OS alters its morphological features and thus, its utility as a landmark.

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Anatomic features of the cranial aperture of the optic canal in children: a radiologic study

et al. 2020

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Fetal Anatomy of the Optic Strut and Prechiasmatic Sulcus with a Clinical Perspective

Cited by 8 publications

References 22 publications

Change in the Location of the Optic Strut Relative to the Anterior Clinoid Process Pneumatization

Change in the Location of the Optic Strut Relative to the Anterior Clinoid Process Pneumatization

The Optic Strut—CBCT Pneumatization Pattern and Prevalence

Anatomic features of the cranial aperture of the optic canal in children: a radiologic study

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