A variant of the floor of the carotid canal

Sharma, Prachi; Lakhtakia, P. K.; Bisaria, KK

doi:10.1016/s0940-9602(11)80184-6

Cited by 5 publications

(3 citation statements)

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“…12 Previous studies have reported the absence of the inferior wall of the CC, which had an incidence of only 1 in 325 cases, while in other studies, 5 cases were found in 307 skulls. 13,14 The measurements of the CC are noted in previous studies, such as the one by Watanabe et al, and the transverse diameter in normal Japanese adults was of 5.27 AE 0.62 mm, whereas it was shorter (3.31 AE 0.44 mm) in patients with adult-onset moyamoya disease with ICA stenosis. 9 The comparison of our parameters with the parameters of other authors is shown in ►Tables 4, 5 and 6.…”

Section: Discussionmentioning

confidence: 83%

Morphometric Analysis of the External Aperture of the Carotid Canal in Skulls of South Indian Origin

et al. 2018

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Background and Objective The carotid canal (CC) is a bent passage in the petrous temporal bone from where the internal carotid artery (ICA) goes inside the skull. The shape, location and measurements of the CC are clinically very important in cases of skull base surgery, since the ICA has to be identified and isolated throughout its petrous course. Therefore, the present study was performed to measure and locate the CC from various important anatomical landmarks. Materials and Method The present study was conducted on 68 dry skulls of unknown gender. Various measurements and distances of the CC from various important landmarks were taken. The shape of the CC was also noted. Measurements were taken with the help of a screw-adjusted compass and of digital Vernier calipers. From the above measurements, mean and standard deviation (mean ± SD), median, range, and mode were calculated. Data analysis was done with IBM SPSS Statistics for Windows, Version 19.0 (IBM Corp, Armonk, NY, USA). Results The mean length of the CC on the right and left sides was 7.76 and 7.89 mm, respectively. The mean breadth of the CC on the right and left sides was 5.81 and 6.32 mm, respectively. The most common shape of the CC was round both on the right and left sides in 49.20% and in 53.12% of the cases. Conclusion The results of the present study will be useful in the performance of neurosurgical procedures, thereby preventing unpleasant complications.

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Section: Discussionmentioning

confidence: 83%

Morphometric Analysis of the External Aperture of the Carotid Canal in Skulls of South Indian Origin

et al. 2018

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“…Pastor Vazques et al studied 538 skulls for the abnormalities of the floor of the carotid canal and only in 2 skulls they found bilateral absence of carotid canal 6 . Similarly Sharma, PK et al found absence of the floor of the carotid canal in only one skull, out of 325 skulls studied 10 . Mohamed Abo Aoun et al reported that the inferior wall is seen defected in 5 skulls of all specimens (3.3%), while the superior wall is found defected only in one skull (0.66%) 5 .…”

Section: Introductionmentioning

confidence: 89%

“…Mohamed Abo Aoun et al reported that the inferior wall is seen defected in 5 skulls of all specimens (3.3%), while the superior wall is found defected only in one skull (0.66%) 5 . Studies on the variants of carotid canal reported that it may be unilateral 3 or bilateral 10 . Other studies suggested that absence of the floor and agenesis of the carotid canal is associated with agenesis of the carotid artery 1,8 .…”

Section: Introductionmentioning

confidence: 99%

A case of bilateral absence of carotid canals in human skull

Khan

Asari

Pasha

2016

Bangladesh J Med Sci

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Abstract:Anatomical variation in the lower limb was found during routine dissection in a 75-year-old male cadaver in the Morphology Laboratory at the University of Pamplona. While examining 25 skulls present in the department of Anatomy, Universiti Sains Malaysia, we found that in one of the skull the floor of the carotid canal was absent on both the sides. The absence of the floor, exposed the roof of the carotid canal which appeared as a deep groove extending on the under surface of the petrous temporal bone. Following review of literature, we found that absence of the carotid canal is a very rare anomaly and has a great clinical importance. Exposed internal carotid artery in the absence of floor can make it at risk of injury during skull base surgeries. Therefore, we decided to report this case.

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Segments of the Internal Carotid Artery: A New Classification

1996

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This study proposes an anatomically based nomenclature for the internal carotid artery (ICA) that can be applied by all disciplines. In 1938, Fischer published a seminal paper describing five segments of the ICA that were designated C1 through C5. These segments were based on the angiographic course of the intracranial ICA rather than its arterial branches or anatomic compartments. Subsequent attempts to apply modern nomenclature to these numerical segments failed to recognize Fischer's original intent of describing patterns of arterial displacement by tumors and, therefore, resulted in a nomenclature that was anatomically inaccurate. Fischer's system was further limited, because segments were numbered opposite the direction of blood flow and the extracranial ICA was excluded. The authors propose a new classification, which includes the entire ICA, uses a numerical scale in the direction of blood flow, and describes the segments of the ICA according to a detailed understanding of the anatomy surrounding the ICA and the compartments through which it travels. Twenty cadaveric specimens with intravascular injection of silicone rubber were used for microscopic dissection and 20 dry skulls were inspected. Histological sections in critical areas were examined. The authors' classification has the following seven segments: C1, cervical; C2, petrous; C3, lacerum; C4 cavernous; C5, clinoid; C6, ophthalmic; and C7, communicating. This classification is practical, accounts for new anatomic information and clinical interests, and clarifies all segments of the ICA.

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A variant of the floor of the carotid canal

Cited by 5 publications

References 0 publications

Morphometric Analysis of the External Aperture of the Carotid Canal in Skulls of South Indian Origin

Morphometric Analysis of the External Aperture of the Carotid Canal in Skulls of South Indian Origin

A case of bilateral absence of carotid canals in human skull

Segments of the Internal Carotid Artery: A New Classification

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