Caroticoclinoid foramen with interclinoid osseous bar

2006 ◽  
Vol 19 (8) ◽  
pp. 732-733 ◽  
Author(s):  
Biswabina Ray ◽  
Nirupma Gupta
Keyword(s):  
Caroticoclinoid Foramen

scholarly journals Surgically Relevant Bony Anatomical Variations in Paraclinoid Aneurysms-Three-Dimensional Multi-Detector Row Computed Tomography-Based Study

2017 ◽  
Vol 08 (03) ◽  
pp. 330-334 ◽  
Author(s):  
K. Suprasanna ◽  
Ashvini Kumar
Keyword(s):  
Computed Tomography ◽  
Cerebral Angiography ◽  
Three Dimensional ◽  
Anatomical Variations ◽  
Type I ◽  
Anterior Clinoid Process ◽  
Multiplanar Reconstructions ◽  
Paraclinoid Aneurysm ◽  
Paraclinoid Aneurysms ◽  
Caroticoclinoid Foramen

ABSTRACT Objective: To evaluate the proportion of surgically relevant anatomical variations such as caroticoclinoid foramen, interclinoid osseous bridge, and anterior clinoid pneumatization in patients with paraclinoid aneurysms based on computed tomography (CT) cerebral angiography studies. Materials and Methods: Fifty-four CT cerebral angiography studies showing paraclinoid aneurysms involving the cavernous, clinoid, and supraclinoid internal carotid artery (ICA) were retrospectively evaluated. Source images were processed for three-dimensional reconstructions to evaluate the presence and type of caroticoclinoid foramen, interclinoid osseous bridge, and multiplanar reconstructions with bone algorithm to study the type of pneumatization. Results: The study included 30 female and 24 male patients with mean age of 45.61 (10.47) years. Among the 108 sides studied in 54 patients, caroticoclinoid foramen was seen in 24 cases (22.22%), interclinoid osseous bridge was seen unilaterally in 1 case (0.9%), and pneumatization of anterior clinoid process occurred in 12 cases (11.11%). Incomplete caroticoclinoid foramen (11 cases) and Type I pneumatization (7 cases) were seen to be predominant subtypes. There was no statistically significant gender difference in the occurrence of caroticoclinoid foramen and anterior clinoid pneumatization. Seventy-four aneurysms were detected in 54 patients. Based on their location, 46 aneurysms involved supraclinoid ICA, 18 aneurysms in the clinoid segment, and 10 aneurysms in the cavernous segment. Caroticoclinoid foramen was most prevalent in clinoid aneurysms with 12 cases occurring in the clinoid segment. Conclusion: Notable proportions of caroticoclinoid foramen and pneumatization occur in cases of paraclinoid aneurysm. Radiological reports should emphasize on these surgically relevant bony anatomical variations.

scholarly journals Morphology of the anterior clinoid process in a select Kenyan population

2018 ◽  
Vol 7 (1) ◽  
pp. 1132-1137
Author(s):  
William Sibuor ◽  
Isaac Cheruiyot ◽  
Jeremiah Munguti ◽  
James Kigera ◽  
Gichambira Gikenye
Keyword(s):  
Skull Base ◽  
Human Anatomy ◽  
Average Thickness ◽  
Anterior Clinoid Process ◽  
Morphological Variations ◽  
Anterior Clinoidectomy ◽  
Mean Width ◽  
The Mean ◽  
Caroticoclinoid Foramen ◽  
Neurovascular Structures

Knowledge of the morphological variations of the anterior clinoid process is pertinent during anterior clinoidectomy to prevent injury to the adjacent neurovascular structures as well as in the interpretation of skull base radiographs. Fifty-one open crania (102 anterior clinoid processes) were obtained from the Departments of Human Anatomy in three Kenyan Universities. Caroticoclinoid foramen was present in nine (17.6%) out of the 51 skulls studied. Of the 9 skulls, 2 had bilateral complete foramina while the remaining 7 had unilateral foramina, all on the left side. The mean length of the anterior clinoid process ranged between 5.0 and 18.8mm with a mean of 10.92±2.79 mm. The mean width was found to be 10.43±2.67 mm (range: 5.3-18.0mm) while the average thickness was 5.43±2.02mm (range: 1.3-11.9mm). There were no statistically significant side differences in the dimensions of the anterior clinoid process. Type IIIb anterior clinoid process was the commonest (47.1%) while type IIIa was the least common (7.8%). Compared to other populations, the anterior clinoid process in our setting shows some differences involving its type and the caroticoclinoid foramen. These features should be taken into account when interpreting skull base radiographs and planning for anterior clinoidectomies.Keywords: Clinoid Process, Kenya, Morphology

scholarly journals Ossification of caroticoclinoid ligament and its clinical importance in skull-based surgery

2007 ◽  
Vol 125 (6) ◽  
pp. 351-353 ◽  
Author(s):  
Srijit Das ◽  
Rajesh Suri ◽  
Vijay Kapur
Keyword(s):  
Carotid Artery ◽  
Internal Carotid Artery ◽  
Internal Carotid ◽  
Clinical Importance ◽  
Skull Bone ◽  
Posterior Border ◽  
Morphometric Measurements ◽  
Anterior Clinoid Process ◽  
Radiological Study ◽  
Caroticoclinoid Foramen

CONTEXT: The medial end of the posterior border of the sphenoid bone presents the anterior clinoid process (ACP), which is usually accessed for operations involving the clinoid space and the cavernous sinus. The ACP is often connected to the middle clinoid process (MCP) by a ligament known as the caroticoclinoid ligament (CCL), which may be ossified, forming the caroticoclinoid foramen (CCF). Variations in the ACP other than ossification are rare. The ossified CCL may have compressive effects on the internal carotid artery. Thus, anatomical and radiological knowledge of the ACP and the clinoid space is also important when operating on the internal carotid artery. Excision of the ACP may be required for many skull-based surgical procedures, and the presence of any anomalies such as ossified CCL may pose a problem for neurosurgeons. CASE REPORT: We observed the presence of ossified CCL in a skull bone. A detailed radiological study of the CCL and the CCF was conducted. Morphometric measurements were recorded and photographs were taken. The ACP was connected to the MCP and was converted into a CCF. Considering the fact that standard anatomy textbooks do not provide morphological descriptions and radiological evaluations of the CCL, the present study may be important for neurosurgeons operating in the region of the ACP.

scholarly journals The caroticoclinoid foramen in fetal and infantile orbitosphenoid, presphenoid, and sphenoid bones: developmental and neurosurgical considerations

2019 ◽  
Vol 23 (3) ◽  
pp. 390-396 ◽  
Author(s):  
Matthew J. Zdilla
Keyword(s):  
Carotid Artery ◽  
Early Life ◽  
Internal Carotid ◽  
Clinical Importance ◽  
Common Finding ◽  
Anterior Clinoid Process ◽  
Black And White ◽  
Risk Of Injury ◽  
Caroticoclinoid Foramen ◽  
Neurovascular Structures

OBJECTIVEThe presence of a caroticoclinoid foramen may increase the likelihood of adverse neurosurgical events. Despite the clinical importance of the caroticoclinoid foramen, its study has been mostly limited to adult populations. Therefore, the object of this study was to describe the prevalence, morphology, and development of the caroticoclinoid foramen among varied sexes and races in early life.METHODSThe study analyzed caroticoclinoid foramina in dry orbitosphenoid, presphenoid, and sphenoid bones from a population of 101 fetal and infantile crania of varied sex and race.RESULTSA caroticoclinoid foramen, whether complete, near complete, or partial, was found in 36 of 199 sides (18.1%). Of the 98 crania with bilaterally intact sides, 21 (21.4%) had the presence of at least one caroticoclinoid foramen. Caroticoclinoid foramina were found unilaterally and bilaterally, in both female and male crania (9/41, 22.0%; 12/57, 21.1%, respectively) and, likewise, in crania of both black and white races (9/54, 16.7%; 12/44, 27.3%, respectively). Caroticoclinoid foramina were formed from cornuate bony projections from the anterior clinoid process, middle clinoid process, or both anterior and middle clinoid processes. Caroticoclinoid foramina were also found in isolated orbitosphenoid bones from individuals as young as 4 months’ fetal age.CONCLUSIONSThe caroticoclinoid foramen occurs in approximately one of every 5 sides and in one in every 5 individuals of perinatal age and should, therefore, be considered a common finding in both fetuses and infants. It is common in both females and males as well as in both black and white races, alike. Furthermore, the caroticoclinoid foramen can be found in individuals as young as 4 months of fetal age. Failure to anticipate the presence of a caroticoclinoid foramen will place important neurovascular structures, including the internal carotid artery, at risk of injury. Neurosurgeons should, therefore, anticipate the caroticoclinoid foramen even in their youngest patients.

Surgical Importance of the Morphometry of the Anterior Clinoid Process, Optic Strut, Caroticoclinoid Foramen, and Interclinoid Osseous Bridge

2011 ◽  
Vol 21 (2) ◽  
pp. 133-136 ◽  
Author(s):  
Neslihan Boyan ◽  
Esin Ozsahin ◽  
Emine Kizilkanat ◽  
Ibrahim Tekdemir ◽  
Roger Soames ◽  
...  
Keyword(s):  
Anterior Clinoid Process ◽  
Optic Strut ◽  
Caroticoclinoid Foramen

scholarly journals Caroticoclinoid Foramen in Human Skulls: Incidence, Morphometry and its Clinical Implications

2011 ◽  
Vol 29 (2) ◽  
pp. 427-431 ◽  
Author(s):  
Alexandre Rodrigues Freire ◽  
Ana Cláudia Rossi ◽  
Felippe Bevilacqua Prado ◽  
Francisco Carlos Groppo ◽  
Paulo Henrique Ferreira Caria ◽  
...  
Keyword(s):  
Clinical Implications ◽  
Human Skulls ◽  
Caroticoclinoid Foramen

scholarly journals Morphological Variation of Anterior Clinoid Process in Dry Human Skulls

2020 ◽  
Vol 4 (3) ◽  
pp. 813-817
Author(s):  
Arun Dhakal ◽  
Umesh Kumar Mehta ◽  
Sanjib Kumar Sah ◽  
Raju Kumar Chaudhary Kumar Chaudhary
Keyword(s):  
Anterior Clinoid Process ◽  
Anatomical Relationship ◽  
Posterior Clinoid Process ◽  
The Mean ◽  
Human Skulls ◽  
The Right ◽  
Caroticoclinoid Foramen ◽  
Base Of The Skull ◽  
Relationship Of ◽  
Paired T Test

Introduction: The anatomical relationship of the Anterior Clinoid Process (ACP) with its neighboring structures in the base of the skull is complex with different variations. Thus, study of its morphology is essential in defining and directing surgery. Objective: This study aims to investigate the anatomy of the anterior clinoid process and prevalence of Caroticoclinoid foramen (CCF) to highlight its variations. Methodology: The measurements were performed in 31 dry human skulls to define the structure of ACP, the presence of CCF and other relevant landmarks using digital Vernier Calipers. Results: The mean length, basal width and thickness of the right ACP was 9.88+/- 1.36 mm, 8.72+/-1.50 mm, and 5.21+/-1.83 mm respectively and that of the left was 10.30+/-1.47, 8.73+/-1.71, and 5.33+/-1.60 mm respectively.  Paired t-test was used to compare the mean of these sides. Type III was the most common form of ACP for both the sides. Out of 31 skulls, CCF was observed in 12 (38.7%) skulls with 7 (22.6%) in right and 5 (16.13%) in left side. Distances between neighboring ACP’s, between Posterior Clinoid process (PCP), between ACP to Crista Galli (CG) and ACP to PCP were 24.41+/-2.32, 20.01+/-3.23, 31.6+/-2.20, and 8.30+/-3.10 mm respectively. Conclusion: This article highlights the detailed morphology of ACP. There is variation in relation to its dimensions across other studies. This study also explores the prevalence of CCF and parasellar landmarks in relation to ACP giving an idea of the exposure achievable during surgical approach of the region.

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