Morphology of the anterior clinoid process in a select Kenyan population

Abstract

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

Metric Analysis of Sella Turcica for Sex Identification Using Multidetector Computed Tomography in a Sample of Adult Egyptians.

“…In partial agreement; in Indian population; Souza et al (2016) reported that ACPBW showed statistically significant side difference; although sex difference was not assessed. Unlike our results; Sibuor, et al (2018) in Kenyan population; reported that no statistically significant side differences in the anterior clinoid process dimensions.…”

Morphometric measurements of anterior clinoid process in relation to parasellar osseous structures and their clinical significance

“…Our study concurred with the study by Natsis K et al 21 but their values for the ACP-PCP distance are higher than our values and distance between ACP tips and distance between PCP tips are much lower than our values. Our study also concurred the studies by Lone M et al 7 and Dagtekin A et al 10 but their values for all the parameters in parasellar region are lower than our values (table 4) 3 Natsis K et al 5 Lone M et al 18 Dagtekin A et al A study by Neslihan B et al 22 found that distance between ACP tips was 25.8±2.7mm and the distance between ACP-PCP was 10.7±2mm in right and 10.4±2.1mm in left side and these values are higher than our values. Most of the previous studies are from outside India and few are from southern and eastern part of India but our study was conducted on the population of North India.…”

“…Our study also concurred with the study by Dagtekin A et al 19 in the population of Turkey, but their parameters for the length and width was much lower as compared to our values and the thickness was much higher as compared to ours. Similar study was also done by Neslihan B et al 22 but their values for length, width and thickness for all the parameters are much higher than our values. Our values of all the parameters are different from their values may be because of the different population and different age groups (table 3).…”

Assessment of the Anterior Clinoid Process and Optic Strut in Chiari Malformation Type I: A Computed Tomography Study

“…OS-W was measured as 3.08 AE 0.78 mm for CM-I and 2.97 AE 0.72 for the control group (p ¼ 0.376). Our ACP-W and OS-W values for both groups were compatible with previous studies (►Table 7), 10,12,18,19,21,22,[39][40][41][42][43][44][45][46][47][48][49] in where the mean data range was given as 5.46 to 12.40 mm for ACP-W and as 2.40 to 3.88 mm for OS-W. Our data displayed that these two parameters were not affected by CM-I. However, ACP-L was smaller in CM-I (11.12 AE 2.09 mm) than the control group (12.79 AE 2.43 mm; p < 0.001).…”

“…However, ACP-L was smaller in CM-I (11.12 AE 2.09 mm) than the control group (12.79 AE 2.43 mm; p < 0.001). Our average values for both groups were compatible with previous studies (►Table 7), 10,12,18,19,21,22,[39][40][41][42][44][45][46][47][48][49][50] in where the mean data range was presented between 5.30 and 12.50 mm. In contrast to ACP-L value, ACP-A, OS-L, and Dis-ACP-OS were found greater in CM-I than the control group.…”