open access

Vol 83, No 1 (2024): Folia Morphologica
Original article
Submitted: 2022-10-20
Accepted: 2022-12-21
Published online: 2023-01-17
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Occurrence of the ossification of petrosphenoid ligament: a retrospective radiologic study from computed tomographic images

Bhagath Kumar Potu1, Fatemah Hamad Al-Khamis2, Hebah Husain Taher2, Abdulrahman Abdulreheim3
·
Pubmed: 36688405
·
Folia Morphol 2024;83(1):176-181.
Affiliations
  1. Department of Anatomy, College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain
  2. College of Medicine and Medical Sciences, Arabian Gulf University, Manama, Kingdom of Bahrain
  3. Medical Imaging Department, Mubarak Al-Kabeer Hospital, Jabriya, Kuwait

open access

Vol 83, No 1 (2024): Folia Morphologica
ORIGINAL ARTICLES
Submitted: 2022-10-20
Accepted: 2022-12-21
Published online: 2023-01-17

Abstract

Background: Various ligaments present in the skull base are of clinical and surgical importance. One among them, is the petrosphenoid ligament (PSL). PSL may ossify either in a partial or complete form and forms the roof of Dorello’s canal underneath which the abducens nerve passes. Studies argued both protective and adverse effects of the ossified PSL. Hence, the incidence of PSL ossification has become a relevant subject in clinical practice to radiologists, neurologists and neurosurgeons for understanding its potential role in abducens nerve compression.

Materials and methods: We have undertaken this study to investigate the incidence of PSL ossification from multidetector computed tomography (MDCT) images of the patients who had been referred to the Medical Imaging Department of Mubarak Al-Kabeer Hospital in Kuwait. We retrospectively assessed a total of 200 patients’ head CT scans (400 petroclival regions) between January 2021 and June 2022 in which 59% were males (n = 118) and 41% were females (n = 82) aged between 18 and 91 years.

Results: A total of 37 patients (26 male, 11 female) aged between 18–84 years were presented with ossification of PSL. Among these 37 patients, 28 patients were presented with unilateral ossified PSL, and 9 patients were presented with bilateral ossified PSL, amounting to the total of 46 ossified PSL from 400 CT images of the petroclival regions (11.5%). The genderwise and sidewise occurrence of the PSL ossification seen in different age groups were not statistically significant (p > 0.05). Among all the ossified cases, there was no patient presented with abducens nerve palsy.

Conclusions: We believe our results provide baseline data in the region for understanding PSL ossification and its impact on the abducens nerve palsy.

Abstract

Background: Various ligaments present in the skull base are of clinical and surgical importance. One among them, is the petrosphenoid ligament (PSL). PSL may ossify either in a partial or complete form and forms the roof of Dorello’s canal underneath which the abducens nerve passes. Studies argued both protective and adverse effects of the ossified PSL. Hence, the incidence of PSL ossification has become a relevant subject in clinical practice to radiologists, neurologists and neurosurgeons for understanding its potential role in abducens nerve compression.

Materials and methods: We have undertaken this study to investigate the incidence of PSL ossification from multidetector computed tomography (MDCT) images of the patients who had been referred to the Medical Imaging Department of Mubarak Al-Kabeer Hospital in Kuwait. We retrospectively assessed a total of 200 patients’ head CT scans (400 petroclival regions) between January 2021 and June 2022 in which 59% were males (n = 118) and 41% were females (n = 82) aged between 18 and 91 years.

Results: A total of 37 patients (26 male, 11 female) aged between 18–84 years were presented with ossification of PSL. Among these 37 patients, 28 patients were presented with unilateral ossified PSL, and 9 patients were presented with bilateral ossified PSL, amounting to the total of 46 ossified PSL from 400 CT images of the petroclival regions (11.5%). The genderwise and sidewise occurrence of the PSL ossification seen in different age groups were not statistically significant (p > 0.05). Among all the ossified cases, there was no patient presented with abducens nerve palsy.

Conclusions: We believe our results provide baseline data in the region for understanding PSL ossification and its impact on the abducens nerve palsy.

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Keywords

petrosphenoid ligament, ossification, multidetector computed tomography, abducens nerve palsy

About this article
Title

Occurrence of the ossification of petrosphenoid ligament: a retrospective radiologic study from computed tomographic images

Journal

Folia Morphologica

Issue

Vol 83, No 1 (2024): Folia Morphologica

Article type

Original article

Pages

176-181

Published online

2023-01-17

Page views

414

Article views/downloads

615

DOI

10.5603/FM.a2023.0004

Pubmed

36688405

Bibliographic record

Folia Morphol 2024;83(1):176-181.

Keywords

petrosphenoid ligament
ossification
multidetector computed tomography
abducens nerve palsy

Authors

Bhagath Kumar Potu
Fatemah Hamad Al-Khamis
Hebah Husain Taher
Abdulrahman Abdulreheim

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