Ossification of ligaments near the foramen ovale

An anatomic study with potential clinical significance regarding transcutaneous approaches to the skull base

R. Shane Tubbs, William R. May, Nihal Apaydin, Mohammadali M. Shoja, Ghaffar Shokouhi, Marios Loukas, Aaron Cohen-Gadol

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

OBJECTIVE: There is paucity of information regarding the specific anatomy and clinical significance of ossified ligaments near the foramen ovale (e.g., pterygospinous and pterygoalar ligaments). The present study was undertaken to define this anatomy in more detail and to review the literature regarding these anatomic variations. METHODS: One hundred fifty-four adult human dry skulls were analyzed for the presence of ossified ligaments of pterygospinous (ligament of Civinini) and pterygoalar (ligament of Hyrtl). Measurements were made of these bony structures and observations made of their relationships to the inferior aspect of the foramen ovale and neighboring structures. RESULTS: Two ossifications each (2.6%) of the ligaments of Civinini and Hyrtl were found. One of each of these (1.3%) was completely ossified, thereby resulting in 2 complete foramina (i.e., 1 foramen of Civinini and 1 foramen of Hyrtl). A significant correlation was found between the left and right sides, with either complete or incomplete ossification of these ligaments being found on left sides (75%) (incomplete Civinini on right side and all others on left side). The complete foramen of Civinini was found to have an area of 16.7 mm, and the complete foramen of Hyrtl was found to have an area of 9.42 mm. CONCLUSION: Such anomalous bony obstructions could interfere with transcutaneous needle placement into the foramen ovale or distort anatomic relationships during approaches to the cranial base.

Original languageEnglish
JournalNeurosurgery
Volume65
Issue number6 SUPPL. 1
DOIs
StatePublished - Dec 2009

Fingerprint

Foramen Ovale
Skull Base
Ligaments
Osteogenesis
Anatomy
Anatomic Variation
Skull
Needles

Keywords

  • Anatomy
  • Cranial base
  • Gasserian ganglion
  • Neurosurgery
  • Skull base

ASJC Scopus subject areas

  • Clinical Neurology
  • Surgery

Cite this

Ossification of ligaments near the foramen ovale : An anatomic study with potential clinical significance regarding transcutaneous approaches to the skull base. / Tubbs, R. Shane; May, William R.; Apaydin, Nihal; Shoja, Mohammadali M.; Shokouhi, Ghaffar; Loukas, Marios; Cohen-Gadol, Aaron.

In: Neurosurgery, Vol. 65, No. 6 SUPPL. 1, 12.2009.

Research output: Contribution to journalArticle

Tubbs, R. Shane ; May, William R. ; Apaydin, Nihal ; Shoja, Mohammadali M. ; Shokouhi, Ghaffar ; Loukas, Marios ; Cohen-Gadol, Aaron. / Ossification of ligaments near the foramen ovale : An anatomic study with potential clinical significance regarding transcutaneous approaches to the skull base. In: Neurosurgery. 2009 ; Vol. 65, No. 6 SUPPL. 1.
@article{88578c9ac95d478d95c18e1aedfc2e52,
title = "Ossification of ligaments near the foramen ovale: An anatomic study with potential clinical significance regarding transcutaneous approaches to the skull base",
abstract = "OBJECTIVE: There is paucity of information regarding the specific anatomy and clinical significance of ossified ligaments near the foramen ovale (e.g., pterygospinous and pterygoalar ligaments). The present study was undertaken to define this anatomy in more detail and to review the literature regarding these anatomic variations. METHODS: One hundred fifty-four adult human dry skulls were analyzed for the presence of ossified ligaments of pterygospinous (ligament of Civinini) and pterygoalar (ligament of Hyrtl). Measurements were made of these bony structures and observations made of their relationships to the inferior aspect of the foramen ovale and neighboring structures. RESULTS: Two ossifications each (2.6{\%}) of the ligaments of Civinini and Hyrtl were found. One of each of these (1.3{\%}) was completely ossified, thereby resulting in 2 complete foramina (i.e., 1 foramen of Civinini and 1 foramen of Hyrtl). A significant correlation was found between the left and right sides, with either complete or incomplete ossification of these ligaments being found on left sides (75{\%}) (incomplete Civinini on right side and all others on left side). The complete foramen of Civinini was found to have an area of 16.7 mm, and the complete foramen of Hyrtl was found to have an area of 9.42 mm. CONCLUSION: Such anomalous bony obstructions could interfere with transcutaneous needle placement into the foramen ovale or distort anatomic relationships during approaches to the cranial base.",
keywords = "Anatomy, Cranial base, Gasserian ganglion, Neurosurgery, Skull base",
author = "Tubbs, {R. Shane} and May, {William R.} and Nihal Apaydin and Shoja, {Mohammadali M.} and Ghaffar Shokouhi and Marios Loukas and Aaron Cohen-Gadol",
year = "2009",
month = "12",
doi = "10.1227/01.NEU.0000345952.64041.9C",
language = "English",
volume = "65",
journal = "Neurosurgery",
issn = "0148-396X",
publisher = "Lippincott Williams and Wilkins",
number = "6 SUPPL. 1",

}

TY - JOUR

T1 - Ossification of ligaments near the foramen ovale

T2 - An anatomic study with potential clinical significance regarding transcutaneous approaches to the skull base

AU - Tubbs, R. Shane

AU - May, William R.

AU - Apaydin, Nihal

AU - Shoja, Mohammadali M.

AU - Shokouhi, Ghaffar

AU - Loukas, Marios

AU - Cohen-Gadol, Aaron

PY - 2009/12

Y1 - 2009/12

N2 - OBJECTIVE: There is paucity of information regarding the specific anatomy and clinical significance of ossified ligaments near the foramen ovale (e.g., pterygospinous and pterygoalar ligaments). The present study was undertaken to define this anatomy in more detail and to review the literature regarding these anatomic variations. METHODS: One hundred fifty-four adult human dry skulls were analyzed for the presence of ossified ligaments of pterygospinous (ligament of Civinini) and pterygoalar (ligament of Hyrtl). Measurements were made of these bony structures and observations made of their relationships to the inferior aspect of the foramen ovale and neighboring structures. RESULTS: Two ossifications each (2.6%) of the ligaments of Civinini and Hyrtl were found. One of each of these (1.3%) was completely ossified, thereby resulting in 2 complete foramina (i.e., 1 foramen of Civinini and 1 foramen of Hyrtl). A significant correlation was found between the left and right sides, with either complete or incomplete ossification of these ligaments being found on left sides (75%) (incomplete Civinini on right side and all others on left side). The complete foramen of Civinini was found to have an area of 16.7 mm, and the complete foramen of Hyrtl was found to have an area of 9.42 mm. CONCLUSION: Such anomalous bony obstructions could interfere with transcutaneous needle placement into the foramen ovale or distort anatomic relationships during approaches to the cranial base.

AB - OBJECTIVE: There is paucity of information regarding the specific anatomy and clinical significance of ossified ligaments near the foramen ovale (e.g., pterygospinous and pterygoalar ligaments). The present study was undertaken to define this anatomy in more detail and to review the literature regarding these anatomic variations. METHODS: One hundred fifty-four adult human dry skulls were analyzed for the presence of ossified ligaments of pterygospinous (ligament of Civinini) and pterygoalar (ligament of Hyrtl). Measurements were made of these bony structures and observations made of their relationships to the inferior aspect of the foramen ovale and neighboring structures. RESULTS: Two ossifications each (2.6%) of the ligaments of Civinini and Hyrtl were found. One of each of these (1.3%) was completely ossified, thereby resulting in 2 complete foramina (i.e., 1 foramen of Civinini and 1 foramen of Hyrtl). A significant correlation was found between the left and right sides, with either complete or incomplete ossification of these ligaments being found on left sides (75%) (incomplete Civinini on right side and all others on left side). The complete foramen of Civinini was found to have an area of 16.7 mm, and the complete foramen of Hyrtl was found to have an area of 9.42 mm. CONCLUSION: Such anomalous bony obstructions could interfere with transcutaneous needle placement into the foramen ovale or distort anatomic relationships during approaches to the cranial base.

KW - Anatomy

KW - Cranial base

KW - Gasserian ganglion

KW - Neurosurgery

KW - Skull base

UR - http://www.scopus.com/inward/record.url?scp=74549113648&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=74549113648&partnerID=8YFLogxK

U2 - 10.1227/01.NEU.0000345952.64041.9C

DO - 10.1227/01.NEU.0000345952.64041.9C

M3 - Article

VL - 65

JO - Neurosurgery

JF - Neurosurgery

SN - 0148-396X

IS - 6 SUPPL. 1

ER -