Ossification of the Posterior Petroclinoid Dural Fold

A Cadaveric Study with Neurosurgical Significance

David Kimball, Heather Kimball, Petru Matusz, R. Shane Tubbs, Marios Loukas, A. Aaron Cohen-Gadol

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Objectives The roof of the porus trigeminus, composed of the posterior petroclinoid dural fold, is an important landmark to the skull base surgeon. Ossification of the posterior petroclinoid dural fold is an anatomical variation rarely mentioned in the literature. Such ossification results in the trigeminal nerve traversing a bony foramen as it enters Meckel cave. The authors performed this study to better elucidate this anatomical variation. Design Fifteen adult cadaveric head halves were subjected to dissection of the middle cranial fossa. Microdissection techniques were used to examine the posterior petroclinoid dural folds. Skull base osteology was also studied in 71 dry human skulls with attention paid to the attachment point of the posterior petroclinoid dural folds at the trigeminal protuberances. Setting Cadaver laboratory Main Outcome Measures Measurements were made using a microcaliper. Digital images were made of the dissections. Results Completely ossified posterior petroclinoid folds were present in 20% of the specimens. Of the 142 dry skull sides examined, 9% had large trigeminal protuberances. Conclusions Based on this study, the posterior petroclinoid dural fold may completely ossify in adults that may lead to narrowing of the porus trigeminus and potential compression of the trigeminal nerve at the entrance to Meckel cave.

Original languageEnglish
Pages (from-to)272-277
Number of pages6
JournalJournal of Neurological Surgery Part B: Skull Base
Volume76
Issue number4
DOIs
Publication statusPublished - 2015

Fingerprint

Trigeminal Nerve
Skull Base
Osteogenesis
Skull
Dissection
Osteology
Middle Cranial Fossa
Microdissection
Cadaver
Head
Outcome Assessment (Health Care)
Surgeons

Keywords

  • cadaver dissection
  • microanatomy
  • neurosurgery
  • petroclinoid dural fold

Cite this

Kimball, David ; Kimball, Heather ; Matusz, Petru ; Tubbs, R. Shane ; Loukas, Marios ; Cohen-Gadol, A. Aaron. / Ossification of the Posterior Petroclinoid Dural Fold : A Cadaveric Study with Neurosurgical Significance. In: Journal of Neurological Surgery Part B: Skull Base. 2015 ; Vol. 76, No. 4. pp. 272-277.
@article{7c9bacbda8b649d0b0d83e9c84846a3a,
title = "Ossification of the Posterior Petroclinoid Dural Fold: A Cadaveric Study with Neurosurgical Significance",
abstract = "Objectives The roof of the porus trigeminus, composed of the posterior petroclinoid dural fold, is an important landmark to the skull base surgeon. Ossification of the posterior petroclinoid dural fold is an anatomical variation rarely mentioned in the literature. Such ossification results in the trigeminal nerve traversing a bony foramen as it enters Meckel cave. The authors performed this study to better elucidate this anatomical variation. Design Fifteen adult cadaveric head halves were subjected to dissection of the middle cranial fossa. Microdissection techniques were used to examine the posterior petroclinoid dural folds. Skull base osteology was also studied in 71 dry human skulls with attention paid to the attachment point of the posterior petroclinoid dural folds at the trigeminal protuberances. Setting Cadaver laboratory Main Outcome Measures Measurements were made using a microcaliper. Digital images were made of the dissections. Results Completely ossified posterior petroclinoid folds were present in 20{\%} of the specimens. Of the 142 dry skull sides examined, 9{\%} had large trigeminal protuberances. Conclusions Based on this study, the posterior petroclinoid dural fold may completely ossify in adults that may lead to narrowing of the porus trigeminus and potential compression of the trigeminal nerve at the entrance to Meckel cave.",
keywords = "cadaver dissection, microanatomy, neurosurgery, petroclinoid dural fold",
author = "David Kimball and Heather Kimball and Petru Matusz and Tubbs, {R. Shane} and Marios Loukas and Cohen-Gadol, {A. Aaron}",
year = "2015",
doi = "10.1055/s-0034-1396598",
language = "English",
volume = "76",
pages = "272--277",
journal = "Journal of Neurological Surgery Part B: Skull Base",
issn = "2193-6331",
publisher = "Thieme Medical Publishers",
number = "4",

}

Ossification of the Posterior Petroclinoid Dural Fold : A Cadaveric Study with Neurosurgical Significance. / Kimball, David; Kimball, Heather; Matusz, Petru; Tubbs, R. Shane; Loukas, Marios; Cohen-Gadol, A. Aaron.

In: Journal of Neurological Surgery Part B: Skull Base, Vol. 76, No. 4, 2015, p. 272-277.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Ossification of the Posterior Petroclinoid Dural Fold

T2 - A Cadaveric Study with Neurosurgical Significance

AU - Kimball, David

AU - Kimball, Heather

AU - Matusz, Petru

AU - Tubbs, R. Shane

AU - Loukas, Marios

AU - Cohen-Gadol, A. Aaron

PY - 2015

Y1 - 2015

N2 - Objectives The roof of the porus trigeminus, composed of the posterior petroclinoid dural fold, is an important landmark to the skull base surgeon. Ossification of the posterior petroclinoid dural fold is an anatomical variation rarely mentioned in the literature. Such ossification results in the trigeminal nerve traversing a bony foramen as it enters Meckel cave. The authors performed this study to better elucidate this anatomical variation. Design Fifteen adult cadaveric head halves were subjected to dissection of the middle cranial fossa. Microdissection techniques were used to examine the posterior petroclinoid dural folds. Skull base osteology was also studied in 71 dry human skulls with attention paid to the attachment point of the posterior petroclinoid dural folds at the trigeminal protuberances. Setting Cadaver laboratory Main Outcome Measures Measurements were made using a microcaliper. Digital images were made of the dissections. Results Completely ossified posterior petroclinoid folds were present in 20% of the specimens. Of the 142 dry skull sides examined, 9% had large trigeminal protuberances. Conclusions Based on this study, the posterior petroclinoid dural fold may completely ossify in adults that may lead to narrowing of the porus trigeminus and potential compression of the trigeminal nerve at the entrance to Meckel cave.

AB - Objectives The roof of the porus trigeminus, composed of the posterior petroclinoid dural fold, is an important landmark to the skull base surgeon. Ossification of the posterior petroclinoid dural fold is an anatomical variation rarely mentioned in the literature. Such ossification results in the trigeminal nerve traversing a bony foramen as it enters Meckel cave. The authors performed this study to better elucidate this anatomical variation. Design Fifteen adult cadaveric head halves were subjected to dissection of the middle cranial fossa. Microdissection techniques were used to examine the posterior petroclinoid dural folds. Skull base osteology was also studied in 71 dry human skulls with attention paid to the attachment point of the posterior petroclinoid dural folds at the trigeminal protuberances. Setting Cadaver laboratory Main Outcome Measures Measurements were made using a microcaliper. Digital images were made of the dissections. Results Completely ossified posterior petroclinoid folds were present in 20% of the specimens. Of the 142 dry skull sides examined, 9% had large trigeminal protuberances. Conclusions Based on this study, the posterior petroclinoid dural fold may completely ossify in adults that may lead to narrowing of the porus trigeminus and potential compression of the trigeminal nerve at the entrance to Meckel cave.

KW - cadaver dissection

KW - microanatomy

KW - neurosurgery

KW - petroclinoid dural fold

UR - http://www.scopus.com/inward/record.url?scp=84945944704&partnerID=8YFLogxK

U2 - 10.1055/s-0034-1396598

DO - 10.1055/s-0034-1396598

M3 - Article

VL - 76

SP - 272

EP - 277

JO - Journal of Neurological Surgery Part B: Skull Base

JF - Journal of Neurological Surgery Part B: Skull Base

SN - 2193-6331

IS - 4

ER -