The clival line as an important anatomical landmark during endoscopic third ventriculostomy of the floor of the third ventricle

Alzahrani A.A.

Sechenov First Moscow State Medical University (Sechenov University)

ORCID: 0000-0001-7913-5394

Dydykin S.S.

Sechenov First Moscow State Medical University (Sechenov University)

ORCID: 0000-0002-1273-0356

Sufianov A.A.

Sechenov First Moscow State Medical University (Sechenov University);
Patrice Lumumba Russian Peoples’ Friendship University

SPIN RSCI: 1722-0448
Scopus AuthorID: 6603558501
ORCID: 0000-0001-7580-0385

Iakimov Yu.A.

Sechenov First Moscow State Medical University (Sechenov University);
Federal Center for Neurosurgery

ORCID: 0000-0001-6675-2051

Rustamov R.R.

Federal Center for Neurosurgery

ORCID: 0000-0003-3619-820X

Sufianov R.A.

Sechenov First Moscow State Medical University (Sechenov University)

ORCID: 0000-0003-4031-0540

The clival line as an important anatomical landmark during endoscopic third ventriculostomy of the floor of the third ventricle

Authors:

Alzahrani A.A., Dydykin S.S., Sufianov A.A., Iakimov Yu.A., Rustamov R.R., Sufianov R.A.

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Journal: Russian Journal of Operative Surgery and Clinical Anatomy. 2023;7(4): 5‑14

DOI: 10.17116/operhirurg202370415

Downloaded: 34

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To cite this article:

Alzahrani AA, Dydykin SS, Sufianov AA, Iakimov YuA, Rustamov RR, Sufianov RA. The clival line as an important anatomical landmark during endoscopic third ventriculostomy of the floor of the third ventricle. Russian Journal of Operative Surgery and Clinical Anatomy. 2023;7(4):5‑14. (In Russ.)
https://doi.org/10.17116/operhirurg202370415

Подписка 2025 (Russian Journal of Operative Surgery and Clinical Anatomy)

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BACKGROUND

The arachnoid membranes are widely and unevenly distributed in the cranial cavity and vary greatly in appearance and configuration. Understanding the distribution and configuration of intracranial arachnoid membranes is useful in order to make full use of natural anatomical landmarks during operations.

OBJECTIVE

The purpose of the study is to study the features of the endoscopic anatomy of the distribution and configuration of the arachnoid membranes of the base of the brain.

MATERIAL AND METHODS

The endoscopic and microsurgical anatomy of the arachnoid membranes of the brain base, the clival line, and the basal cisterns were studied on 20 cadaveric preparations with vessels pre-stained with colored silicone.

RESULTS

The basal attachment of the mesencephalic leaf of the Liliequist membrane and its caudal continuation in the form of a prepontine membrane on both sides of the basillar artery form a U-shaped thickening (clival line) on the outer arachnoid membrane, it serves as a reliable reference point for dissection of the surrounding arachnoid membranes during endoscopic third ventriculostomy (ETV). The proposed 4 types of perforation mechanisms, depending on the anatomical changes of the internal arachnoid membranes, make it possible to plan the ideal position of the stoma associated with the Liliequist membrane complex, which determines the long-term success of the operation.

CONCLUSION

The U-shaped thickening (clival line) on the outer arachnoid membranes serves as a reliable reference point for dissection of the surrounding arachnoid membranes during ETV.

Keywords:

arachnoid membrane

clivus line

neuroendoscopy

interpeduncular cistern

endoscopic third ventriculostomy (ETV)

Authors:

Alzahrani A.A.

Sechenov First Moscow State Medical University (Sechenov University)

ORCID: 0000-0001-7913-5394

Dydykin S.S.

Sechenov First Moscow State Medical University (Sechenov University)

ORCID: 0000-0002-1273-0356

Sufianov A.A.

Sechenov First Moscow State Medical University (Sechenov University);
Patrice Lumumba Russian Peoples’ Friendship University

SPIN RSCI: 1722-0448
Scopus AuthorID: 6603558501
ORCID: 0000-0001-7580-0385

Iakimov Yu.A.

Sechenov First Moscow State Medical University (Sechenov University);
Federal Center for Neurosurgery

ORCID: 0000-0001-6675-2051

Rustamov R.R.

Federal Center for Neurosurgery

ORCID: 0000-0003-3619-820X

Sufianov R.A.

Sechenov First Moscow State Medical University (Sechenov University)

ORCID: 0000-0003-4031-0540

Received:

28.06.2023

Accepted:

29.08.2023

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