Dural Sac Exposure
Dural Sac Exposure - Related Videos
08:38
Exposure of the Pig CNS for Histological Analysis: A Manual for Decapitation, Skull Opening, and Brain Removal
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Cited by 26 •
2017
The goal of this paper and instructional video is to describe how to expose and remove the postmortem pig brain and pituitary gland in an intact state, suitable for subsequent macroscopic and histological analysis.
10:38
Isolation of Early Hematopoietic Stem Cells from Murine Yolk Sac and AGM
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Cited by 19 •
2008
This video shows how to micro-dissect the yolk sac and aorta-gonad-mesonephros region from embryos and use flow cytometry to sort hematopoietic stem cells.
04:34
Surgical Treatment of an Endolymphatic Sac Tumor
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Cited by 1 •
2023
Here, we discuss clinical and radiological features of endolymphatic sac tumors and report the methodology and results of a surgical removal in a case in care at our otologic referral center.
11:53
Primary Endodermal Epithelial Cell Culture from the Yolk Sac Membrane of Japanese Quail Embryos
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Cited by 6 •
2016
To study the mechanism of lipid utilization in yolk sac membranes during the late stages of avian embryonic development, we established a primary Japanese quail embryonic endodermal epithelial cell culture system.
04:34
Dissection of the Endolymphatic Sac from Mice
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Cited by 5 •
2021
This study describes how to dissect the endolymphatic sac from the inner ear of the mouse at different ages. The result of a similar dissection is shown in an Slc26a4-null mouse model of enlargement of the endolymphatic sac. A transgenic mouse with a fluorescent reporter expressed in the endolymphatic sac is presented as a model to readily visualize the endolymphatic sac, and educational tool.
FAQs
The bony opening determines how much of the spinal canal becomes accessible. A laminectomy removes portions of the vertebral arch, whereas a laminotomy removes or reshapes them more selectively. This choice affects the working corridor to the dura and nearby anatomy, allowing surgeons to balance visualization with preservation of surrounding structures during spinal procedures.
Retraction and dural opening serve different access goals. Retracting the dura can expose or position the membrane without entering the dural compartment, while opening it permits intradural access when the target lies within the protective covering. The distinction matters because the approach must provide adequate visualization while limiting manipulation of the spinal cord, cauda equina, blood vessels, and membranes.
Exposure quality depends on controlled separation of posterior soft tissues and careful management of the vertebral arch and dura. Excessive or poorly directed manipulation can jeopardize neural tissue, vessels, or protective membranes. Thus, the useful outcome is not simply a larger opening; it is a clear operative view achieved with the least disruptive access compatible with the intended target.
After posterior soft tissues are separated, the surgeon removes or reshapes part of the vertebral arch through laminectomy or laminotomy. The dura is then retracted, or opened if intradural access is necessary. These stages create the operative corridor and should be coordinated to maintain visualization while avoiding unnecessary disturbance of neural structures and protective membranes.
Its uses include operations involving spinal tumors, nerve-root pathology, and cerebrospinal fluid disorders, as well as experimental studies of spinal anatomy. The relevant target may be within the dural compartment or adjacent to the spinal canal, so the extent and type of exposure are selected according to the access needed for the clinical or investigative purpose.
In neuroscience, the approach provides direct visual access to the coverings and structures associated with the spinal cord and cauda equina. That access supports examination of spinal anatomy and treatment of selected canal-related conditions. Its value lies in improving visualization while preserving neural tissue, blood vessels, and protective membranes as much as the procedure permits.