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Morphology of the groove of the inferior petrosal sinus: application to better understanding variations and surgery of the skull base

  • Uduak-Obong I. Ekanem (Tulane University School of Medicine) ;
  • Lukasz Olewnik (Department of Anatomical Dissection and Donation, Medical University of Lodz) ;
  • Andrea Porzionato (Section of Human Anatomy, Department of Neuroscience, University of Padova) ;
  • Veronica Macchi (Section of Human Anatomy, Department of Neuroscience, University of Padova) ;
  • Joe Iwanaga (Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine) ;
  • Marios Loukas (Department of Anatomical Sciences, St. George's University ) ;
  • Aaron S. Dumont (Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine) ;
  • Raffaele De Caro (Section of Human Anatomy, Department of Neuroscience, University of Padova) ;
  • R. Shane Tubbs (Department of Neurosurgery, Tulane Center for Clinical Neurosciences, Tulane University School of Medicine)
  • 투고 : 2022.02.03
  • 심사 : 2022.03.30
  • 발행 : 2022.06.30

초록

Although adequate venous drainage from the cranium is imperative for maintaining normal intracranial pressure, the bony anatomy surrounding the inferior petrosal sinus and the potential for a compressive canal or tunnel has, to our knowledge, not been previously investigated. One hundred adult human skulls (200 sides) were observed and documented for the presence or absence of an inferior petrosal groove or canal. Measurements were made and a classification developed to help better understand their anatomy and discuss it in future reports. We identified an inferior petrosal sinus groove (IPSG) in the majority of specimens. The IPSG began anteriorly where the apex of the petrous part of the temporal bone articulated with the sphenoid part of the clivus, traveled posteriorly, in a slight medial to lateral course, primarily just medial to the petro-occipital fissure, and ended at the anteromedial aspect of the jugular foramen. When the IPSGs were grouped into five types. In type I specimens, no IPSG was identified (10.0%), in type II specimens, a partial IPSG was identified (6.5%), in type III specimens, a complete IPSG (80.0%) was identified, in type IV specimens, a partial IPS tunnel was identified (2.5%), and in type V specimens, a complete tunnel (1.0%) was identified. An improved knowledge of the bony pathways that the intracranial dural venous sinuses take as they exit the cranium is clinically useful. Radiological interpretation of such bony landmarks might improve patient diagnoses and surgically, such anatomy could decrease patient morbidity during approaches to the posterior cranial fossa.

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과제정보

The authors sincerely thank those who donated their bodies to science so that anatomical research could be performed. Results from such research can potentially increase mankind's overall knowledge that can then improve patient care. Therefore, these donors and their families deserve our highest gratitude [22]. The authors state that every effort was made to follow all local and international ethical guidelines and laws that pertain to the use of human cadaveric donors in anatomical research [23].

참고문헌

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