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Cervical venous organization in the transverse foramen.

Olivier Palombi1, Stephane Fuentes, Philippe Chaffanjon

  • 1Anatomy Laboratory, Joseph Fourier University Medical School, Grenoble, France. OPalombi@chu-grenoble.fr

Surgical and Radiologic Anatomy : SRA
|October 1, 2005
PubMed
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The transverse canal contains no veins; instead, venous blood flows through periosteal spaces resembling intracranial sinuses. This challenges previous anatomical descriptions of the vertebral artery venous network.

Area of Science:

  • Anatomy
  • Vascular Biology
  • Surgical Anatomy

Background:

  • Current understanding describes veins accompanying the vertebral artery within the transverse foramen.
  • A venous network, the internal vertebral venous plexus, is thought to surround the thecal sac.

Purpose of the Study:

  • To precisely define the venous anatomy within the transverse canal using microdissection and histology.
  • To clarify the vascular structures surrounding the vertebral artery in the cervical spine.

Main Methods:

  • Microdissection and histological analysis of six human cervical spinal segments (C1-C7).
  • Embalming, latex injection, decalcification, and staining with H&E-S and immunocytochemical markers (CD43, CD31, desmin).

Main Results:

Related Experiment Videos

  • No definitive veins were identified within the transverse canal itself.
  • Venous blood flow occurs within periosteal spaces between transverse processes.
  • These spaces are lined by vascular endothelium, forming a sinus-like structure around the vertebral artery.

Conclusions:

  • The venous system in the transverse canal functions as a periosteal sinus, not as discrete veins.
  • This finding refines the anatomical understanding of the vertebral venous system and its surgical implications.