Vascular Anatomy of the Spinal Cord by Armin K. Thron

Author:Armin K. Thron
Language: eng
Format: epub
Publisher: Springer International Publishing, Cham

The extradural but intraspinal internal venous vertebral plexus.

The extradural and extraspinal venous vertebral plexus communicating with the azygos and cava system.

Technical Remarks

In comparison to the spinal arteries, the variability of the draining venous system is even greater. Due to a restricted number of specimens (Table 1.​1 and Sect. 1.​3), the presented images in this chapter should be considered rather as illustrative examples than as statistically confimed results. For the veins, we re-evaluated the radicular drainage, which is easier on the opened vertebral canal in situ (Jacobs 1996). Concerning the intramedullary system of veins importance was attached to the most complete venous filling possible for large medullary segments, which requires even better preserved specimens and much practical experience to avoid extravasations. Filling defects in some of the specimens are probably a result of intraluminal coagulation. On the other hand, a loss of contrast medium from large superficial vessels upon sectioning must be expected. In certain illustrative microangiograms the empty lumen of a large superficial vessel was therefore marked with “ev” (empty vessel).

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