Doctoral School, Faculty of Medicine, "Victor Babeş" University of Medicine and Pharmacy, Timișoara, RO-300041, Romania.
Division of Anatomy, Department 1, Faculty of Dentistry, "Carol Davila" University of Medicine and Pharmacy, RO-020021, Bucharest, 050474, Romania.
Surg Radiol Anat. 2024 Dec;46(12):1949-1953. doi: 10.1007/s00276-024-03498-4. Epub 2024 Oct 5.
The vertebral artery (VA) pierces the dura mater and continues with the intradural V4 segment. Once entered into the dura mater, the VA ascends from the infero-lateral to the antero-superior side of the medulla. Scarce reports of VAs compressing the medullospinal junction (MSJ) are available. We therefore aimed to determine the incidence of a course of the AV over the MSJ.
One hundred sixty-two archived CT angiogram files were documented in the study. We recorded the cases in which the VA crossed the MSJ. We assessed the VA as dominant, non-dominant or co-dominant.
In 32 cases (19.75%), we identified intradural AVs on the ventral side of the MSJs. The incidence of this course of the VA was 17.1% in males and 23.81% in females. Of the 32 cases, the VA was non-dominant in 6, dominant in 14, and co-dominant in 12.
The VA course over the MSJ is not rare. Therefore, when specific neurological signs of MSJ or medulla compression are found, the course of the VA should be documented on CT or MRI angiograms.
椎动脉（VA）穿过硬脑膜，继续沿硬脑膜内的 V4 段走行。一旦进入硬脑膜，VA 从下外侧向上前侧上升穿过延髓。VA 压迫脊髓-延髓连接部（MSJ）的报道很少。因此，我们旨在确定 VA 在 MSJ 上走行的发生率。
研究中记录了 162 份存档的 CT 血管造影文件。我们记录了 VA 穿过 MSJ 的病例。我们将 VA 评估为优势、非优势或共优势。
在 32 例（19.75%）中，我们在 MSJ 的腹侧发现了硬膜内 AV。VA 在 MSJ 上走行的发生率在男性中为 17.1%，在女性中为 23.81%。在这 32 例中，VA 为非优势的有 6 例，优势的有 14 例，共优势的有 12 例。
VA 在 MSJ 上的走行并不罕见。因此，当发现 MSJ 或延髓受压的特定神经症状时，应在 CT 或 MRI 血管造影上记录 VA 的走行。
