Vertebral vascular foramen

Last revised by Tariq Walizai on 5 Jul 2024

Vertebral vascular foramina, also known as Hahn canal or cleft, are normal findings seen on cross-sectional imaging and should not be mistaken for a fracture, especially in the setting of trauma. They transmit:

  • basivertebral veins (forms Hahn's canal): foramen is seen on the posterior surface of the vertebral body in the midline

  • intraosseous nutrient arteries: foramen usually seen anterolaterally

  • basivertebral nerve

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