Rotational occlusion of the vertebral artery

Rotational occlusion of the vertebral artery, also known as Bowhunter syndrome, is a rare form of posterior cerebral circulation ischemia secondary to dynamic compromise of the dominant vertebral artery.

It has many aetiologies, but is most often due to large osteophytes or atlanto-axial hypermobility.

Radiographics features


The diagnosis is established using provocative digital subtraction cerebral angiography, in which the patient reproduces symptomatic movements, and the site of vertebral artery compression may be identified.

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Article information

rID: 30742
Tag: cases
Synonyms or Alternate Spellings:
  • Bow hunter syndrome
  • Bowhunter syndrome
  • Bowhunter's syndrome

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