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Vertebral Artery Test

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Other Names

Demonstration of the Vertebral Artery Test[1]
  • Extension Rotation Test



  • The patient is supine
  • Head hangs off the table in examiners hands
  • Examiner helps patient rotated head to affected side and holds position for 10 seconds
  • The patient is returned to neutral for 10 seconds
  • The head is then extended and rotated to the affected side for 10 seconds
  • Repeat testing on unaffected side
  • Positive test is reproduction of symptoms including:
    • dizziness, diplopia, dysarthria, dysphagia, drop attacks, nausea and vomiting, sensory changes, nystagmus


  • Vertebrobasilar Insufficiency (VBI)


  • Unknown

See Also


  1. Image courtesy of https://www.thestudentphysicaltherapist.com/, "Vertebral Artery Test"
Created by:
John Kiel on 13 August 2019 23:48:58
Last edited:
25 May 2023 07:46:31