Coup de poignard of Michon

Changed by Rohit Sharma, 23 May 2023
Disclosures - updated 17 Aug 2022: Nothing to disclose

Updates to Article Attributes

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Coup de poignard of Michon refers to spinal subarachnoid haemorrhage, usually as a result of a spinal AVMarteriovenous malformation (AVM).

Clinical presentation

Presentation is with sudden excruciating back pain, akin to being stabbed with a dagger (poignard = frenchis French for dagger). It is the corollary of the thunderclap headache.

  • -<p><strong>Coup de poignard of Michon</strong> refers to spinal <a href="/articles/subarachnoid-haemorrhage">subarachnoid haemorrhage</a>, usually as a result of a <a href="/articles/spinal-avm">spinal AVM</a>. </p><p>Presentation is with sudden excruciating back pain, akin to being stabbed with a dagger (poignard = french for dagger). It is the corollary of the <a href="/articles/thunderclap-headache">thunderclap headache</a>. </p>
  • +<p><strong>Coup de poignard of Michon</strong> refers to spinal <a href="/articles/subarachnoid-haemorrhage">subarachnoid haemorrhage</a>, usually as a result of a <a href="/articles/spinal-avm">spinal arteriovenous malformation (AVM)</a>.</p><h4>Clinical presentation</h4><p>Presentation is with sudden excruciating back pain, akin to being stabbed with a dagger (poignard is French for dagger). It is the corollary of the <a href="/articles/thunderclap-headache">thunderclap headache</a>.</p>

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Images Changes:

Image 1 DSA (angiography) (Arterial perforation) ( update )

Caption was changed:
Case 1: Arterialarterial perforation

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