Accessory superior acetabular notch

Changed by Henry Knipe, 12 Jan 2016

Updates to Article Attributes

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Anaccessory superior acetabular notchis a normal normal variant of the acetabulum, thatwhich can also be seen on radiographs and which does not infrequently. It may lead to diagnostic confusion, especially in younger patients. 

Radiographic features

MRI
  • appear as bilateral symmetric fluid-filled pits in the roof of the acetabulum with sharp margins

Differential diagnosis

  • -<p>An <strong>accessory superior acetabular notch</strong><strong> </strong>is a normal variant of the <a href="/articles/acetabulum">acetabulum</a>, that can also be seen on radiographs and which does not infrequently lead to diagnostic confusion, especially in younger patients. </p><h4>Radiographic features</h4><h5>MRI</h5><ul><li>appear as bilateral symmetric fluid-filled pits in the roof of the acetabulum with sharp margins</li></ul><h4>Differential diagnosis</h4><ul><li><a href="/articles/supra-acetabular-fossa">supra-acetabular fossa</a></li></ul>
  • +<p>An <strong>accessory superior acetabular notch</strong><strong> </strong>is a normal variant of the <a href="/articles/acetabulum">acetabulum</a>, which can be seen on radiographs. It may lead to diagnostic confusion, especially in younger patients. </p><h4>Radiographic features</h4><h5>MRI</h5><ul><li>appear as bilateral symmetric fluid-filled pits in the roof of the acetabulum with sharp margins</li></ul><h4>Differential diagnosis</h4><ul><li><a href="/articles/supra-acetabular-fossa">supra-acetabular fossa</a></li></ul>
Images Changes:

Image 1 Diagram (Frontal) ( update )

Ddx was set to .
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FossaFigure 1: notch vs notch. fossa

Image 2 X-ray (Frontal) ( create )

Image 3 CT (bone window) ( create )

Image 5 MRI (STIR) ( update )

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Case 12: MRI
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