Scimitar sacrum

Scimitar sacrum, also known as sickle-shaped sacrum or hemisacral agenesis, is a unilateral, well-marginated, crescent-shaped defect in the lateral sacrum.


The expansion of a meningocele causes scalloping and lateral displacement of the sacral plate.


Scimitar sacrum is pathognomonic for anterior sacral meningocele. Scimitar sacrum, anorectal malformation, and presacral mass represent the Currarino triad.

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Article information

rID: 30504
Tag: cases
Synonyms or Alternate Spellings:
  • sickle shaped sacrum
  • hemisacral agenesis

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Cases and figures

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    Case 1: with anterior sacral meningocele
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