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Marking the Inferior Point
of the Pre Sacral Triangle

The Inferior Point of the Pre Sacral Triangle

in red at the bottom of the triangle ( area 1)

The pre sacral space is inside the pelvis,behind the rectum and in front of the coccyx and sacrum.

The Limits of the Pre Sacral Triangle

  • The 2 upper lateral points correspond to postero superior iliac spines ( in green)
  • The inferior point of the pre sacral triangle corresponds to the apex of the sacral triangle  (in red)

Finding the inferior point of the pre sacral triangle by inspection

On the upper part of the inter gluteal cleft,at the intersection between the superficial cleft and the deep cleft .

confirm the inferior point of the pre sacral triangle by palpation

Use the 5 th finger to find by palpation the bony inferior point of the pre sacral triangle .