Inferior lumbar triangle

The inferior lumbar triangle, also known as the Petit triangle, is an anatomical space through which inferior lumbar hernias can occur. It is not to be confused with the adjacent superior lumbar triangle (of Grynfeltt-Lesshaft).

The first description of the inferior or superficial lumbar hernia by French surgeon Jean-Louis Petit (1672-1750) in 1738 4,5.

Anatomy: Abdominopelvic

Anatomy: Abdominopelvic

Article information

rID: 25486
Section: Anatomy
Synonyms or Alternate Spellings:
  • Triangle of Petit
  • Petit triangle
  • Inferior lumbar triangle of Petit

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Cases and figures

  • Figure 1: superior and inferior lumbar triangles
    Drag here to reorder.
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