Inferior lumbar triangle

Last revised by Dr Henry Knipe on 15 Sep 2021

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).

Gross anatomy

Boundaries

Related pathology

History and etymology

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

ADVERTISEMENT: Supporters see fewer/no ads

Cases and figures

  • Figure 1: superior and inferior lumbar triangles
    Drag here to reorder.
  • Updating… Please wait.

     Unable to process the form. Check for errors and try again.

     Thank you for updating your details.