Lumbar Hernia

Terminology

• Lumbar hernia: Protrusion of abdominal contents through defect in lumbar region

  • Can occur in either superior lumbar triangle of Grynfeltt-Lesshaft or inferior lumbar triangle of Petit

    • –

      Superior lumbar triangle of Grynfeltt-Lesshaft defined by 12th rib superiorly, superior border of internal oblique inferiorly, and erector spinae medially

    • –

      Inferior lumbar triangle of Petit defined by latissimus dorsi muscle medially, iliac crest inferiorly, and free border of external oblique muscle laterally

  • Overall, hernias are more common in superior triangle