What are the anatomic features of the superior lumbar triangle of Grynfeltt-Lesshaft in relation to abdominal hernias?

Updated: Jul 23, 2019
  • Author: Assar A Rather, MBBS, MD, FACS; Chief Editor: John Geibel, MD, DSc, MSc, AGAF  more...
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Answer

The superior lumbar triangle of Grynfeltt-Lesshaft is bounded superiorly by the 12th rib, the posterior lumbocostal ligament, and the serratus posterior inferior; inferiorly by the superior border of the internal oblique muscle; and posteriorly by the lateral border of the sacrospinalis. The deep margin of the superior lumbar triangle is the transversus abdominis, and the superficial margin is the latissimus dorsi. Spontaneous lumbar hernias occur more commonly because the potential space is larger and more constant than the inferior lumbar triangle.


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