A Grynfeltt-Lesshaft hernia is a herniation through the superior lumbar (Grynfeltt-Lesshaft) triangle. The superior lumbar triangle is bordered medially by the quadratus lumborum muscle, superiorly by the 12th rib, and laterally by the internal oblique muscle. The floor of the lumbar triangle is the transversalis fascia and the aponeurosis of the transversalis muscle of the abdomen. The roof of the triangle is the external oblique and latissimus dorsi muscles.
References
Orcutt TW. Hernia of the superior lumbar triangle. Ann Surg. 1971 Feb;173(2):294-7.
A Grynfeltt-Lesshaft hernia is a herniation through the superior lumbar (Grynfeltt-Lesshaft) triangle. The superior lumbar triangle is bordered medially by the quadratus lumborum muscle, superiorly by the 12th rib, and laterally by the internal oblique muscle. The floor of the lumbar triangle is the transversalis fascia and the aponeurosis of the transversalis muscle of the abdomen. The roof of the triangle is the external oblique and latissimus dorsi muscles.
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