superior lumbar triangle
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Inferior
lumbar triangle • Lumbar hernia (illustrations) - Ganzer Fall bei Radiopaedia
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The superior lumbar triangle, also known as the triangle of Grynfeltt-Lesshaft, is one of the locations for a lumbar hernia. It is not to be confused with the adjacent inferior lumbar triangle (of Petit).
Gross anatomy
Boundaries
- medially: the quadratus lumborum muscle
- superiorly: twelfth rib
- laterally: internal oblique muscle
- floor: transversalis fascia and the aponeurosis of the transversus abdominis muscle of the abdomen
- roof: external oblique and latissimus dorsi muscles
Related pathology
History and etymology
J Grynfeltt and P Lesshaft independently described superior lumbar hernias in 1866 and 1870 , respectively.
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