Superior lumbar triangle

Last revised by Daniel J Bell on 23 Nov 2021

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).

The French surgeon Joseph Casimir Grynfeltt (1840-1913) 7 and Russian physician Peter Frantsevich Lesshaft (1837-1909) 7 independently described superior lumbar hernias in 1866 3 and 1870 2, respectively.

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