The surgical anatomy of the inferior lumbar space was made by Petit in 1783 and description of the superior lumbar space was made by Grynfeltt
, "Motion and Emotion: A Novel Approach to the Study of Face Processing by Young Autistic Children," Journal of Autism and Developmental Disorders, 2001, Vol.
Subsequently Petit and Grynfeltt described the anatomical boundaries of the inferior and superior lumbar triangles, respectively .
The superior lumbar triangle is described by Grynfeltt and the inferior lumbar triangle by Petit.
Chronic contained rupture of an abdominal aortic aneurysm presenting as a grynfeltt
lumbar hernia: a case report.
The superior lumbar space of Grynfeltt
and Lesshaft is the larger one.