Author: Jared Scott M.D. Educational Pearls: There are two anatomical triangles on the back, the inferior lumbar triangle and the superior lumbar triangle. Herniation occurs whenever something moves to a place where it is not supposed to be, often through a fascial weakness. A “back hernia” can happen when the contents of of the abdominal cavity herniate into the back, usually through the superior lumbar triangle. This is also known as a Grynfeltt-Lesshaft hernia. Back hernias can be traumatic or congenital. These hernias are typically treated surgically. References: https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3959346/