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Background and purpose Lumbar hernias are rare, resulting from protrusion through the posterior abdominal wall that may be congenital, acquired or spontaneous.There are two types of lumbar hernia, the superior lumbar hernia through Grynfeltt triangle, and the inferior lumbar hernia through Petit triangle.Many techniques have been described for the surgical repair of lumbar hernias including primary repair, local tissue flaps, and conventional mesh repair.