Think of the abdomen as a bucket, or PAIL that contains the viscera.
These are the four groups of hernias:
Pelvic hernias: obturator, perineal, sciatic.
Anterior hernias: epigastric, incisional, Spigelian, supravesical, umbilical.
Inguinal hernias: indirect, direct, femoral.
Lumbar hernias: inferior lumbar triangle (Petit), superior lumbar triangle (Grynfelt)
