The posterior abdominal wall is a complex musculoskeletal structure that houses the abdominal aorta, the inferior vena cava, as well as important retroperitoneal organs, like the kidneys, renal glands, pancreas, and duodenum. This vital anatomical structure consists of the posterior abdominal muscles, their respective fascia, lumbar vertebrae, and the pelvic girdle. The structure is supported by 12th thoracic rib, lumbar vertebrae, and pelvic rim.