Which type of lumbar hernia is more common?
Superior lumbar hernia is more common than inferior lumbar hernia
What are the boundaries of the superior lumbar triangle?
Medial: Quadratus lumborum muscle; Superior: 12th rib; Lateral: Internal oblique muscle; Floor: Transversalis fascia and the aponeurosis of the transversus abdominis muscle of the abdomen; Roof: External oblique and latissimus dorsi muscles
Ultrasound of the left flank shows herniation of fat through a defect in the posterior fascia, which increases with Valsalva maneuver. The neck of the hernia measures approximately 1.1 cm. There is no herniation of bowel loops. The contralateral right side is shown for comparison.