hepatorenal ligament hepatorenal ligament the hepatorenal ligament is the fold of peritoneum that extends from the lower posterior surface of the liver to the anterior surface of the right kidney. it forms the right margin of the lesser sac. hepatorenal ligamentdetailsfromlivertokidneyidentifierslatinligamentum hepatorenaleta98a10.1.02.306ta23777fma16519anatomical terminology structure the hepatorenal ligament extends from the lower posterior surface of the liver to the anterior surface of the right kidney. it forms the right margin of the lesser sac. history the term "hepatorenal ligament" is sometimes considered a synonym for the coronary ligament, and sometimes considered a component of it.