triangular ligament triangular ligament triangular ligament may refer to: left triangular ligament of the liver (ligamentum triangulare sinistrum hepatis) right triangular ligament of the liver (ligamentum triangulare dextrum hepatis) urogenital diaphragm (diaphragma urogenitale), a layer of the pelvis this article is issued from wikipedia. the text is licensed under creative commons - attribution - sharealike. additional terms may apply for the media files.