A. Anatomic perineal view of obturator foramen. B. Schematic perineal view of obturator foramen. Nyangoh TimohKrystel BaderGeorges FauconnierArnaud BarrauVincent DelmasVincent TouboulCyril 2015 <p>The posterior obturator artery (POA), anterior obturator artery (AOA) and obturator artery bifurcation (BOA) are represented. POA and AOA form a circle.</p>