[TA] origin, anterior division of internal iliac, with an accessory or replaced obturator artery arising from the inferior epegastric artery as often as 20% of the time; anastomoses, iliolumbar, inferior epigastric, medial circumflex femoral; distribution, ilium, pubis, obturator, and adductor muscles; branches, pubic, acetabular, anterior, and posterior. SYN: arteria obturatoria [TA].