Skeletal Structure And Location Of The Obturator Crest

Description

Obturator crest on the superior ramus of the pubis is highlighted as a sharp ridge forming part of the anterosuperior margin of the obturator foramen. Medial to it lie the pubic body and symphyseal surface, while laterally the ridge tracks toward the acetabular region of the hip bone, bridging visually between the pubis and the anterior column of the pelvis. Along its superior aspect, the crest aligns with the pecten pubis (pectineal line), and inferiorly it drops toward the obturator groove where the bony rim contributes to the obturator canal. Bony landmarks remain crisp. Clinically, this is a surgical and radiologic landmark because the obturator crest and adjacent groove frame the passage of the obturator nerve, artery, and vein, and small variations in the canal’s bony boundaries can matter during obturator hernia repair or when evaluating pelvic ring trauma. For anterior approaches to the acetabulum and pubic root (including modified Stoppa and ilioinguinal exposures), appreciating how the superior pubic ramus thickens around the obturator margin helps you anticipate safe retractor placement and avoid iatrogenic injury to the obturator bundle, which sits just posteroinferior to the pubic ramus at the canal. It also anchors discussion of fracture lines that propagate through the pubic root into the anterior acetabular column. Use this illustration in gross anatomy teaching on the bony pelvis, in orthopedic and trauma publications describing anterior column fractures, or in surgical education materials for obturator hernia repair and pelvic approaches where the obturator canal must be oriented to nearby pubic landmarks. Anatomical accuracy verified by SciePro's Medical Advisory Board.