Anatomical Structure and Location of the Pelvis

Description

Centered on the female bony pelvis, the paired os coxae form a basin with the iliac crests superiorly, the acetabula laterally, and the pubic symphysis at the anterior midline. Along the pelvic brim, the sacroiliac joints sit posterolaterally, while the obturator foramina open inferior to the pubic rami and medial to the hip joints. Overlying and crossing this framework, the iliopsoas courses anterior to the hip and toward the lesser trochanter, the adductor group occupies the medial proximal thigh, and the pelvic floor musculature spans between pubis and coccyx to support the pelvic viscera. Color-coded neurovascular elements trace expected routes: internal iliac branches distribute along the lateral pelvic wall, veins accompany them, and lumbosacral plexus contributions descend toward the obturator canal and greater sciatic foramen. Spatial relationships matter here. Female pelvic morphology is not an academic footnote, it drives obstetric mechanics and changes the way pelvic trauma presents and is stabilized. A wider subpubic angle, broader pelvic inlet, and more flared iliac wings influence cephalopelvic relationships and help explain why pubic rami fractures and symphyseal diastasis can destabilize the anterior ring while sparing the acetabulum. The close apposition of the obturator nerve and vessels to the superior pubic ramus also makes this region a frequent pain generator in obturator hernia and a surgical hazard during pelvic lymphadenectomy, retropubic sling placement, and acetabular approaches. Use this artwork in gross anatomy and pelvic floor modules to teach the transition from pelvic brim to true pelvis, and to orient learners to the internal iliac vascular tree in relation to the pelvic sidewall. It also suits OB-GYN texts discussing pelvic inlet and outlet dimensions, and surgical education on hysterectomy, internal iliac artery ligation, and pudendal nerve block landmarks. Anatomical accuracy verified by SciePro's Medical Advisory Board.