The Structure And Location Of The Hip Bone's Acetabular Notch

Description

Oriented on the os coxae, the acetabulum comes into view as a deep hemispheric socket on the lateral aspect of the pelvic girdle, with the acetabular notch positioned inferiorly where the articular lunate surface is interrupted. The sequence typically tracks around the acetabular rim and then settles on the notch at the 6 o’clock position, clarifying its relationship to the anterior and posterior horns of the lunate surface and the nonarticular acetabular fossa. As the viewpoint rotates, adjacent landmarks such as the obturator foramen inferior to the acetabulum and the ilium superiorly help anchor the notch in three-dimensional space. Clear bony topography. Clinically, the acetabular notch is more than a simple gap: it is bridged by the transverse acetabular ligament, completing the acetabular rim and defining a protected passage for intra-articular structures. The animation helps learners understand how the ligament spans the notch and how the acetabular labrum attaches to the rim but blends into the transverse acetabular ligament inferiorly, a detail that matters when interpreting hip arthroscopy findings and labral tear patterns. It also supports discussion of the acetabular branch of the obturator artery and other small vessels that can be encountered near the inferior acetabulum, with implications for surgical exposure and hemostasis. Use this animation in gross anatomy and musculoskeletal modules when introducing the hip joint and pelvic skeleton, or in orthopedic and sports medicine teaching when explaining inferior acetabular landmarks relevant to arthroscopy portals and labral repair. It also fits radiology education as a spatial primer before correlating CT or MR arthrography of the acetabular rim and labrum. Anatomical accuracy verified by SciePro's Medical Advisory Board.