A Lateral View Of The Hip Bone Showing The Acetabular Fossa

Description

Rotating into a true lateral orientation, the os coxae centers on the acetabulum, with the acetabular fossa exposed as the rough, nonarticular depression bordered by the horseshoe-shaped lunate surface. The anterior and posterior acetabular rims and the inferior acetabular notch frame the socket, while the ilium sits superiorly, the pubis anteroinferiorly, and the ischium posteroinferiorly as the three elements converge at the triradiate region. Subtle changes in lighting and angle track the depth of the fossa relative to the surrounding articular margin and the lateral contour of the pelvic girdle. Orientation is unambiguous. Acetabular fossa anatomy matters any time you need to distinguish articular cartilage from the central nonarticular floor of the socket, whether in hip arthroscopy, acetabular fracture reconstruction, or templating for total hip arthroplasty. The sequence clarifies how the acetabular notch interrupts the rim inferiorly and how rim overcoverage or undercoverage can be appreciated as a contour problem, a key teaching point in femoroacetabular impingement (pincer morphology) and developmental dysplasia of the hip. Seeing the rim and fossa in motion makes spatial relationships easier to retain than a single still, and it maps cleanly to what surgeons describe when referencing the acetabular clockface. Use this animation in gross anatomy and musculoskeletal anatomy courses to teach the bony components of the acetabulum, and in orthopaedic and radiology education to support discussions of acetabular morphology, hip preservation surgery, and arthroplasty planning. It also fits figure supplements for textbooks and review articles on FAI, acetabular fractures (posterior wall, both-column patterns), and rim trimming techniques. Anatomical accuracy verified by SciePro's Medical Advisory Board.