A Lateral View Of The Hip Bone Displaying The Lunate Surface Of Acetabulum

Description

Rotating through a true lateral perspective of the os coxae, the animation centers on the acetabulum and its crescentic lunate surface, the hyaline cartilage bearing zone that faces laterally, inferiorly, and slightly anteriorly for articulation with the femoral head. The nonarticular acetabular fossa sits medial and central within the socket, while the acetabular notch interrupts the inferior rim where the transverse acetabular ligament would bridge in life. As the sequence turns the bone, the acetabular rim is read in relation to the anterior inferior iliac spine superiorly, the body of the ischium posteroinferiorly, and the pubic component anteroinferiorly. Teaching the acetabulum without motion often collapses into a flat “cup” concept, yet load transmission across the hip depends on how the lunate surface wraps around the superior dome and how the socket opens laterally. That matters in femoroacetabular impingement, where pincer morphology reflects acetabular overcoverage at the rim, and in acetabular fractures, where posterior wall involvement is judged by the extent of the articular lunate surface at risk of instability. The rotating lateral view makes it easier to link the articular margin to the inferior notch and to understand why the fossa does not contribute to weight bearing. Use this animation in gross anatomy and musculoskeletal radiology teaching when correlating pelvic osteology with AP pelvis and Judet views, or in orthopaedic education for preoperative planning discussions around acetabular fixation and total hip arthroplasty cup placement. It also fits well in textbook sidebars explaining hip joint congruency and the distinction between articular lunate surface and acetabular fossa. Anatomical accuracy verified by SciePro's Medical Advisory Board.