Iliac Crest Of The Pelvic Girdle, Superior View

Description

Iliac crest anatomy is presented from a superior vantage, emphasizing the curved superior border of the ilium as it arcs from the anterior superior iliac spine (ASIS) to the posterior superior iliac spine (PSIS). The anterior segment of the crest lies anterolateral and transitions into the iliac tubercle, while the posterior segment sweeps posteromedially toward the auricular region adjacent to the sacroiliac articulation. Along the crest’s thickness, the outer (lateral) and inner (medial) lips frame the superior opening of the iliac fossa on the internal surface of the ilium. Palpable surface anatomy dominates this frame. These landmarks matter because clinicians rely on the iliac crest as a consistent reference for procedures and physical examination, including estimating the L4 vertebral level via the intercristal (Tuffier) line and planning posterior pelvic approaches near the PSIS. Orthopaedic and sports medicine teaching often returns to traction and overuse conditions at the iliac apophysis in adolescents, as well as crest fractures and avulsion patterns near the ASIS that can involve the sartorius and tensor fasciae latae origins. Bone graft harvest from the iliac crest also depends on understanding the crest’s contour and the relationship of the inner table to the iliac fossa to reduce risk to intra-abdominal structures. Landmarks are unambiguous. Use this illustration in gross anatomy lab manuals, musculoskeletal radiology correlation pages (pairing with pelvic inlet projections), and operative technique figures for iliac crest graft harvest and pelvic ring fixation planning. Anatomical accuracy verified by SciePro's Medical Advisory Board.