Ilic Crest Of The Pelvic Girdle

Description

Iliac crest anatomy dominates this pelvic girdle illustration, tracing the long, arched superior border of the ilium from the anterior superior iliac spine (ASIS) to the posterior superior iliac spine (PSIS). Along the crest, the iliac tubercle appears on the lateral lip, while the medial and intermediate lips define attachment lines that continue into the iliac fossa medially and the gluteal surface laterally. The crest sits superior to the acetabulum and lateral to the sacroiliac region, establishing the palpable rim that frames the superior margin of the pelvis. Bony landmarks read cleanly. Clinically, the iliac crest is one of the most used surface landmarks in musculoskeletal exam and neuraxial procedures, because a line between the highest points of the crests (Tuffier’s line) approximates the L4 spinous process and guides lumbar puncture level selection. Orthopaedic and general surgeons also reference the ASIS and iliac tubercle when planning incisions for iliac crest bone graft harvest, where the outer table, inner table, and crest contour affect both graft volume and the risk of injury to the lateral femoral cutaneous nerve near the ASIS. Sports medicine teaching often returns to the apophysis at the iliac crest in adolescents, a traction site for abdominal wall musculature and tensor fasciae latae that can develop apophysitis or avulsion patterns. The fixed perspective and isolated bony detail make the crest’s curvature and palpable points easy to translate to hands-on anatomy. Use this illustration in gross anatomy and kinesiology courses to anchor osteology of the hip bone and muscle attachment mapping for the external oblique, internal oblique, transversus abdominis, and iliacus. It also suits orthopaedic surgical manuals, pain medicine references for lumbar puncture landmarks, and radiology teaching on pelvic and iliac wing fractures where crest continuity matters. Anatomical accuracy verified by SciePro's Medical Advisory Board.