Posterior Gluteal Line Of The Hip Bone, Lateral View

Description

Posterior gluteal line on the lateral (gluteal) surface of the ilium is centered in this image as a short, curved ridge running inferiorly from the iliac crest toward the posterior aspect of the iliac wing (ala). Superiorly, the line lies just deep to the iliac crest, while inferiorly it trends toward the region above the greater sciatic notch, remaining posterior to the anterior and inferior gluteal lines that typically arc more anteriorly across the gluteal surface. Posterior iliac landmarks, including the posterior superior iliac spine and the posterior border of the iliac wing, sit medial and posterior to the ridge, providing orientation without obscuring the line itself. A bony ridge, not a groove. Understanding the posterior gluteal line matters because it maps muscular territory on the ilium: gluteus maximus takes origin posterior to this line, while gluteus medius occupies the area between the posterior and anterior gluteal lines, a relationship that underpins safe dissection planes and surface anatomy teaching. In hip surgery, these attachment zones relate directly to the posterolateral approach and to injection safety concepts, since the superolateral quadrant targets gluteus medius while avoiding the sciatic nerve that lies deeper and more inferior near the greater sciatic notch. The lateral perspective also helps clarify common confusion between the posterior gluteal line and the posterior border of the ilium, which are close in position but distinct landmarks. Use this illustration in pelvic osteology labs, functional anatomy courses on the gluteal region, and orthopedic or sports medicine publishing where accurate depiction of gluteal origins supports discussions of tendinopathy, avulsion injury patterns, and approach-related muscle splitting. It also suits atlases covering the hip bone’s external surface for radiologic correlation and fracture pattern orientation. Anatomical accuracy verified by SciePro's Medical Advisory Board.