Hip Bone Showing The Greater Sciatic Notch, Medial View

Description

Hip bone anatomy is presented from the medial aspect, centering on the greater sciatic notch as a broad concavity along the posterior border of the os coxae. Superiorly, the notch is bounded by the posterior inferior iliac spine of the ilium, while inferiorly it narrows toward the ischial spine on the ischium, placing the indentation between iliac and ischial components across the posterior pelvic margin. The adjacent internal surface of the ilium and the posterior contour leading toward the ischial body are visible in fixed relationship, reinforcing the notch’s position posterior and slightly inferior to the iliac fossa region. A palpable landmark. Clinically, the greater sciatic notch becomes the greater sciatic foramen when bridged by the sacrospinous ligament (to the ischial spine) and sacrotuberous ligament, creating the exit corridor for the sciatic nerve and superior and inferior gluteal neurovascular bundles. This medial view helps learners connect the notch to the ischial spine, a key landmark for pudendal nerve block technique and for orienting pelvic floor repairs where the sacrospinous ligament is targeted near its ischial attachment. The emphasis on bony margins, without soft-tissue distraction, supports accurate mental mapping for both surface anatomy and operative planning around the posterior pelvis. Use this illustration in gross anatomy and pelvic anatomy coursework when teaching the boundaries of the greater sciatic notch and how it relates to the ilium and ischium, or in orthopedic and pelvic surgery texts discussing posterior pelvic landmarks and approaches near the ischial spine. It also fits radiology teaching files that correlate pelvic CT or MRI orientation to osseous landmarks used to localize the sciatic notch region. Anatomical accuracy verified by SciePro's Medical Advisory Board.