What is the ridge of the Ilium called?

The ridge of the ilium is termed the iliac crest. This structure forms the superior border of the ilium, which is the largest of the three bones that make up the hip bone (pelvis). The iliac crest is notable for several reasons: it serves as an important landmark in anatomy, providing attachment points for muscles and ligaments, and is easily palpable on a physical examination. Its prominence also assists in the diagnosis of various conditions and injuries related to the pelvis and the lower back.

Understanding the anatomy of the iliac crest is essential for orthopedic technologists, as both clinical practices and surgical procedures may involve this area. The other terms listed, while related to the pelvis and hip anatomy, refer to distinct structures that do not specifically denote the ridge of the ilium. For instance, the pubic symphysis is a cartilaginous joint located between the left and right pubic bones, the sacrum is a triangular bone at the base of the spine, and the ilium tuberosity refers to a different area of the ilium that serves as an attachment for ligaments rather than being a prominent ridge.