The iliac crest is the upper curved edge of the ilium, which is the largest bone in the pelvis. It serves as an important landmark for medical professionals and is easily felt on the sides of the body. The iliac crest provides attachment points for various muscles and ligaments, playing a crucial role in movement and stability. In addition to its anatomical significance, the iliac crest is often referenced in medical procedures, such as bone grafting. Surgeons may harvest bone from this area for use in reconstructive surgeries or to promote healing in other parts of the body.