Anterior superior iliac spine

The anterior superior iliac spine (abbreviated: ASIS) is a bony projection of the iliac bone and an important landmark of surface anatomy.It refers to the anterior extremity of the iliac crest of the pelvis, which provides attachment for the inguinal ligament, and the sartorius muscle. The tensor fasciae latae muscle attaches about 5 cm away at the iliac tubercle.Right hip bone. External surface.Right hip bone. Internal surface.The subcutaneous inguinal ring.ASIS visible at top left, as the origin of several muscles.Location of McBurney's point (1), which is located two thirds the distance from the umbilicus (2) to the anterior superior iliac spine (3). The anterior superior iliac spine (abbreviated: ASIS) is a bony projection of the iliac bone and an important landmark of surface anatomy.It refers to the anterior extremity of the iliac crest of the pelvis, which provides attachment for the inguinal ligament, and the sartorius muscle. The tensor fasciae latae muscle attaches about 5 cm away at the iliac tubercle.