Final answer:
The junction of the ilium, ischium, and pubis is called the pubic symphysis, a specialized joint that provides stability to the pelvis.
Step-by-step explanation:
The junction of the ilium, ischium, and pubis is known as the pubic symphysis. This specialized joint is located in the anterior portion of the hip bone, where the pubis of one hip bone joins the pubis of the opposite hip bone. The pubic symphysis allows for limited movement and helps to provide stability to the pelvis.