The ilium is the largest and uppermost part of the hip bone. It is a large, flared bone that forms the superior portion of the pelvis.
Here are some examples of medical terms that use the root word "ilio":
* Iliocostalis muscle: A muscle that runs along the back of the ribs and connects to the ilium.
* Iliotibial band: A thick band of connective tissue that runs along the outside of the thigh, from the ilium to the tibia.
* Ilioinguinal nerve: A nerve that passes through the inguinal canal and innervates the skin of the groin and upper thigh.
* Iliopsoas muscle: A large muscle that flexes the hip and helps with rotation and abduction.