Auricular surface of the ilium

Definition

The auricular surface of the ilium is a part of the pelvic bone that articulates with the sacrum to form the sacroiliac joint, contributing to the stability and flexibility of the pelvic girdle. It is characterized by its ear-like shape and rough surface, which increases friction and facilitates the firm attachment of ligaments.

Related terms

Sacroiliac Joint:

A joint between the sacrum and ilium bones of the pelvis, which functions as a shock absorber in transmitting forces from the upper body to the lower limbs.

Pelvic Girdle: The ring-like bony structure near the base of the spine that supports the spinal column and connects it to the lower limbs, consisting of two hip bones (each including an ilium), sacrum, and coccyx.

Ligaments:

Fibrous connective tissues that connect bones or cartilage at joints, providing stability and limiting excessive movement