Coccyx

Definition

The coccyx, often referred to as the tailbone, is a small bone located at the base of the vertebral column. It is composed of three to five fused vertebrae and serves as an attachment site for ligaments and muscles of the pelvic floor.

Related terms

Vertebral column: The vertebral column is a series of interconnected bones that extend from the skull to the coccyx, providing structural support and protecting the spinal cord.

Pelvic floor: The pelvic floor consists of muscles and ligaments that stretch across the pelvis, supporting organs such as the bladder, intestines, and in women, the uterus, with attachments to structures like the coccyx.

Sacrum:

The sacrum is a large, triangular bone at the base of the spine above the coccyx that connects with the hip bones to form part of the pelvis