Sacrococcygeal symphysis

Sacrococcygeal symphysis is a joint, or symphysis, located at the base of the spine, connecting the sacrum and the coccyx, or tailbone. This joint is composed of fibrocartilage and allows for limited movement.

Etymology

The term "sacrococcygeal" is derived from the Latin words "sacrum" and "coccyx", referring to the two bones that the symphysis connects. "Symphysis" is derived from the Greek word "symphyō", meaning "I grow together".

Anatomy

The sacrococcygeal symphysis is a slightly movable joint that is formed between the sacrum and the coccyx. It is a type of cartilaginous joint, specifically a symphysis, which is characterized by the presence of a disc of fibrocartilage between the bones. This joint allows for slight movement, providing flexibility and shock absorption to the base of the spine.

Clinical significance

Injuries or conditions affecting the sacrococcygeal symphysis can cause coccydynia, or tailbone pain. This can result from trauma, childbirth, or degenerative joint diseases. Treatment options for coccydynia include pain management, physical therapy, and in severe cases, surgical removal of the coccyx (coccygectomy).

Related terms

• Symphysis: A type of joint where the bones are connected by fibrocartilage.
• Sacrum: The large, triangular bone at the base of the spine.
• Coccyx: The small, triangular bone at the very bottom of the spine, also known as the tailbone.
• Coccydynia: Pain in the coccyx or tailbone area, often brought on by sitting.

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Sacrococcygeal symphysis gallery

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  Gray's Anatomy illustration of the sacrococcygeal symphysis