Fibrocartilage of the pubic symphysis

The fibrocartilage of the pubic symphysis serves as a resilient cushioning structure between the pelvic bones.

Fibrocartilage is a tough and fibrous type of cartilage that is composed of densely packed collagen fibers. In the context of the pubic symphysis, it forms a sturdy interpubic disc that connects the left and right pubic bones, providing both support and flexibility to the pelvis.

Terminologia Anatomica

symphysis-pubis

System

Skeletal system

Function

The primary function of the fibrocartilage in the pubic symphysis is to allow for slight movement between the two pubic bones while maintaining stability. This characteristic is crucial during activities such as walking, running, and especially during childbirth, as it accommodates the changing dimensions of the pelvis while providing shock absorption. The resilience of the fibrocartilage helps to absorb impact, protecting the underlying bony structures. Additionally, its tough structure contributes to the overall integrity of the pelvic girdle, which supports the weight of the upper body and assists in the transmission of forces between the lower limbs and the spine.

Location

The pubic symphysis is located anteriorly (front) at the junction of the two pubic bones. Specifically, it is situated in the midline of the body at the lower part of the abdominal wall, just above the external genitalia. The fibrocartilage disc lies between the left and right pubic bones, creating a joint that is classified as a symphysis joint. This joint is surrounded by a fibrous capsule and provides a small degree of mobility, facilitating the underlying functions associated with the pelvic region and its role in locomotion.

Did You Know?

The fibrocartilage of the pubic symphysis can expand during pregnancy, allowing for easier passage of the baby during childbirth.
This type of cartilage has a higher density of collagen fibers compared to other forms of cartilage, which provides it with superior tensile strength.
In some cases, injuries to the pubic symphysis can occur during high-impact sports, resulting in pain and requiring proper medical intervention.
The term 'symphysis' originates from Greek, meaning 'growing together', emphasizing the fusion of the two pubic bones as a single structure.