Pubis

A key component of the pelvic bone structure, playing a crucial role in forming the hip joint and supporting the body.

The pubis is one of the three bones that make up the pelvis, specifically forming the anterior part of the pelvic girdle. It consists of a body and two rami (branches) that connect to the illium and ischium bones, encasing the pelvic cavity. The pubis also participates in the formation of the pubic symphysis, a cartilaginous joint that helps absorb shock during movement.

Terminologia Anatomica

os pubis

System

Skeletal system

Function

The primary role of the pubis is to provide structural support and stability to the pelvic region. It serves as an attachment point for muscles involved in running, walking, and various movements of the lower limbs. The pubis also plays a significant role in protecting vital organs within the pelvic cavity, including the bladder, reproductive organs, and part of the intestines. Furthermore, during childbirth, the pubic symphysis allows for slight movement to facilitate the passage of the baby through the birth canal, making it critical in reproductive health. The pubis is also involved in weight distribution during activities such as standing and walking, contributing to overall balance and coordination.

Location

Located in the lower part of the abdomen, the pubis is positioned at the front and the bottom of the pelvis. It is situated between the two ischium bones at the back and the ilium bones on each side. The pubic symphysis connects the left and right pubis bones, situated just above the genital area and below the abdomen. This placement allows the pubis to act as a sturdy platform from which the lower limb muscles can function effectively, while also connecting the skeletal structure of the upper body to that of the lower body and enabling efficient mobility.

Did You Know?

The human pelvis is unique among primates, providing a balance between bipedal locomotion and childbirth requirements.
Pubic bone morphology can differ significantly between males and females, with females usually having a wider pubic arch to accommodate childbirth.
In some animals, such as certain birds and reptiles, the pubis can serve different functions, adjusting according to their mode of locomotion.