Pubis

Original Editor - lucinda hampton

Top Contributors - Lucinda hampton  

Introduction[edit | edit source]

Pubic anterior view.png

The pubis, together with the ilium and ischium, make up the innominate bone (hip bone) of the pelvis. These are individual bones in the young and unite to form one bone in adults, the principal union forming the fused acetabulum (forming one-fifth of the acetabulum).

  • It is covered by a layer of fat, which is covered by the mons pubis.
  • It provides structure and protection to the urogenital organs in both sexes, including the bladder, uterus, ovaries, prostate, and testes.[1]
  • It can be separated into a body, a superior ramus and an inferior ramus.s[2][3].

Articulations[edit | edit source]

Symphysis Pubis.png

The symphyseal surface of the pubis is elongate and oval, united by cartilage to its fellow at the pubic symphysis. The cartilaginous pubic symphysis has slight motion in its loose joining of the two halves of the pubic bone. However, the main purpose of this cartilage is also for stabilization.  [1]

Function[edit | edit source]

The main function of the pubis is to protect the intestines, bladder, and internal sex organs.

  • The pubis joins the rear bones of the pelvic girdle, holding them in place and allowing for a circular structure to join the upper half of the body with the lower half of the body.
  • The pubic bone also has several skeletal landmarks which allow for insertion of muscles, cartilage, ligaments, and tendons. Each of these structures allow for sound formation of joints, bones, and bodily structures[1].

Attachments[edit | edit source]

Musculotendinous

Piriformis, gemmeli, obturator, quadratus femoris.PNG

Lots of muscles that originate from pubis

Image: Piriformis, gemmeli, obturator, quadratus femoris

Muscles that insert on the pubis:

  • rectus abdominis muscle (lateral head) just lateral to pubic crest
  • pyramidalis muscle just below the attachment of rectus abdominis
  • levator ani muscle (levator prostatae and puborectalis)
  • conjoint tendon at the pecten pubis.

Ligamentous

  • pubofemoral ligament and obturator membrane at obturator crest
  • inguinal ligament (Poupart ligament) at pubic crest
  • ventral pubic ligament at medial aspect of anterior surface of body of pubis
  • puboprostatic ligament at the pelvic surface of body of pubis
  • lacunar ligament and pectineal ligament at the pecten pubis[2]

Conditions[edit | edit source]

As with any bone, the pubic bone can be fractured and must be immobilized to allow for proper and complete healing. See Pelvic Fractures

The pubis can also be affected by other conditions[1] eg

References[edit | edit source]

  1. 1.0 1.1 1.2 1.3 Very well health Pubis Available:https://www.verywellhealth.com/pubis-anatomy-4693390 (accessed 7.11.2021)
  2. 2.0 2.1 Radiopedia Pubis Available: https://radiopaedia.org/articles/pubis(accessed 7.11.2021)
  3. Kids kiddle Pubic Bone Available:https://kids.kiddle.co/Pubic_bone (accessed 7.11.2021)