Pubic symphysis

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Pubic symphysis

Symphysis pubis exposed by a coronal section. (Pubic symphysis visible at center left.)

Sagittal section through the pelvis of a newly born male child. (Symphysis pubis labeled at center right.)
Latin	symphysis pubica, symphysis pubis
Gray's	subject #80 310
Dorlands/Elsevier	s_31/12776084

The pubic symphysis is the midline cartilaginous joint uniting the superior rami of the left and right pubic bones (pubis).

It is located anterior to the urinary bladder and superior to the external genitalia; for females it is above the vulva and for males it is above the penis. In males, the suspensory ligament of the penis attaches to the pubic symphysis. In females, the pubic symphysis is intimately close to the clitoris.

During pregnancy in the human, hormones such as relaxin soften this cartilage allowing the pelvic bones to be more flexible for delivery. The symphysis pubis may actually separate during the birthing process in some women: this is painful but rare, with reported rates of occurrence ranging from one in 600 to one in 3400 births.

1 Use in forensic anthropology
2 Additional images
3 See also
4 External links

[edit] Use in forensic anthropology

The pubic symphysis have importance in the field of forensic anthropology, as they can be used to estimate the age of adult skeletons. Throughout life, the surfaces of the pubic symphysis are worn at a more or less predictable rate. By examining the wear of the pubic symphysis, it is possible to estimate the age of the person at death.

Historically, when labor failed to progress because of the head of the fetus was too large the mother's symphysis pubis was cut and the fetus' skull was crushed. The Caesarean section has allowed for the, largely, safe delivery of these infants (see Hope Langer, MD; NY Times Review of Books, Oct. 22, 2006)

[edit] Additional images

Organs of the female reproductive system.	Right hip bone. Internal surface.	Plan of ossification of the hip bone.	Male pelvic organs seen from right side.
Vertical section of bladder, penis, and urethra.	Median sagittal section of male pelvis.	Median sagittal section of female pelvis.