Home > Analysing the Body > Determining Sex

Determining Sex

Author: Jack Claridge - Updated: 28 April 2015 | commentsComment
 
Sex Skeleton Male Female Pathologist

Sometimes during the course of a criminal investigation and its subsequent autopsy the pathologist may find his or herself faced with the task of identifying the sex of a skeleton after decomposition.

Obviously before decomposition there are detailed differences between the form of a male or a female but once decomposition has taken a hold and carried out the unpleasant tasks that nature has intended, all that remains is the skeletal form with teeth and possibly some hair to work with.

Steps in Determination of Sex

Of course having teeth and hair does not always constitute enough material to make identification so the pathologist with perhaps the help of a forensic anthropologist will try to first of all work out what sex the skeleton was in life.

The determination of sex in skeletons is only possible once the male or female has reached adolescence or adulthood. Sexual dimorphism is slight in pre-adolescent children so this is a difficult task to perform if the skeleton is that of what might be a child.

A common way in which a pathologist and anthropologist might differentiate between male and female is quite simply bone size. This of course is not always accurate but for the most part male bones are larger in size to female bones and are so because of the addition muscle that may build up on the male body through adolescence and into adulthood.

The pelvis area is another good way of differentiating between the sexes. A female will have a larger sub-pubic angle to that of a man and this is obviously indicative of child bearing requirements in the female that are not required in the male of the species. This difference is noticeable across all species in nature where birth is from the womb. The male's sub-pubic area is less than ninety degrees whilst the female's is more.

The area around the pelvic inlet (in the middle of the pelvic bone) is larger in females than in men again with relevance to child bearing. The skeleton of a female who has given birth will be identifiable by the fact that this space will have widened upon the birth of a child and although it will contract it will not contract fully back to its original size.

Body Part Clues

The acetabulum - the socket in the pelvis, which is used to secure the head of the femur - is larger in males than in females.

Another area of the body in which the difference between males and females can be identified during the examination of a skeleton is the head and skull.There are several characteristics that are visible different in the male and female skull and they are:

  • The chin is squarer in the skull of a man than that of a woman, who will tend to have a slightly more pointed chin
  • The forehead of the male will slant backwards where again with a female it will be slightly more rounded
  • Males seem to have a brow ridges whereas females do not.
All in all there are plenty of differences between the male and female skeleton and if the pathologist and anthropologist have a complete skeleton to work from they should be able to make a positive determination as to the sex of the deceased before they died.

You might also like...
Leave a Comment, Ask for Advice or Share Your Story...
Can an autopsy show whether a woman has given birth more than once?
LSN80 - 25-Aug-14 @ 9:02 PM
say only a skull is found and its a very muscular female but they dont know that. is there a way to tell where the muscle meets the skull in the back of the head or is that only one of the ways to confirm it?also behind the jaw over the external ear is the extended zagamatic arc a male or female sign?
thatonechica - 5-Nov-13 @ 1:13 AM
yo der just look down there an if dey have stick they da boy if dey hav hole dey are de gurl yeeee
yoloswagcraay - 19-Mar-13 @ 2:23 PM
Leave a Comment, Ask for Advice or Share Your Story...
Title:
(never shown)
Firstname:
(never shown)
Surname:
(never shown)
Email:
(never shown)
Nickname:
(shown)
Comment:
Validate:
Enter word:
Our Quick Links
Latest Comments
  • chris
    Re: Drowning and Forensics
    My son was 9 six weeks ago he passed away in his sleep he was epileptic.His nose and mouth were all blue white and wrinkled and eyes were…
    23 May 2015
  • ExploreForensics
    Re: Forensic Toxicology
    @jodiesol22 - I am so sorry to hear of your loss. Toxicology reports are carried out in order to help determine the cause of death. You would…
    20 May 2015
  • DrO
    Re: The Rate of Decay in a Corpse
    @Carmen - The body would take longer decompose because a zinc-lined coffin is hermetically sealed. While it would slow down the…
    20 May 2015
  • wookie1
    Re: The Rate of Decay in a Corpse
    My husband died of a heart attack in our bed. I am a registered nurse, performed cpr, paramedics continued life support with…
    19 May 2015
  • rrrrrrrr
    Re: Forensic Cases: The Murder of Leanne Tiernan
    Just watched this case on forensic files. interesting case so I Googled it haha
    17 May 2015
  • jodiesol22
    Re: Forensic Toxicology
    my baby boy passed away after being born at just 12 weeks old why does their have to be a toxicology test done on him ? would this show the 6…
    16 May 2015
  • Carmen
    Re: The Rate of Decay in a Corpse
    Hi, my dad died 28 years ago in Morocco and was brought back on a plane in a zinc lined coffin. I was wondering how long would it…
    14 May 2015
  • Cecil
    Re: Forensic Cases: The M25 Rapist, Antoni Imiela
    I think that at the time the first attack was done to the 10 year old girl in November 2001, Iliema's DNA…
    14 May 2015
  • ExploreForensics
    Re: Blunt Force Trauma
    @Sandy - I'm afraid we can't advise on this and you would have to run this question by your GP.
    14 May 2015
  • confused
    Re: Determining Cause of Death
    My 13 year olds dad passed away 7-6-2015 when he was found he looked as if he just fell asleep and passed away he never moved.. He…
    14 May 2015
Further Reading...
Our Most Popular...
Add to my Yahoo!
Add to Google
Stumble this
Add to Twitter
Add To Facebook
RSS feed
You should seek independent professional advice before acting upon any information on the ExploreForensics website. Please read our Disclaimer.