Hegar's sign

Hegar's sign is a non-sensitive indication of pregnancy in women—its absence does not exclude pregnancy. It pertains to the features of the cervix and the uterine isthmus. It is demonstrated as a softening in the consistency of the uterus, and the uterus and cervix seem to be two separate regions.{{cite book|author1=Chong|author2=W.M.|title=Cardiology A Socratic Approach|url=https://books.google.com/books?id=Iipd0GIpw4cC&pg=PA36|date=1 January 2001|publisher=Orient Blackswan|isbn=978-81-250-1887-2|pages=36–}}

The sign is usually present from 4–6 weeks{{cite book|last=Cunningham|first=Gary|title=Williams obstetrics: Chapter 8, Prenatal Care|year=2010|publisher=McGraw-Hill Medical|location=New York|isbn=978-0071497015|url=http://www.accessmedicine.com/content.aspx?aID=6052072|edition=23rd}} until the 12th week of pregnancy. Hegar's sign is more difficult to recognize in multiparous women.

Interpretation: On bimanual examination (two fingers in the anterior fornix and two fingers below the uterus per abdomen), the abdominal and vaginal fingers seem to oppose below the body of uterus (examination must be gentle to avoid abortion).{{cite book|title=D.C.DUTTA'S Textbook of Obstetrics|publisher=New central book Agency Ltd|author=D.C.Dutta|location=India|page=65|year=2013}}

This sign was repeatedly demonstrated and described by Ernst Ludwig Alfred Hegar, a German gynecologist, in 1895. Hegar credited Reinl, one of his assistants, who originally described this sign in 1884.{{cite book|title=Notable names in Medicine & Surgery|publisher=H. K. Lewis & Co. Ltd.|author=Hamilton Bailey, W. J. Bishop|author2-link=William John Bishop|name-list-style=amp|location=London|page=101|year=1944}}