Emane first gained attention at the 2005 World Judo Championships in Cairo, Egypt where she won the silver medal in the women's 70 kg class. Next year, Emane won her first European title at the 2006 European Judo Championships in Tampere after an ippon in the final, against the German Heide Wollert.
Emane became the world champion for the first time at the 2007 World Judo Championships in Rio de Janeiro by defeating Ronda Rousey of United States by points in the final match. After moving down in weight to the 63 kg class in 2009, Emane claimed her second World Championship title at the 2011 World Judo Championships in Paris, where she beat two-time world champion Yoshie Ueno of Japan by unanimous decision in the final.
At the 2012 Summer Olympics, she won the bronze medal.