Not yet confirmed as definitive. In an relatively recent interview she didn´t say it was official. I remember she had plenty of good wins like over Penetta, Kerber, Muller (when she was around top 50), Hercog, Paszek, Cravero (when in level), RoRo, Suarez Navarro, MDM. She started to play some WTA qualies, but after a close match with Cetkovska (i think in Indian Wells) and that Fed Cup quarterfinal, she started to lose with players like Sulpizio, so you can see how this injury affected her tennis.
Sadly, this is not strange for argies. Clarisa Fernandez, after reaching RG semis and defeating Dementieva, had a major injury on her knee i think and, despite some attempts of comeback, was never the same. Pitu Salerni, former junior champ, reached finally the top 70 in 2008, after a Bogota final, but soon retired because of another injury. Poly Suarez, despite winning two doubles titles in her final year, also had problems with injuries, when she was at the top of her game.