27 appearances for Argentina National Football Team (2005-2014); scored 3 goals. Member of the Copa América 2007, and the Germany '06 and the Brazil '14 squads.
His father José Ramón Palacio is former soccer player.
Won the Argentine Primera División (2005 Apertura, 2006 Clausura, 2008 Apertura); Recopa Sudamericana (2005, 2006, 2008); Copa Sudamericana (2005); Copa Libertadores (2007) with Boca Juniors.
Has a daughter called Juana born on May 11, 2010.
Scored goals for Boca Juniors during the finals matches of the Copa Sudamericana (2005), Recopa Sudamericana (2006 and 2008), Copa Libertadores (2007) and FIFA Club World Cup (2007).
Was named in the South America Team of the Year in 2005 and 2006.
Top scorer of the Argentine Primera División (2006 Apertura).
Member of the Argentina National team who finished runners-up of the 2007 Copa América and the 2014 FIFA World Cup.
Won the Bronze Ball at the 2007 FIFA Club World Cup.
Won the Jorge Newbery Gold Award (by Government of the City of Buenos Aires) in 2008.